--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/persistentstorage/sqlite3api/TEST/TclScript/alter2.test Fri Jan 22 11:06:30 2010 +0200
@@ -0,0 +1,450 @@
+# 2005 February 18
+#
+# The author disclaims copyright to this source code. In place of
+# a legal notice, here is a blessing:
+#
+# May you do good and not evil.
+# May you find forgiveness for yourself and forgive others.
+# May you share freely, never taking more than you give.
+#
+#*************************************************************************
+# This file implements regression tests for SQLite library. The
+# focus of this script is testing that SQLite can handle a subtle
+# file format change that may be used in the future to implement
+# "ALTER TABLE ... ADD COLUMN".
+#
+# $Id: alter2.test,v 1.13 2008/03/19 00:21:31 drh Exp $
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+# We have to have pragmas in order to do this test
+ifcapable {!pragma} return
+
+# These tests do not work if there is a codec.
+#
+#if {[catch {sqlite3 -has_codec} r] || $r} return
+
+# The file format change affects the way row-records stored in tables (but
+# not indices) are interpreted. Before version 3.1.3, a row-record for a
+# table with N columns was guaranteed to contain exactly N fields. As
+# of version 3.1.3, the record may contain up to N fields. In this case
+# the M fields that are present are the values for the left-most M
+# columns. The (N-M) rightmost columns contain NULL.
+#
+# If any records in the database contain less fields than their table
+# has columns, then the file-format meta value should be set to (at least) 2.
+#
+
+# This procedure sets the value of the file-format in file 'test.db'
+# to $newval. Also, the schema cookie is incremented.
+#
+proc set_file_format {newval} {
+ hexio_write test.db 44 [hexio_render_int32 $newval]
+ set schemacookie [hexio_get_int [hexio_read test.db 40 4]]
+ incr schemacookie
+ hexio_write test.db 40 [hexio_render_int32 $schemacookie]
+ return {}
+}
+
+# This procedure returns the value of the file-format in file 'test.db'.
+#
+proc get_file_format {{fname test.db}} {
+ return [hexio_get_int [hexio_read $fname 44 4]]
+}
+
+# This procedure sets the SQL statement stored for table $tbl in the
+# sqlite_master table of file 'test.db' to $sql. Also set the file format
+# to the supplied value. This is 2 if the added column has a default that is
+# NULL, or 3 otherwise.
+#
+proc alter_table {tbl sql {file_format 2}} {
+ sqlite3 dbat test.db
+ set s [string map {' ''} $sql]
+ set t [string map {' ''} $tbl]
+ dbat eval [subst {
+ PRAGMA writable_schema = 1;
+ UPDATE sqlite_master SET sql = '$s' WHERE name = '$t' AND type = 'table';
+ PRAGMA writable_schema = 0;
+ }]
+ dbat close
+ set_file_format 2
+}
+
+#-----------------------------------------------------------------------
+# Some basic tests to make sure short rows are handled.
+#
+do_test alter2-1.1 {
+ execsql {
+ CREATE TABLE abc(a, b);
+ INSERT INTO abc VALUES(1, 2);
+ INSERT INTO abc VALUES(3, 4);
+ INSERT INTO abc VALUES(5, 6);
+ }
+} {}
+do_test alter2-1.2 {
+ # ALTER TABLE abc ADD COLUMN c;
+ alter_table abc {CREATE TABLE abc(a, b, c);}
+} {}
+do_test alter2-1.3 {
+ execsql {
+ SELECT * FROM abc;
+ }
+} {1 2 {} 3 4 {} 5 6 {}}
+do_test alter2-1.4 {
+ execsql {
+ UPDATE abc SET c = 10 WHERE a = 1;
+ SELECT * FROM abc;
+ }
+} {1 2 10 3 4 {} 5 6 {}}
+do_test alter2-1.5 {
+ execsql {
+ CREATE INDEX abc_i ON abc(c);
+ }
+} {}
+do_test alter2-1.6 {
+ execsql {
+ SELECT c FROM abc ORDER BY c;
+ }
+} {{} {} 10}
+do_test alter2-1.7 {
+ execsql {
+ SELECT * FROM abc WHERE c = 10;
+ }
+} {1 2 10}
+do_test alter2-1.8 {
+ execsql {
+ SELECT sum(a), c FROM abc GROUP BY c;
+ }
+} {8 {} 1 10}
+do_test alter2-1.9 {
+ # ALTER TABLE abc ADD COLUMN d;
+ alter_table abc {CREATE TABLE abc(a, b, c, d);}
+ execsql { SELECT * FROM abc; }
+ execsql {
+ UPDATE abc SET d = 11 WHERE c IS NULL AND a<4;
+ SELECT * FROM abc;
+ }
+} {1 2 10 {} 3 4 {} 11 5 6 {} {}}
+do_test alter2-1.10 {
+ execsql {
+ SELECT typeof(d) FROM abc;
+ }
+} {null integer null}
+do_test alter2-1.99 {
+ execsql {
+ DROP TABLE abc;
+ }
+} {}
+
+#-----------------------------------------------------------------------
+# Test that views work when the underlying table structure is changed.
