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/*
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** 2003 April 6
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**
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** The author disclaims copyright to this source code. In place of
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** a legal notice, here is a blessing:
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**
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** May you do good and not evil.
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** May you find forgiveness for yourself and forgive others.
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** May you share freely, never taking more than you give.
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**
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*************************************************************************
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** This file contains code used to implement the PRAGMA command.
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**
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** $Id: pragma.cpp 1282 2008-11-13 09:31:33Z LarsPson $
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*/
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#include "sqliteInt.h"
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#include <ctype.h>
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/* Ignore this whole file if pragmas are disabled
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*/
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#if !defined(SQLITE_OMIT_PRAGMA) && !defined(SQLITE_OMIT_PARSER)
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/*
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** Interpret the given string as a safety level. Return 0 for OFF,
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** 1 for ON or NORMAL and 2 for FULL. Return 1 for an empty or
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** unrecognized string argument.
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**
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** Note that the values returned are one less that the values that
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** should be passed into sqlite3BtreeSetSafetyLevel(). The is done
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** to support legacy SQL code. The safety level used to be boolean
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** and older scripts may have used numbers 0 for OFF and 1 for ON.
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*/
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static int getSafetyLevel(const char *z){
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/* 123456789 123456789 */
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static const char zText[] = "onoffalseyestruefull";
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static const u8 iOffset[] = {0, 1, 2, 4, 9, 12, 16};
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static const u8 iLength[] = {2, 2, 3, 5, 3, 4, 4};
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static const u8 iValue[] = {1, 0, 0, 0, 1, 1, 2};
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int i, n;
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if( isdigit(*z) ){
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return atoi(z);
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}
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n = strlen(z);
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for(i=0; i<sizeof(iLength); i++){
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if( iLength[i]==n && sqlite3StrNICmp(&zText[iOffset[i]],z,n)==0 ){
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return iValue[i];
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}
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}
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return 1;
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}
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/*
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** Interpret the given string as a boolean value.
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*/
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static int getBoolean(const char *z){
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return getSafetyLevel(z)&1;
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}
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/*
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** Interpret the given string as a locking mode value.
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*/
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static int getLockingMode(const char *z){
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if( z ){
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if( 0==sqlite3StrICmp(z, "exclusive") ) return PAGER_LOCKINGMODE_EXCLUSIVE;
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if( 0==sqlite3StrICmp(z, "normal") ) return PAGER_LOCKINGMODE_NORMAL;
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}
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return PAGER_LOCKINGMODE_QUERY;
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}
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#ifndef SQLITE_OMIT_AUTOVACUUM
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/*
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** Interpret the given string as an auto-vacuum mode value.
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**
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** The following strings, "none", "full" and "incremental" are
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** acceptable, as are their numeric equivalents: 0, 1 and 2 respectively.
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*/
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static int getAutoVacuum(const char *z){
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int i;
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if( 0==sqlite3StrICmp(z, "none") ) return BTREE_AUTOVACUUM_NONE;
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if( 0==sqlite3StrICmp(z, "full") ) return BTREE_AUTOVACUUM_FULL;
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if( 0==sqlite3StrICmp(z, "incremental") ) return BTREE_AUTOVACUUM_INCR;
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i = atoi(z);
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return ((i>=0&&i<=2)?i:0);
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}
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#endif /* ifndef SQLITE_OMIT_AUTOVACUUM */
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#ifndef SQLITE_OMIT_PAGER_PRAGMAS
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/*
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** Interpret the given string as a temp db location. Return 1 for file
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** backed temporary databases, 2 for the Red-Black tree in memory database
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** and 0 to use the compile-time default.
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*/
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static int getTempStore(const char *z){
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if( z[0]>='0' && z[0]<='2' ){
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return z[0] - '0';
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}else if( sqlite3StrICmp(z, "file")==0 ){
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return 1;
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}else if( sqlite3StrICmp(z, "memory")==0 ){
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return 2;
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}else{
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return 0;
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}
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}
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#endif /* SQLITE_PAGER_PRAGMAS */
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#ifndef SQLITE_OMIT_PAGER_PRAGMAS
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/*
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** Invalidate temp storage, either when the temp storage is changed
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** from default, or when 'file' and the temp_store_directory has changed
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*/
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static int invalidateTempStorage(Parse *pParse){
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sqlite3 *db = pParse->db;
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if( db->aDb[1].pBt!=0 ){
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if( !db->autoCommit ){
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sqlite3ErrorMsg(pParse, "temporary storage cannot be changed "
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"from within a transaction");
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return SQLITE_ERROR;
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}
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sqlite3BtreeClose(db->aDb[1].pBt);
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db->aDb[1].pBt = 0;
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sqlite3ResetInternalSchema(db, 0);
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}
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return SQLITE_OK;
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}
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#endif /* SQLITE_PAGER_PRAGMAS */
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#ifndef SQLITE_OMIT_PAGER_PRAGMAS
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/*
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** If the TEMP database is open, close it and mark the database schema
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** as needing reloading. This must be done when using the TEMP_STORE
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** or DEFAULT_TEMP_STORE pragmas.
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*/
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static int changeTempStorage(Parse *pParse, const char *zStorageType){
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int ts = getTempStore(zStorageType);
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sqlite3 *db = pParse->db;
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if( db->temp_store==ts ) return SQLITE_OK;
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if( invalidateTempStorage( pParse ) != SQLITE_OK ){
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return SQLITE_ERROR;
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}
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db->temp_store = ts;
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return SQLITE_OK;
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}
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#endif /* SQLITE_PAGER_PRAGMAS */
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/*
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** Generate code to return a single integer value.
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*/
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static void returnSingleInt(Parse *pParse, const char *zLabel, int value){
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Vdbe *v = sqlite3GetVdbe(pParse);
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sqlite3VdbeAddOp(v, OP_Integer, value, 0);
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if( pParse->explain==0 ){
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sqlite3VdbeSetNumCols(v, 1);
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sqlite3VdbeSetColName(v, 0, COLNAME_NAME, zLabel, P3_STATIC);
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}
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sqlite3VdbeAddOp(v, OP_Callback, 1, 0);
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}
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#ifndef SQLITE_OMIT_FLAG_PRAGMAS
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/*
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** Check to see if zRight and zLeft refer to a pragma that queries
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** or changes one of the flags in db->flags. Return 1 if so and 0 if not.
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** Also, implement the pragma.
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*/
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static int flagPragma(Parse *pParse, const char *zLeft, const char *zRight){
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static const struct sPragmaType {
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const char *zName; /* Name of the pragma */
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int mask; /* Mask for the db->flags value */
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} aPragma[] = {
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{ "full_column_names", SQLITE_FullColNames },
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{ "short_column_names", SQLITE_ShortColNames },
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{ "count_changes", SQLITE_CountRows },
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{ "empty_result_callbacks", SQLITE_NullCallback },
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{ "legacy_file_format", SQLITE_LegacyFileFmt },
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{ "fullfsync", SQLITE_FullFSync },
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#ifdef SQLITE_DEBUG
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{ "sql_trace", SQLITE_SqlTrace },
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{ "vdbe_listing", SQLITE_VdbeListing },
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{ "vdbe_trace", SQLITE_VdbeTrace },
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#endif
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#ifndef SQLITE_OMIT_CHECK
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{ "ignore_check_constraints", SQLITE_IgnoreChecks },
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#endif
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/* The following is VERY experimental */
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{ "writable_schema", SQLITE_WriteSchema|SQLITE_RecoveryMode },
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{ "omit_readlock", SQLITE_NoReadlock },
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/* TODO: Maybe it shouldn't be possible to change the ReadUncommitted
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** flag if there are any active statements. */
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{ "read_uncommitted", SQLITE_ReadUncommitted },
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};
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int i;
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const struct sPragmaType *p;
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for(i=0, p=aPragma; i<sizeof(aPragma)/sizeof(aPragma[0]); i++, p++){
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if( sqlite3StrICmp(zLeft, p->zName)==0 ){
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sqlite3 *db = pParse->db;
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Vdbe *v;
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v = sqlite3GetVdbe(pParse);
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if( v ){
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if( zRight==0 ){
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returnSingleInt(pParse, p->zName, (db->flags & p->mask)!=0 );
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}else{
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if( getBoolean(zRight) ){
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db->flags |= p->mask;
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}else{
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db->flags &= ~p->mask;
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}
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/* Many of the flag-pragmas modify the code generated by the SQL
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** compiler (eg. count_changes). So add an opcode to expire all
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** compiled SQL statements after modifying a pragma value.
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*/
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sqlite3VdbeAddOp(v, OP_Expire, 0, 0);
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}
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}
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return 1;
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}
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}
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return 0;
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}
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#endif /* SQLITE_OMIT_FLAG_PRAGMAS */
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222 |
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/*
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** Process a pragma statement.
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**
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** Pragmas are of this form:
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**
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** PRAGMA [database.]id [= value]
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**
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** The identifier might also be a string. The value is a string, and
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** identifier, or a number. If minusFlag is true, then the value is
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** a number that was preceded by a minus sign.
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**
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** If the left side is "database.id" then pId1 is the database name
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** and pId2 is the id. If the left side is just "id" then pId1 is the
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** id and pId2 is any empty string.
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*/
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238 |
void sqlite3Pragma(
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Parse *pParse,
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Token *pId1, /* First part of [database.]id field */
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Token *pId2, /* Second part of [database.]id field, or NULL */
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Token *pValue, /* Token for <value>, or NULL */
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int minusFlag /* True if a '-' sign preceded <value> */
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){
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char *zLeft = 0; /* Nul-terminated UTF-8 string <id> */
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char *zRight = 0; /* Nul-terminated UTF-8 string <value>, or NULL */
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const char *zDb = 0; /* The database name */
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248 |
Token *pId; /* Pointer to <id> token */
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249 |
int iDb; /* Database index for <database> */
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sqlite3 *db = pParse->db;
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Db *pDb;
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252 |
Vdbe *v = sqlite3GetVdbe(pParse);
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if( v==0 ) return;
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254 |
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/* Interpret the [database.] part of the pragma statement. iDb is the
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** index of the database this pragma is being applied to in db.aDb[]. */
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iDb = sqlite3TwoPartName(pParse, pId1, pId2, &pId);
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258 |
if( iDb<0 ) return;
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259 |
pDb = &db->aDb[iDb];
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260 |
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261 |
/* If the temp database has been explicitly named as part of the
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262 |
** pragma, make sure it is open.
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263 |
*/
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264 |
if( iDb==1 && sqlite3OpenTempDatabase(pParse) ){
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265 |
return;
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266 |
}
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267 |
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268 |
zLeft = sqlite3NameFromToken(db, pId);
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269 |
if( !zLeft ) return;
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270 |
if( minusFlag ){
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271 |
zRight = sqlite3MPrintf(db, "-%T", pValue);
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272 |
}else{
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273 |
zRight = sqlite3NameFromToken(db, pValue);
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274 |
}
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275 |
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276 |
zDb = ((iDb>0)?pDb->zName:0);
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277 |
if( sqlite3AuthCheck(pParse, SQLITE_PRAGMA, zLeft, zRight, zDb) ){
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278 |
goto pragma_out;
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279 |
}
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280 |
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281 |
#ifndef SQLITE_OMIT_PAGER_PRAGMAS
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282 |
/*
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283 |
** PRAGMA [database.]default_cache_size
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284 |
** PRAGMA [database.]default_cache_size=N
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285 |
**
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286 |
** The first form reports the current persistent setting for the
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287 |
** page cache size. The value returned is the maximum number of
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288 |
** pages in the page cache. The second form sets both the current
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289 |
** page cache size value and the persistent page cache size value
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290 |
** stored in the database file.
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291 |
**
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292 |
** The default cache size is stored in meta-value 2 of page 1 of the
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293 |
** database file. The cache size is actually the absolute value of
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294 |
** this memory location. The sign of meta-value 2 determines the
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295 |
** synchronous setting. A negative value means synchronous is off
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296 |
** and a positive value means synchronous is on.
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|
297 |
*/
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|
298 |
if( sqlite3StrICmp(zLeft,"default_cache_size")==0 ){
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299 |
static const VdbeOpList getCacheSize[] = {
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300 |
{ OP_ReadCookie, 0, 2, 0}, /* 0 */
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301 |
{ OP_AbsValue, 0, 0, 0},
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302 |
{ OP_Dup, 0, 0, 0},
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303 |
{ OP_Integer, 0, 0, 0},
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304 |
{ OP_Ne, 0, 6, 0},
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305 |
{ OP_Integer, 0, 0, 0}, /* 5 */
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306 |
{ OP_Callback, 1, 0, 0},
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307 |
};
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308 |
int addr;
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309 |
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
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310 |
sqlite3VdbeUsesBtree(v, iDb);
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311 |
if( !zRight ){
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312 |
sqlite3VdbeSetNumCols(v, 1);
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313 |
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "cache_size", P3_STATIC);
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314 |
addr = sqlite3VdbeAddOpList(v, ArraySize(getCacheSize), getCacheSize);
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315 |
sqlite3VdbeChangeP1(v, addr, iDb);
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316 |
sqlite3VdbeChangeP1(v, addr+5, SQLITE_DEFAULT_CACHE_SIZE);
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317 |
}else{
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318 |
int size = atoi(zRight);
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319 |
if( size<0 ) size = -size;
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320 |
sqlite3BeginWriteOperation(pParse, 0, iDb);
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321 |
sqlite3VdbeAddOp(v, OP_Integer, size, 0);
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322 |
sqlite3VdbeAddOp(v, OP_ReadCookie, iDb, 2);
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323 |
addr = sqlite3VdbeAddOp(v, OP_Integer, 0, 0);
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324 |
sqlite3VdbeAddOp(v, OP_Ge, 0, addr+3);
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325 |
sqlite3VdbeAddOp(v, OP_Negative, 0, 0);
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326 |
sqlite3VdbeAddOp(v, OP_SetCookie, iDb, 2);
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327 |
pDb->pSchema->cache_size = size;
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328 |
sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size);
|
|
|
329 |
}
|
|
|
330 |
}else
|
|
|
331 |
|
|
|
332 |
/*
|
|
|
333 |
** PRAGMA [database.]page_size
|
|
|
334 |
** PRAGMA [database.]page_size=N
|
|
|
335 |
**
|
|
|
336 |
** The first form reports the current setting for the
|
|
|
337 |
** database page size in bytes. The second form sets the
|
|
|
338 |
** database page size value. The value can only be set if
|
|
|
339 |
** the database has not yet been created.
|
|
|
340 |
*/
|
|
|
341 |
if( sqlite3StrICmp(zLeft,"page_size")==0 ){
|
|
|
342 |
Btree *pBt = pDb->pBt;
|
|
|
343 |
if( !zRight ){
|
|
|
344 |
int size = pBt ? sqlite3BtreeGetPageSize(pBt) : 0;
|
|
|
345 |
returnSingleInt(pParse, "page_size", size);
|
|
|
346 |
}else{
|
|
|
347 |
/* Malloc may fail when setting the page-size, as there is an internal
|
|
|
348 |
** buffer that the pager module resizes using sqlite3_realloc().
|
|
|
349 |
*/
|
|
|
350 |
if( SQLITE_NOMEM==sqlite3BtreeSetPageSize(pBt, atoi(zRight), -1) ){
|
|
|
351 |
db->mallocFailed = 1;
|
|
|
352 |
}
|
|
|
353 |
}
|
|
|
354 |
}else
|
|
|
355 |
|
|
|
356 |
/*
|
|
|
357 |
** PRAGMA [database.]max_page_count
|
|
|
358 |
** PRAGMA [database.]max_page_count=N
|
|
|
359 |
**
|
|
|
360 |
** The first form reports the current setting for the
|
|
|
361 |
** maximum number of pages in the database file. The
|
|
|
362 |
** second form attempts to change this setting. Both
|
|
|
363 |
** forms return the current setting.
|
|
|
364 |
*/
|
|
|
365 |
if( sqlite3StrICmp(zLeft,"max_page_count")==0 ){
|
|
|
366 |
Btree *pBt = pDb->pBt;
|
|
|
367 |
int newMax = 0;
|
|
|
368 |
if( zRight ){
|
|
|
369 |
newMax = atoi(zRight);
|
|
|
370 |
}
|
|
|
371 |
if( pBt ){
|
|
|
372 |
newMax = sqlite3BtreeMaxPageCount(pBt, newMax);
|
|
|
373 |
}
|
|
|
374 |
returnSingleInt(pParse, "max_page_count", newMax);
|
|
|
375 |
}else
|
|
|
376 |
|
|
|
377 |
/*
|
|
|
378 |
** PRAGMA [database.]locking_mode
|
|
|
379 |
** PRAGMA [database.]locking_mode = (normal|exclusive)
|
|
|
380 |
*/
|
|
|
381 |
if( sqlite3StrICmp(zLeft,"locking_mode")==0 ){
|
|
|
382 |
const char *zRet = "normal";
|
|
|
383 |
int eMode = getLockingMode(zRight);
|
|
|
384 |
|
|
|
385 |
if( pId2->n==0 && eMode==PAGER_LOCKINGMODE_QUERY ){
|
|
|
386 |
/* Simple "PRAGMA locking_mode;" statement. This is a query for
|
|
|
387 |
** the current default locking mode (which may be different to
|
|
|
388 |
** the locking-mode of the main database).
|
|
|
389 |
*/
|
|
|
390 |
eMode = db->dfltLockMode;
|
|
|
391 |
}else{
|
|
|
392 |
Pager *pPager;
|
|
|
393 |
if( pId2->n==0 ){
|
|
|
394 |
/* This indicates that no database name was specified as part
|
|
|
395 |
** of the PRAGMA command. In this case the locking-mode must be
|
|
|
396 |
** set on all attached databases, as well as the main db file.
|
|
|
397 |
**
|
|
|
398 |
** Also, the sqlite3.dfltLockMode variable is set so that
|
|
|
399 |
** any subsequently attached databases also use the specified
|
|
|
400 |
** locking mode.
|
|
|
401 |
*/
|
|
|
402 |
int ii;
|
|
|
403 |
assert(pDb==&db->aDb[0]);
|
|
|
404 |
for(ii=2; ii<db->nDb; ii++){
|
|
|
405 |
pPager = sqlite3BtreePager(db->aDb[ii].pBt);
|
|
|
406 |
sqlite3PagerLockingMode(pPager, eMode);
|
|
|
407 |
}
|
|
|
408 |
db->dfltLockMode = eMode;
|
|
|
409 |
}
|
|
|
410 |
pPager = sqlite3BtreePager(pDb->pBt);
|
|
|
411 |
eMode = sqlite3PagerLockingMode(pPager, eMode);
|
|
|
412 |
}
|
|
|
413 |
|
|
|
414 |
assert(eMode==PAGER_LOCKINGMODE_NORMAL||eMode==PAGER_LOCKINGMODE_EXCLUSIVE);
|
|
|
415 |
if( eMode==PAGER_LOCKINGMODE_EXCLUSIVE ){
|
|
|
416 |
zRet = "exclusive";
|
|
|
417 |
}
|
|
|
418 |
sqlite3VdbeSetNumCols(v, 1);
|
|
|
419 |
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "locking_mode", P3_STATIC);
|
|
|
420 |
sqlite3VdbeOp3(v, OP_String8, 0, 0, zRet, 0);
|
|
|
421 |
sqlite3VdbeAddOp(v, OP_Callback, 1, 0);
|
|
|
422 |
}else
|
|
|
423 |
#endif /* SQLITE_OMIT_PAGER_PRAGMAS */
|
|
|
424 |
|
|
|
425 |
/*
|
|
|
426 |
** PRAGMA [database.]auto_vacuum
|
|
|
427 |
** PRAGMA [database.]auto_vacuum=N
|
|
|
428 |
**
|
|
|
429 |
** Get or set the (boolean) value of the database 'auto-vacuum' parameter.
|
|
|
430 |
*/
|
|
|
431 |
#ifndef SQLITE_OMIT_AUTOVACUUM
|
|
|
432 |
if( sqlite3StrICmp(zLeft,"auto_vacuum")==0 ){
|
|
|
433 |
Btree *pBt = pDb->pBt;
|
|
|
434 |
if( sqlite3ReadSchema(pParse) ){
|
|
|
435 |
goto pragma_out;
|
|
|
436 |
}
|
|
|
437 |
if( !zRight ){
|
|
|
438 |
int auto_vacuum =
|
|
|
439 |
pBt ? sqlite3BtreeGetAutoVacuum(pBt) : SQLITE_DEFAULT_AUTOVACUUM;
|
|
|
440 |
returnSingleInt(pParse, "auto_vacuum", auto_vacuum);
|
|
|
441 |
}else{
|
|
|
442 |
int eAuto = getAutoVacuum(zRight);
|
|
|
443 |
db->nextAutovac = eAuto;
|
|
|
444 |
if( eAuto>=0 ){
|
|
|
445 |
/* Call SetAutoVacuum() to set initialize the internal auto and
|
|
|
446 |
** incr-vacuum flags. This is required in case this connection
|
|
|
447 |
** creates the database file. It is important that it is created
|
|
|
448 |
** as an auto-vacuum capable db.
|
|
|
449 |
*/
|
|
|
450 |
int rc = sqlite3BtreeSetAutoVacuum(pBt, eAuto);
|
|
|
451 |
if( rc==SQLITE_OK && (eAuto==1 || eAuto==2) ){
|
|
|
452 |
/* When setting the auto_vacuum mode to either "full" or
|
|
|
453 |
** "incremental", write the value of meta[6] in the database
|
|
|
454 |
** file. Before writing to meta[6], check that meta[3] indicates
|
|
|
455 |
** that this really is an auto-vacuum capable database.
|
|
|
456 |
*/
|
|
|
457 |
static const VdbeOpList setMeta6[] = {
|
|
|
458 |
{ OP_Transaction, 0, 1, 0}, /* 0 */
|
|
|
459 |
{ OP_ReadCookie, 0, 3, 0}, /* 1 */
|
|
|
460 |
{ OP_If, 0, 0, 0}, /* 2 */
|
|
|
461 |
{ OP_Halt, SQLITE_OK, OE_Abort, 0}, /* 3 */
|
|
|
462 |
{ OP_Integer, 0, 0, 0}, /* 4 */
|
|
|
463 |
{ OP_SetCookie, 0, 6, 0}, /* 5 */
|
|
|
464 |
};
|
|
|
465 |
int iAddr;
|
|
|
466 |
iAddr = sqlite3VdbeAddOpList(v, ArraySize(setMeta6), setMeta6);
|
|
|
467 |
sqlite3VdbeChangeP1(v, iAddr, iDb);
|
|
|
468 |
sqlite3VdbeChangeP1(v, iAddr+1, iDb);
|
|
|
469 |
sqlite3VdbeChangeP2(v, iAddr+2, iAddr+4);
|
|
|
470 |
sqlite3VdbeChangeP1(v, iAddr+4, eAuto-1);
|
|
|
471 |
sqlite3VdbeChangeP1(v, iAddr+5, iDb);
|
|
|
472 |
sqlite3VdbeUsesBtree(v, iDb);
|
|
|
473 |
}
|
|
|
474 |
}
|
|
|
475 |
}
|
|
|
476 |
}else
|
|
|
477 |
#endif
|
|
|
478 |
|
|
|
479 |
/*
|
|
|
480 |
** PRAGMA [database.]incremental_vacuum(N)
|
|
|
481 |
**
|
|
|
482 |
** Do N steps of incremental vacuuming on a database.
|
|
|
483 |
*/
|
|
|
484 |
#ifndef SQLITE_OMIT_AUTOVACUUM
|
|
|
485 |
if( sqlite3StrICmp(zLeft,"incremental_vacuum")==0 ){
|
|
|
486 |
int iLimit, addr;
|
|
|
487 |
if( sqlite3ReadSchema(pParse) ){
|
|
|
488 |
goto pragma_out;
|
|
|
489 |
}
|
|
|
490 |
if( zRight==0 || !sqlite3GetInt32(zRight, &iLimit) || iLimit<=0 ){
|
|
|
491 |
iLimit = 0x7fffffff;
|
|
|
492 |
}
|
|
|
493 |
sqlite3BeginWriteOperation(pParse, 0, iDb);
|
|
|
494 |
sqlite3VdbeAddOp(v, OP_MemInt, iLimit, 0);
|
|
|
495 |
addr = sqlite3VdbeAddOp(v, OP_IncrVacuum, iDb, 0);
|
|
|
496 |
sqlite3VdbeAddOp(v, OP_Callback, 0, 0);
|
|
|
497 |
sqlite3VdbeAddOp(v, OP_MemIncr, -1, 0);
|
|
|
498 |
sqlite3VdbeAddOp(v, OP_IfMemPos, 0, addr);
|
|
|
499 |
sqlite3VdbeJumpHere(v, addr);
|
|
|
500 |
}else
|
|
|
501 |
#endif
|
|
|
502 |
|
|
|
503 |
#ifndef SQLITE_OMIT_PAGER_PRAGMAS
|
|
|
504 |
/*
|
|
|
505 |
** PRAGMA [database.]cache_size
|
|
|
506 |
** PRAGMA [database.]cache_size=N
|
|
|
507 |
**
|
|
|
508 |
** The first form reports the current local setting for the
|
|
|
509 |
** page cache size. The local setting can be different from
|
|
|
510 |
** the persistent cache size value that is stored in the database
|
|
|
511 |
** file itself. The value returned is the maximum number of
|
|
|
512 |
** pages in the page cache. The second form sets the local
|
|
|
513 |
** page cache size value. It does not change the persistent
|
|
|
514 |
** cache size stored on the disk so the cache size will revert
|
|
|
515 |
** to its default value when the database is closed and reopened.
|
|
|
516 |
** N should be a positive integer.
|
|
|
517 |
*/
|
|
|
518 |
if( sqlite3StrICmp(zLeft,"cache_size")==0 ){
|
|
|
519 |
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
|
|
|
520 |
if( !zRight ){
|
|
|
521 |
returnSingleInt(pParse, "cache_size", pDb->pSchema->cache_size);
|
|
|
522 |
}else{
|
|
|
523 |
int size = atoi(zRight);
|
|
|
524 |
if( size<0 ) size = -size;
|
|
|
525 |
pDb->pSchema->cache_size = size;
|
|
|
526 |
sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size);
|
|
|
527 |
}
|
|
|
528 |
}else
|
|
|
529 |
|
|
|
530 |
/*
|
|
|
531 |
** PRAGMA temp_store
|
|
|
532 |
** PRAGMA temp_store = "default"|"memory"|"file"
|
|
|
533 |
**
|
|
|
534 |
** Return or set the local value of the temp_store flag. Changing
|
|
|
535 |
** the local value does not make changes to the disk file and the default
|
|
|
536 |
** value will be restored the next time the database is opened.
|
|
|
537 |
**
|
|
|
538 |
** Note that it is possible for the library compile-time options to
|
|
|
539 |
** override this setting
|
|
|
540 |
*/
|
|
|
541 |
if( sqlite3StrICmp(zLeft, "temp_store")==0 ){
|
|
|
542 |
if( !zRight ){
|
|
|
543 |
returnSingleInt(pParse, "temp_store", db->temp_store);
|
|
|
544 |
}else{
|
|
|
545 |
changeTempStorage(pParse, zRight);
|
|
|
546 |
}
|
|
|
547 |
}else
|
|
|
548 |
|
|
|
549 |
/*
|
|
|
550 |
** PRAGMA temp_store_directory
|
|
|
551 |
** PRAGMA temp_store_directory = ""|"directory_name"
|
|
|
552 |
**
|
|
|
553 |
** Return or set the local value of the temp_store_directory flag. Changing
|
|
|
554 |
** the value sets a specific directory to be used for temporary files.
|
|
|
555 |
** Setting to a null string reverts to the default temporary directory search.
|
|
|
556 |
** If temporary directory is changed, then invalidateTempStorage.
|
|
|
557 |
**
|
|
|
558 |
*/
|
|
|
559 |
if( sqlite3StrICmp(zLeft, "temp_store_directory")==0 ){
|
|
|
560 |
if( !zRight ){
|
|
|
561 |
if( sqlite3_temp_directory ){
|
|
|
562 |
sqlite3VdbeSetNumCols(v, 1);
|
|
|
563 |
sqlite3VdbeSetColName(v, 0, COLNAME_NAME,
|
|
|
564 |
"temp_store_directory", P3_STATIC);
|
|
|
565 |
sqlite3VdbeOp3(v, OP_String8, 0, 0, sqlite3_temp_directory, 0);
|
|
|
566 |
sqlite3VdbeAddOp(v, OP_Callback, 1, 0);
|
|
|
567 |
}
|
|
|
568 |
}else{
|
|
|
569 |
if( zRight[0]
|
|
|
570 |
&& !sqlite3OsAccess(db->pVfs, zRight, SQLITE_ACCESS_READWRITE)
|
|
|
571 |
){
|
|
|
572 |
sqlite3ErrorMsg(pParse, "not a writable directory");
|
|
|
573 |
goto pragma_out;
|
|
|
574 |
}
|
|
|
575 |
if( TEMP_STORE==0
|
|
|
576 |
|| (TEMP_STORE==1 && db->temp_store<=1)
|
|
|
577 |
|| (TEMP_STORE==2 && db->temp_store==1)
|
|
|
578 |
){
|
|
|
579 |
invalidateTempStorage(pParse);
|
|
|
580 |
}
|
|
|
581 |
sqlite3_free(sqlite3_temp_directory);
|
|
|
582 |
if( zRight[0] ){
|
|
|
583 |
sqlite3_temp_directory = zRight;
|
|
|
584 |
zRight = 0;
|
|
|
585 |
}else{
|
|
|
586 |
sqlite3_temp_directory = 0;
|
|
|
587 |
}
|
|
|
588 |
}
|
|
|
589 |
}else
|
|
|
590 |
|
|
|
591 |
/*
|
|
|
592 |
** PRAGMA [database.]synchronous
|
|
|
593 |
** PRAGMA [database.]synchronous=OFF|ON|NORMAL|FULL
|
|
|
594 |
**
|
|
|
595 |
** Return or set the local value of the synchronous flag. Changing
|
|
|
596 |
** the local value does not make changes to the disk file and the
|
|
|
597 |
** default value will be restored the next time the database is
|
|
|
598 |
** opened.
|
|
|
599 |
*/
|
|
|
600 |
if( sqlite3StrICmp(zLeft,"synchronous")==0 ){
|
|
|
601 |
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
|
|
|
602 |
if( !zRight ){
|
|
|
603 |
returnSingleInt(pParse, "synchronous", pDb->safety_level-1);
|
|
|
604 |
}else{
|
|
|
605 |
if( !db->autoCommit ){
|
|
|
606 |
sqlite3ErrorMsg(pParse,
|
|
|
607 |
"Safety level may not be changed inside a transaction");
|
|
|
608 |
}else{
|
|
|
609 |
pDb->safety_level = getSafetyLevel(zRight)+1;
|
|
|
610 |
}
|
|
|
611 |
}
|
|
|
612 |
}else
|
|
|
613 |
#endif /* SQLITE_OMIT_PAGER_PRAGMAS */
|
|
|
614 |
|
|
|
615 |
#ifndef SQLITE_OMIT_FLAG_PRAGMAS
|
|
|
616 |
if( flagPragma(pParse, zLeft, zRight) ){
|
|
|
617 |
/* The flagPragma() subroutine also generates any necessary code
|
|
|
618 |
** there is nothing more to do here */
|
|
|
619 |
}else
|
|
|
620 |
#endif /* SQLITE_OMIT_FLAG_PRAGMAS */
|
|
|
621 |
|
|
|
622 |
#ifndef SQLITE_OMIT_SCHEMA_PRAGMAS
|
|
|
623 |
/*
|
|
|
624 |
** PRAGMA table_info(<table>)
|
|
|
625 |
**
|
|
|
626 |
** Return a single row for each column of the named table. The columns of
|
|
|
627 |
** the returned data set are:
|
|
|
628 |
**
|
|
|
629 |
** cid: Column id (numbered from left to right, starting at 0)
|
|
|
630 |
** name: Column name
|
|
|
631 |
** type: Column declaration type.
|
|
|
632 |
** notnull: True if 'NOT NULL' is part of column declaration
|
|
|
633 |
** dflt_value: The default value for the column, if any.
|
|
|
634 |
*/
|
|
|
635 |
if( sqlite3StrICmp(zLeft, "table_info")==0 && zRight ){
|
|
|
636 |
Table *pTab;
|
|
|
637 |
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
|
|
|
638 |
pTab = sqlite3FindTable(db, zRight, zDb);
|
|
|
639 |
if( pTab ){
|
|
|
640 |
int i;
|
|
|
641 |
int nHidden = 0;
|
|
|
642 |
Column *pCol;
|
|
|
643 |
sqlite3VdbeSetNumCols(v, 6);
|
|
|
644 |
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "cid", P3_STATIC);
|
|
|
645 |
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", P3_STATIC);
|
|
|
646 |
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "type", P3_STATIC);
|
|
|
647 |
sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "notnull", P3_STATIC);
|
|
|
648 |
sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "dflt_value", P3_STATIC);
|
|
|
649 |
sqlite3VdbeSetColName(v, 5, COLNAME_NAME, "pk", P3_STATIC);
|
|
|
650 |
sqlite3ViewGetColumnNames(pParse, pTab);
|
|
|
651 |
for(i=0, pCol=pTab->aCol; i<pTab->nCol; i++, pCol++){
|
|
|
652 |
const Token *pDflt;
|
|
|
653 |
if( IsHiddenColumn(pCol) ){
|
|
|
654 |
nHidden++;
|
|
|
655 |
continue;
|
|
|
656 |
}
|
|
|
657 |
sqlite3VdbeAddOp(v, OP_Integer, i-nHidden, 0);
|
|
|
658 |
sqlite3VdbeOp3(v, OP_String8, 0, 0, pCol->zName, 0);
|
|
|
659 |
sqlite3VdbeOp3(v, OP_String8, 0, 0,
|
|
|
660 |
pCol->zType ? pCol->zType : "", 0);
|
|
|
661 |
sqlite3VdbeAddOp(v, OP_Integer, pCol->notNull, 0);
|
|
|
662 |
if( pCol->pDflt && (pDflt = &pCol->pDflt->span)->z ){
|
|
|
663 |
sqlite3VdbeOp3(v, OP_String8, 0, 0, (char*)pDflt->z, pDflt->n);
|
|
|
664 |
}else{
|
|
|
665 |
sqlite3VdbeAddOp(v, OP_Null, 0, 0);
|
|
|
666 |
}
|
|
|
667 |
sqlite3VdbeAddOp(v, OP_Integer, pCol->isPrimKey, 0);
|
|
|
668 |
sqlite3VdbeAddOp(v, OP_Callback, 6, 0);
|
|
|
669 |
}
|
|
|
670 |
}
|
|
|
671 |
}else
|
|
|
672 |
|
|
|
673 |
if( sqlite3StrICmp(zLeft, "index_info")==0 && zRight ){
|
|
|
674 |
Index *pIdx;
|
|
|
675 |
Table *pTab;
|
|
|
676 |
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
|
|
|
677 |
pIdx = sqlite3FindIndex(db, zRight, zDb);
|
|
|
678 |
if( pIdx ){
|
|
|
679 |
int i;
|
|
|
680 |
pTab = pIdx->pTable;
|
|
|
681 |
sqlite3VdbeSetNumCols(v, 3);
|
|
|
682 |
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seqno", P3_STATIC);
|
|
|
683 |
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "cid", P3_STATIC);
|
|
|
684 |
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "name", P3_STATIC);
|
|
|
685 |
for(i=0; i<pIdx->nColumn; i++){
|
|
|
686 |
int cnum = pIdx->aiColumn[i];
|
|
|
687 |
sqlite3VdbeAddOp(v, OP_Integer, i, 0);
|
|
|
688 |
sqlite3VdbeAddOp(v, OP_Integer, cnum, 0);
|
|
|
689 |
assert( pTab->nCol>cnum );
|
|
|
690 |
sqlite3VdbeOp3(v, OP_String8, 0, 0, pTab->aCol[cnum].zName, 0);
|
|
|
691 |
sqlite3VdbeAddOp(v, OP_Callback, 3, 0);
|
|
|
692 |
}
|
|
|
693 |
}
|
|
|
694 |
}else
|
|
|
695 |
|
|
|
696 |
if( sqlite3StrICmp(zLeft, "index_list")==0 && zRight ){
|
|
|
697 |
Index *pIdx;
|
|
|
698 |
Table *pTab;
|
|
|
699 |
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
|
|
|
700 |
pTab = sqlite3FindTable(db, zRight, zDb);
|
|
|
701 |
if( pTab ){
|
|
|
702 |
v = sqlite3GetVdbe(pParse);
|
|
|
703 |
pIdx = pTab->pIndex;
|
|
|
704 |
if( pIdx ){
|
|
|
705 |
int i = 0;
|
|
|
706 |
sqlite3VdbeSetNumCols(v, 3);
|
|
|
707 |
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", P3_STATIC);
|
|
|
708 |
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", P3_STATIC);
|
|
|
709 |
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "unique", P3_STATIC);
|
|
|
710 |
while(pIdx){
|
|
|
711 |
sqlite3VdbeAddOp(v, OP_Integer, i, 0);
|
|
|
712 |
sqlite3VdbeOp3(v, OP_String8, 0, 0, pIdx->zName, 0);
|
|
|
713 |
sqlite3VdbeAddOp(v, OP_Integer, pIdx->onError!=OE_None, 0);
|
|
|
714 |
sqlite3VdbeAddOp(v, OP_Callback, 3, 0);
|
|
|
715 |
++i;
|
|
|
716 |
pIdx = pIdx->pNext;
|
|
|
717 |
}
|
|
|
718 |
}
|
|
|
719 |
}
|
|
|
720 |
}else
|
|
|
721 |
|
|
|
722 |
if( sqlite3StrICmp(zLeft, "database_list")==0 ){
|
|
|
723 |
int i;
|
|
|
724 |
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
|
|
|
725 |
sqlite3VdbeSetNumCols(v, 3);
|
|
|
726 |
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", P3_STATIC);
|
|
|
727 |
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", P3_STATIC);
|
|
|
728 |
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "file", P3_STATIC);
|
|
|
729 |
for(i=0; i<db->nDb; i++){
|
|
|
730 |
if( db->aDb[i].pBt==0 ) continue;
|
|
|
731 |
assert( db->aDb[i].zName!=0 );
|
|
|
732 |
sqlite3VdbeAddOp(v, OP_Integer, i, 0);
|
|
|
733 |
sqlite3VdbeOp3(v, OP_String8, 0, 0, db->aDb[i].zName, 0);
|
|
|
734 |
sqlite3VdbeOp3(v, OP_String8, 0, 0,
|
|
|
735 |
sqlite3BtreeGetFilename(db->aDb[i].pBt), 0);
|
|
|
736 |
sqlite3VdbeAddOp(v, OP_Callback, 3, 0);
|
|
|
737 |
}
|
|
|
738 |
}else
|
|
|
739 |
|
|
|
740 |
if( sqlite3StrICmp(zLeft, "collation_list")==0 ){
|
|
|
741 |
int i = 0;
|
|
|
742 |
HashElem *p;
|
|
|
743 |
sqlite3VdbeSetNumCols(v, 2);
|
|
|
744 |
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", P3_STATIC);
|
|
|
745 |
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", P3_STATIC);
|
|
|
746 |
for(p=sqliteHashFirst(&db->aCollSeq); p; p=sqliteHashNext(p)){
|
|
|
747 |
CollSeq *pColl = (CollSeq *)sqliteHashData(p);
|
|
|
748 |
sqlite3VdbeAddOp(v, OP_Integer, i++, 0);
|
|
|
749 |
sqlite3VdbeOp3(v, OP_String8, 0, 0, pColl->zName, 0);
|
|
|
750 |
sqlite3VdbeAddOp(v, OP_Callback, 2, 0);
|
|
|
751 |
}
|
|
|
752 |
}else
|
|
|
753 |
#endif /* SQLITE_OMIT_SCHEMA_PRAGMAS */
|
|
|
754 |
|
|
|
755 |
#ifndef SQLITE_OMIT_FOREIGN_KEY
|
|
|
756 |
if( sqlite3StrICmp(zLeft, "foreign_key_list")==0 && zRight ){
|
|
|
757 |
FKey *pFK;
|
|
|
758 |
Table *pTab;
|
|
|
759 |
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
|
|
|
760 |
pTab = sqlite3FindTable(db, zRight, zDb);
|
|
|
761 |
if( pTab ){
|
|
|
762 |
v = sqlite3GetVdbe(pParse);
|
|
|
763 |
pFK = pTab->pFKey;
|
|
|
764 |
if( pFK ){
|
|
|
765 |
int i = 0;
|
|
|
766 |
sqlite3VdbeSetNumCols(v, 5);
|
|
|
767 |
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "id", P3_STATIC);
|
|
|
768 |
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "seq", P3_STATIC);
|
|
|
769 |
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "table", P3_STATIC);
|
|
|
770 |
sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "from", P3_STATIC);
|
|
|
771 |
sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "to", P3_STATIC);
|
|
|
772 |
while(pFK){
|
|
|
773 |
int j;
|
|
|
774 |
for(j=0; j<pFK->nCol; j++){
|
|
|
775 |
char *zCol = pFK->aCol[j].zCol;
|
|
|
776 |
sqlite3VdbeAddOp(v, OP_Integer, i, 0);
|
|
|
777 |
sqlite3VdbeAddOp(v, OP_Integer, j, 0);
|
|
|
778 |
sqlite3VdbeOp3(v, OP_String8, 0, 0, pFK->zTo, 0);
|
|
|
779 |
sqlite3VdbeOp3(v, OP_String8, 0, 0,
|
|
|
780 |
pTab->aCol[pFK->aCol[j].iFrom].zName, 0);
|
|
|
781 |
sqlite3VdbeOp3(v, zCol ? OP_String8 : OP_Null, 0, 0, zCol, 0);
|
|
|
782 |
sqlite3VdbeAddOp(v, OP_Callback, 5, 0);
|
|
|
783 |
}
|
|
|
784 |
++i;
|
|
|
785 |
pFK = pFK->pNextFrom;
|
|
|
786 |
}
|
|
|
787 |
}
|
|
|
788 |
}
|
|
|
789 |
}else
|
|
|
790 |
#endif /* !defined(SQLITE_OMIT_FOREIGN_KEY) */
|
|
|
791 |
|
|
|
792 |
#ifndef NDEBUG
|
|
|
793 |
if( sqlite3StrICmp(zLeft, "parser_trace")==0 ){
|
|
|
794 |
if( zRight ){
|
|
|
795 |
if( getBoolean(zRight) ){
|
|
|
796 |
sqlite3ParserTrace(stderr, "parser: ");
|
|
|
797 |
}else{
|
|
|
798 |
sqlite3ParserTrace(0, 0);
|
|
|
799 |
}
|
|
|
800 |
}
|
|
|
801 |
}else
|
|
|
802 |
#endif
|
|
|
803 |
|
|
|
804 |
/* Reinstall the LIKE and GLOB functions. The variant of LIKE
|
|
|
805 |
** used will be case sensitive or not depending on the RHS.
|
|
|
806 |
*/
|
|
|
807 |
if( sqlite3StrICmp(zLeft, "case_sensitive_like")==0 ){
|
|
|
808 |
if( zRight ){
|
|
|
809 |
sqlite3RegisterLikeFunctions(db, getBoolean(zRight));
|
|
|
810 |
}
|
|
|
811 |
}else
|
|
|
812 |
|
|
|
813 |
#ifndef SQLITE_INTEGRITY_CHECK_ERROR_MAX
|
|
|
814 |
# define SQLITE_INTEGRITY_CHECK_ERROR_MAX 100
|
|
|
815 |
#endif
|
|
|
816 |
|
|
|
817 |
#ifndef SQLITE_OMIT_INTEGRITY_CHECK
|
|
|
818 |
if( sqlite3StrICmp(zLeft, "integrity_check")==0 ){
|
|
|
819 |
int i, j, addr, mxErr;
|
|
|
820 |
|
|
|
821 |
/* Code that appears at the end of the integrity check. If no error
|
|
|
822 |
** messages have been generated, output OK. Otherwise output the
|
|
|
823 |
** error message
|
|
|
824 |
*/
|
|
|
825 |
static const VdbeOpList endCode[] = {
|
|
|
826 |
{ OP_MemLoad, 0, 0, 0},
|
|
|
827 |
{ OP_Integer, 0, 0, 0},
|
|
|
828 |
{ OP_Ne, 0, 0, 0}, /* 2 */
|
|
|
829 |
{ OP_String8, 0, 0, "ok"},
|
|
|
830 |
{ OP_Callback, 1, 0, 0},
|
|
|
831 |
};
|
|
|
832 |
|
|
|
833 |
/* Initialize the VDBE program */
|
|
|
834 |
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
|
|
|
835 |
sqlite3VdbeSetNumCols(v, 1);
|
|
|
836 |
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "integrity_check", P3_STATIC);
|
|
|
837 |
|
|
|
838 |
/* Set the maximum error count */
|
|
|
839 |
mxErr = SQLITE_INTEGRITY_CHECK_ERROR_MAX;
|
|
|
840 |
if( zRight ){
|
|
|
841 |
mxErr = atoi(zRight);
|
|
|
842 |
if( mxErr<=0 ){
|
|
|
843 |
mxErr = SQLITE_INTEGRITY_CHECK_ERROR_MAX;
|
|
|
844 |
}
|
|
|
845 |
}
|
|
|
846 |
sqlite3VdbeAddOp(v, OP_MemInt, mxErr, 0);
|
|
|
847 |
|
|
|
848 |
/* Do an integrity check on each database file */
|
|
|
849 |
for(i=0; i<db->nDb; i++){
|
|
|
850 |
HashElem *x;
|
|
|
851 |
Hash *pTbls;
|
|
|
852 |
int cnt = 0;
|
|
|
853 |
|
|
|
854 |
if( OMIT_TEMPDB && i==1 ) continue;
|
|
|
855 |
|
|
|
856 |
sqlite3CodeVerifySchema(pParse, i);
|
|
|
857 |
addr = sqlite3VdbeAddOp(v, OP_IfMemPos, 0, 0);
|
|
|
858 |
sqlite3VdbeAddOp(v, OP_Halt, 0, 0);
|
|
|
859 |
sqlite3VdbeJumpHere(v, addr);
|
|
|
860 |
|
|
|
861 |
/* Do an integrity check of the B-Tree
|
|
|
862 |
*/
|
|
|
863 |
pTbls = &db->aDb[i].pSchema->tblHash;
|
|
|
864 |
for(x=sqliteHashFirst(pTbls); x; x=sqliteHashNext(x)){
|
|
|
865 |
Table *pTab = (Table*)sqliteHashData(x);
|
|
|
866 |
Index *pIdx;
|
|
|
867 |
sqlite3VdbeAddOp(v, OP_Integer, pTab->tnum, 0);
|
|
|
868 |
cnt++;
|
|
|
869 |
for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
|
|
|
870 |
sqlite3VdbeAddOp(v, OP_Integer, pIdx->tnum, 0);
|
|
|
871 |
cnt++;
|
|
|
872 |
}
|
|
|
873 |
}
|
|
|
874 |
if( cnt==0 ) continue;
|
|
|
875 |
sqlite3VdbeAddOp(v, OP_IntegrityCk, 0, i);
|
|
|
876 |
addr = sqlite3VdbeAddOp(v, OP_IsNull, -1, 0);
|
|
|
877 |
sqlite3VdbeOp3(v, OP_String8, 0, 0,
|
|
|
878 |
sqlite3MPrintf(db, "*** in database %s ***\n", db->aDb[i].zName),
|
|
|
879 |
P3_DYNAMIC);
|
|
|
880 |
sqlite3VdbeAddOp(v, OP_Pull, 1, 0);
|
|
|
881 |
sqlite3VdbeAddOp(v, OP_Concat, 0, 0);
|
|
|
882 |
sqlite3VdbeAddOp(v, OP_Callback, 1, 0);
|
|
|
883 |
sqlite3VdbeJumpHere(v, addr);
|
|
|
884 |
|
|
|
885 |
/* Make sure all the indices are constructed correctly.
|
|
|
886 |
*/
|
|
|
887 |
for(x=sqliteHashFirst(pTbls); x; x=sqliteHashNext(x)){
|
|
|
888 |
Table *pTab = (Table*)sqliteHashData(x);
|
|
|
889 |
Index *pIdx;
|
|
|
890 |
int loopTop;
|
|
|
891 |
|
|
|
892 |
if( pTab->pIndex==0 ) continue;
|
|
|
893 |
addr = sqlite3VdbeAddOp(v, OP_IfMemPos, 0, 0);
|
|
|
894 |
sqlite3VdbeAddOp(v, OP_Halt, 0, 0);
|
|
|
895 |
sqlite3VdbeJumpHere(v, addr);
|
|
|
896 |
sqlite3OpenTableAndIndices(pParse, pTab, 1, OP_OpenRead);
|
|
|
897 |
sqlite3VdbeAddOp(v, OP_MemInt, 0, 1);
|
|
|
898 |
loopTop = sqlite3VdbeAddOp(v, OP_Rewind, 1, 0);
|
|
|
899 |
sqlite3VdbeAddOp(v, OP_MemIncr, 1, 1);
|
|
|
900 |
for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){
|
|
|
901 |
int jmp2;
|
|
|
902 |
static const VdbeOpList idxErr[] = {
|
|
|
903 |
{ OP_MemIncr, -1, 0, 0},
|
|
|
904 |
{ OP_String8, 0, 0, "rowid "},
|
|
|
905 |
{ OP_Rowid, 1, 0, 0},
|
|
|
906 |
{ OP_String8, 0, 0, " missing from index "},
|
|
|
907 |
{ OP_String8, 0, 0, 0}, /* 4 */
|
|
|
908 |
{ OP_Concat, 2, 0, 0},
|
|
|
909 |
{ OP_Callback, 1, 0, 0},
|
|
|
910 |
};
|
|
|
911 |
sqlite3GenerateIndexKey(v, pIdx, 1);
|
|
|
912 |
jmp2 = sqlite3VdbeAddOp(v, OP_Found, j+2, 0);
|
|
|
913 |
addr = sqlite3VdbeAddOpList(v, ArraySize(idxErr), idxErr);
|
|
|
914 |
sqlite3VdbeChangeP3(v, addr+4, pIdx->zName, P3_STATIC);
|
|
|
915 |
sqlite3VdbeJumpHere(v, jmp2);
|
|
|
916 |
}
|
|
|
917 |
sqlite3VdbeAddOp(v, OP_Next, 1, loopTop+1);
|
|
|
918 |
sqlite3VdbeJumpHere(v, loopTop);
|
|
|
919 |
for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){
|
|
|
920 |
static const VdbeOpList cntIdx[] = {
|
|
|
921 |
{ OP_MemInt, 0, 2, 0},
|
|
|
922 |
{ OP_Rewind, 0, 0, 0}, /* 1 */
|
|
|
923 |
{ OP_MemIncr, 1, 2, 0},
|
|
|
924 |
{ OP_Next, 0, 0, 0}, /* 3 */
|
|
|
925 |
{ OP_MemLoad, 1, 0, 0},
|
|
|
926 |
{ OP_MemLoad, 2, 0, 0},
|
|
|
927 |
{ OP_Eq, 0, 0, 0}, /* 6 */
|
|
|
928 |
{ OP_MemIncr, -1, 0, 0},
|
|
|
929 |
{ OP_String8, 0, 0, "wrong # of entries in index "},
|
|
|
930 |
{ OP_String8, 0, 0, 0}, /* 9 */
|
|
|
931 |
{ OP_Concat, 0, 0, 0},
|
|
|
932 |
{ OP_Callback, 1, 0, 0},
|
|
|
933 |
};
|
|
|
934 |
if( pIdx->tnum==0 ) continue;
|
|
|
935 |
addr = sqlite3VdbeAddOp(v, OP_IfMemPos, 0, 0);
|
|
|
936 |
sqlite3VdbeAddOp(v, OP_Halt, 0, 0);
|
|
|
937 |
sqlite3VdbeJumpHere(v, addr);
|
|
|
938 |
addr = sqlite3VdbeAddOpList(v, ArraySize(cntIdx), cntIdx);
|
|
|
939 |
sqlite3VdbeChangeP1(v, addr+1, j+2);
|
|
|
940 |
sqlite3VdbeChangeP2(v, addr+1, addr+4);
|
|
|
941 |
sqlite3VdbeChangeP1(v, addr+3, j+2);
|
|
|
942 |
sqlite3VdbeChangeP2(v, addr+3, addr+2);
|
|
|
943 |
sqlite3VdbeJumpHere(v, addr+6);
|
|
|
944 |
sqlite3VdbeChangeP3(v, addr+9, pIdx->zName, P3_STATIC);
|
|
|
945 |
}
|
|
|
946 |
}
|
|
|
947 |
}
|
|
|
948 |
addr = sqlite3VdbeAddOpList(v, ArraySize(endCode), endCode);
|
|
|
949 |
sqlite3VdbeChangeP1(v, addr+1, mxErr);
|
|
|
950 |
sqlite3VdbeJumpHere(v, addr+2);
|
|
|
951 |
}else
|
|
|
952 |
#endif /* SQLITE_OMIT_INTEGRITY_CHECK */
|
|
|
953 |
|
|
|
954 |
#ifndef SQLITE_OMIT_UTF16
|
|
|
955 |
/*
|
|
|
956 |
** PRAGMA encoding
|
|
|
957 |
** PRAGMA encoding = "utf-8"|"utf-16"|"utf-16le"|"utf-16be"
|
|
|
958 |
**
|
|
|
959 |
** In its first form, this pragma returns the encoding of the main
|
|
|
960 |
** database. If the database is not initialized, it is initialized now.
|
|
|
961 |
**
|
|
|
962 |
** The second form of this pragma is a no-op if the main database file
|
|
|
963 |
** has not already been initialized. In this case it sets the default
|
|
|
964 |
** encoding that will be used for the main database file if a new file
|
|
|
965 |
** is created. If an existing main database file is opened, then the
|
|
|
966 |
** default text encoding for the existing database is used.
|
|
|
967 |
**
|
|
|
968 |
** In all cases new databases created using the ATTACH command are
|
|
|
969 |
** created to use the same default text encoding as the main database. If
|
|
|
970 |
** the main database has not been initialized and/or created when ATTACH
|
|
|
971 |
** is executed, this is done before the ATTACH operation.
|
|
|
972 |
**
|
|
|
973 |
** In the second form this pragma sets the text encoding to be used in
|
|
|
974 |
** new database files created using this database handle. It is only
|
|
|
975 |
** useful if invoked immediately after the main database i
|
|
|
976 |
*/
|
|
|
977 |
if( sqlite3StrICmp(zLeft, "encoding")==0 ){
|
|
|
978 |
static const struct EncName {
|
|
|
979 |
char *zName;
|
|
|
980 |
u8 enc;
|
|
|
981 |
} encnames[] = {
|
|
|
982 |
{ "UTF-8", SQLITE_UTF8 },
|
|
|
983 |
{ "UTF8", SQLITE_UTF8 },
|
|
|
984 |
{ "UTF-16le", SQLITE_UTF16LE },
|
|
|
985 |
{ "UTF16le", SQLITE_UTF16LE },
|
|
|
986 |
{ "UTF-16be", SQLITE_UTF16BE },
|
|
|
987 |
{ "UTF16be", SQLITE_UTF16BE },
|
|
|
988 |
{ "UTF-16", 0 }, /* SQLITE_UTF16NATIVE */
|
|
|
989 |
{ "UTF16", 0 }, /* SQLITE_UTF16NATIVE */
|
|
|
990 |
{ 0, 0 }
|
|
|
991 |
};
|
|
|
992 |
const struct EncName *pEnc;
|
|
|
993 |
if( !zRight ){ /* "PRAGMA encoding" */
|
|
|
994 |
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
|
|
|
995 |
sqlite3VdbeSetNumCols(v, 1);
|
|
|
996 |
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "encoding", P3_STATIC);
|
|
|
997 |
sqlite3VdbeAddOp(v, OP_String8, 0, 0);
|
|
|
998 |
for(pEnc=&encnames[0]; pEnc->zName; pEnc++){
|
|
|
999 |
if( pEnc->enc==ENC(pParse->db) ){
|
|
|
1000 |
sqlite3VdbeChangeP3(v, -1, pEnc->zName, P3_STATIC);
|
|
|
1001 |
break;
|
|
|
1002 |
}
|
|
|
1003 |
}
|
|
|
1004 |
sqlite3VdbeAddOp(v, OP_Callback, 1, 0);
|
|
|
1005 |
}else{ /* "PRAGMA encoding = XXX" */
|
|
|
1006 |
/* Only change the value of sqlite.enc if the database handle is not
|
|
|
1007 |
** initialized. If the main database exists, the new sqlite.enc value
|
|
|
1008 |
** will be overwritten when the schema is next loaded. If it does not
|
|
|
1009 |
** already exists, it will be created to use the new encoding value.
|
|
|
1010 |
*/
|
|
|
1011 |
if(
|
|
|
1012 |
!(DbHasProperty(db, 0, DB_SchemaLoaded)) ||
|
|
|
1013 |
DbHasProperty(db, 0, DB_Empty)
|
|
|
1014 |
){
|
|
|
1015 |
for(pEnc=&encnames[0]; pEnc->zName; pEnc++){
|
|
|
1016 |
if( 0==sqlite3StrICmp(zRight, pEnc->zName) ){
|
|
|
1017 |
ENC(pParse->db) = pEnc->enc ? pEnc->enc : SQLITE_UTF16NATIVE;
|
|
|
1018 |
break;
|
|
|
1019 |
}
|
|
|
1020 |
}
|
|
|
1021 |
if( !pEnc->zName ){
|
|
|
1022 |
sqlite3ErrorMsg(pParse, "unsupported encoding: %s", zRight);
|
|
|
1023 |
}
|
|
|
1024 |
}
|
|
|
1025 |
}
|
|
|
1026 |
}else
|
|
|
1027 |
#endif /* SQLITE_OMIT_UTF16 */
|
|
|
1028 |
|
|
|
1029 |
#ifndef SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS
|
|
|
1030 |
/*
|
|
|
1031 |
** PRAGMA [database.]schema_version
|
|
|
1032 |
** PRAGMA [database.]schema_version = <integer>
|
|
|
1033 |
**
|
|
|
1034 |
** PRAGMA [database.]user_version
|
|
|
1035 |
** PRAGMA [database.]user_version = <integer>
|
|
|
1036 |
**
|
|
|
1037 |
** The pragma's schema_version and user_version are used to set or get
|
|
|
1038 |
** the value of the schema-version and user-version, respectively. Both
|
|
|
1039 |
** the schema-version and the user-version are 32-bit signed integers
|
|
|
1040 |
** stored in the database header.
|
|
|
1041 |
**
|
|
|
1042 |
** The schema-cookie is usually only manipulated internally by SQLite. It
|
|
|
1043 |
** is incremented by SQLite whenever the database schema is modified (by
|
|
|
1044 |
** creating or dropping a table or index). The schema version is used by
|
|
|
1045 |
** SQLite each time a query is executed to ensure that the internal cache
|
|
|
1046 |
** of the schema used when compiling the SQL query matches the schema of
|
|
|
1047 |
** the database against which the compiled query is actually executed.
|
|
|
1048 |
** Subverting this mechanism by using "PRAGMA schema_version" to modify
|
|
|
1049 |
** the schema-version is potentially dangerous and may lead to program
|
|
|
1050 |
** crashes or database corruption. Use with caution!
|
|
|
1051 |
**
|
|
|
1052 |
** The user-version is not used internally by SQLite. It may be used by
|
|
|
1053 |
** applications for any purpose.
|
|
|
1054 |
*/
|
|
|
1055 |
if( sqlite3StrICmp(zLeft, "schema_version")==0
|
|
|
1056 |
|| sqlite3StrICmp(zLeft, "user_version")==0
|
|
|
1057 |
|| sqlite3StrICmp(zLeft, "freelist_count")==0
|
|
|
1058 |
){
|
|
|
1059 |
|
|
|
1060 |
int iCookie; /* Cookie index. 0 for schema-cookie, 6 for user-cookie. */
|
|
|
1061 |
sqlite3VdbeUsesBtree(v, iDb);
|
|
|
1062 |
switch( zLeft[0] ){
|
|
|
1063 |
case 's': case 'S':
|
|
|
1064 |
iCookie = 0;
|
|
|
1065 |
break;
|
|
|
1066 |
case 'f': case 'F':
|
|
|
1067 |
iCookie = 1;
|
|
|
1068 |
iDb = (-1*(iDb+1));
|
|
|
1069 |
assert(iDb<=0);
|
|
|
1070 |
break;
|
|
|
1071 |
default:
|
|
|
1072 |
iCookie = 5;
|
|
|
1073 |
break;
|
|
|
1074 |
}
|
|
|
1075 |
|
|
|
1076 |
if( zRight && iDb>=0 ){
|
|
|
1077 |
/* Write the specified cookie value */
|
|
|
1078 |
static const VdbeOpList setCookie[] = {
|
|
|
1079 |
{ OP_Transaction, 0, 1, 0}, /* 0 */
|
|
|
1080 |
{ OP_Integer, 0, 0, 0}, /* 1 */
|
|
|
1081 |
{ OP_SetCookie, 0, 0, 0}, /* 2 */
|
|
|
1082 |
};
|
|
|
1083 |
int addr = sqlite3VdbeAddOpList(v, ArraySize(setCookie), setCookie);
|
|
|
1084 |
sqlite3VdbeChangeP1(v, addr, iDb);
|
|
|
1085 |
sqlite3VdbeChangeP1(v, addr+1, atoi(zRight));
|
|
|
1086 |
sqlite3VdbeChangeP1(v, addr+2, iDb);
|
|
|
1087 |
sqlite3VdbeChangeP2(v, addr+2, iCookie);
|
|
|
1088 |
}else{
|
|
|
1089 |
/* Read the specified cookie value */
|
|
|
1090 |
static const VdbeOpList readCookie[] = {
|
|
|
1091 |
{ OP_ReadCookie, 0, 0, 0}, /* 0 */
|
|
|
1092 |
{ OP_Callback, 1, 0, 0}
|
|
|
1093 |
};
|
|
|
1094 |
int addr = sqlite3VdbeAddOpList(v, ArraySize(readCookie), readCookie);
|
|
|
1095 |
sqlite3VdbeChangeP1(v, addr, iDb);
|
|
|
1096 |
sqlite3VdbeChangeP2(v, addr, iCookie);
|
|
|
1097 |
sqlite3VdbeSetNumCols(v, 1);
|
|
|
1098 |
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, zLeft, P3_TRANSIENT);
|
|
|
1099 |
}
|
|
|
1100 |
}else
|
|
|
1101 |
#endif /* SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS */
|
|
|
1102 |
|
|
|
1103 |
#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST)
|
|
|
1104 |
/*
|
|
|
1105 |
** Report the current state of file logs for all databases
|
|
|
1106 |
*/
|
|
|
1107 |
if( sqlite3StrICmp(zLeft, "lock_status")==0 ){
|
|
|
1108 |
static const char *const azLockName[] = {
|
|
|
1109 |
"unlocked", "shared", "reserved", "pending", "exclusive"
|
|
|
1110 |
};
|
|
|
1111 |
int i;
|
|
|
1112 |
Vdbe *v = sqlite3GetVdbe(pParse);
|
|
|
1113 |
sqlite3VdbeSetNumCols(v, 2);
|
|
|
1114 |
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "database", P3_STATIC);
|
|
|
1115 |
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "status", P3_STATIC);
|
|
|
1116 |
for(i=0; i<db->nDb; i++){
|
|
|
1117 |
Btree *pBt;
|
|
|
1118 |
Pager *pPager;
|
|
|
1119 |
const char *zState = "unknown";
|
|
|
1120 |
int j;
|
|
|
1121 |
if( db->aDb[i].zName==0 ) continue;
|
|
|
1122 |
sqlite3VdbeOp3(v, OP_String8, 0, 0, db->aDb[i].zName, P3_STATIC);
|
|
|
1123 |
pBt = db->aDb[i].pBt;
|
|
|
1124 |
if( pBt==0 || (pPager = sqlite3BtreePager(pBt))==0 ){
|
|
|
1125 |
zState = "closed";
|
|
|
1126 |
}else if( sqlite3_file_control(db, db->aDb[i].zName,
|
|
|
1127 |
SQLITE_FCNTL_LOCKSTATE, &j)==SQLITE_OK ){
|
|
|
1128 |
zState = azLockName[j];
|
|
|
1129 |
}
|
|
|
1130 |
sqlite3VdbeOp3(v, OP_String8, 0, 0, zState, P3_STATIC);
|
|
|
1131 |
sqlite3VdbeAddOp(v, OP_Callback, 2, 0);
|
|
|
1132 |
}
|
|
|
1133 |
}else
|
|
|
1134 |
#endif
|
|
|
1135 |
|
|
|
1136 |
#ifdef SQLITE_SSE
|
|
|
1137 |
/*
|
|
|
1138 |
** Check to see if the sqlite_statements table exists. Create it
|
|
|
1139 |
** if it does not.
|
|
|
1140 |
*/
|
|
|
1141 |
if( sqlite3StrICmp(zLeft, "create_sqlite_statement_table")==0 ){
|
|
|
1142 |
extern int sqlite3CreateStatementsTable(Parse*);
|
|
|
1143 |
sqlite3CreateStatementsTable(pParse);
|
|
|
1144 |
}else
|
|
|
1145 |
#endif
|
|
|
1146 |
|
|
|
1147 |
#if SQLITE_HAS_CODEC
|
|
|
1148 |
if( sqlite3StrICmp(zLeft, "key")==0 ){
|
|
|
1149 |
sqlite3_key(db, zRight, strlen(zRight));
|
|
|
1150 |
}else
|
|
|
1151 |
#endif
|
|
|
1152 |
#if SQLITE_HAS_CODEC || defined(SQLITE_ENABLE_CEROD)
|
|
|
1153 |
if( sqlite3StrICmp(zLeft, "activate_extensions")==0 ){
|
|
|
1154 |
#if SQLITE_HAS_CODEC
|
|
|
1155 |
if( sqlite3StrNICmp(zRight, "see-", 4)==0 ){
|
|
|
1156 |
extern void sqlite3_activate_see(const char*);
|
|
|
1157 |
sqlite3_activate_see(&zRight[4]);
|
|
|
1158 |
}
|
|
|
1159 |
#endif
|
|
|
1160 |
#ifdef SQLITE_ENABLE_CEROD
|
|
|
1161 |
if( sqlite3StrNICmp(zRight, "cerod-", 6)==0 ){
|
|
|
1162 |
extern void sqlite3_activate_cerod(const char*);
|
|
|
1163 |
sqlite3_activate_cerod(&zRight[6]);
|
|
|
1164 |
}
|
|
|
1165 |
#endif
|
|
|
1166 |
}
|
|
|
1167 |
#endif
|
|
|
1168 |
|
|
|
1169 |
{}
|
|
|
1170 |
|
|
|
1171 |
if( v ){
|
|
|
1172 |
/* Code an OP_Expire at the end of each PRAGMA program to cause
|
|
|
1173 |
** the VDBE implementing the pragma to expire. Most (all?) pragmas
|
|
|
1174 |
** are only valid for a single execution.
|
|
|
1175 |
*/
|
|
|
1176 |
sqlite3VdbeAddOp(v, OP_Expire, 1, 0);
|
|
|
1177 |
|
|
|
1178 |
/*
|
|
|
1179 |
** Reset the safety level, in case the fullfsync flag or synchronous
|
|
|
1180 |
** setting changed.
|
|
|
1181 |
*/
|
|
|
1182 |
#ifndef SQLITE_OMIT_PAGER_PRAGMAS
|
|
|
1183 |
if( db->autoCommit ){
|
|
|
1184 |
sqlite3BtreeSetSafetyLevel(pDb->pBt, pDb->safety_level,
|
|
|
1185 |
(db->flags&SQLITE_FullFSync)!=0);
|
|
|
1186 |
}
|
|
|
1187 |
#endif
|
|
|
1188 |
}
|
|
|
1189 |
pragma_out:
|
|
|
1190 |
sqlite3_free(zLeft);
|
|
|
1191 |
sqlite3_free(zRight);
|
|
|
1192 |
}
|
|
|
1193 |
|
|
|
1194 |
#endif /* SQLITE_OMIT_PRAGMA || SQLITE_OMIT_PARSER */
|