+#
+ifcapable view {
+ do_test alter2-2.1 {
+ execsql {
+ CREATE TABLE abc2(a, b, c);
+ INSERT INTO abc2 VALUES(1, 2, 10);
+ INSERT INTO abc2 VALUES(3, 4, NULL);
+ INSERT INTO abc2 VALUES(5, 6, NULL);
+ CREATE VIEW abc2_v AS SELECT * FROM abc2;
+ SELECT * FROM abc2_v;
+ }
+ } {1 2 10 3 4 {} 5 6 {}}
+ do_test alter2-2.2 {
+ # ALTER TABLE abc ADD COLUMN d;
+ alter_table abc2 {CREATE TABLE abc2(a, b, c, d);}
+ execsql {
+ SELECT * FROM abc2_v;
+ }
+ } {1 2 10 {} 3 4 {} {} 5 6 {} {}}
+ do_test alter2-2.3 {
+ execsql {
+ DROP TABLE abc2;
+ DROP VIEW abc2_v;
+ }
+ } {}
+}
+
+#-----------------------------------------------------------------------
+# Test that triggers work when a short row is copied to the old.*
+# trigger pseudo-table.
+#
+ifcapable trigger {
+ do_test alter2-3.1 {
+ execsql {
+ CREATE TABLE abc3(a, b);
+ CREATE TABLE blog(o, n);
+ CREATE TRIGGER abc3_t AFTER UPDATE OF b ON abc3 BEGIN
+ INSERT INTO blog VALUES(old.b, new.b);
+ END;
+ }
+ } {}
+ do_test alter2-3.2 {
+ execsql {
+ INSERT INTO abc3 VALUES(1, 4);
+ UPDATE abc3 SET b = 2 WHERE b = 4;
+ SELECT * FROM blog;
+ }
+ } {4 2}
+ do_test alter2-3.3 {
+ execsql {
+ INSERT INTO abc3 VALUES(3, 4);
+ INSERT INTO abc3 VALUES(5, 6);
+ }
+ alter_table abc3 {CREATE TABLE abc3(a, b, c);}
+ execsql {
+ SELECT * FROM abc3;
+ }
+ } {1 2 {} 3 4 {} 5 6 {}}
+ do_test alter2-3.4 {
+ execsql {
+ UPDATE abc3 SET b = b*2 WHERE a<4;
+ SELECT * FROM abc3;
+ }
+ } {1 4 {} 3 8 {} 5 6 {}}
+ do_test alter2-3.5 {
+ execsql {
+ SELECT * FROM blog;
+ }
+ } {4 2 2 4 4 8}
+
+ do_test alter2-3.6 {
+ execsql {
+ CREATE TABLE clog(o, n);
+ CREATE TRIGGER abc3_t2 AFTER UPDATE OF c ON abc3 BEGIN
+ INSERT INTO clog VALUES(old.c, new.c);
+ END;
+ UPDATE abc3 SET c = a*2;
+ SELECT * FROM clog;
+ }
+ } {{} 2 {} 6 {} 10}
+}
+
+#---------------------------------------------------------------------
+# Check that an error occurs if the database is upgraded to a file
+# format that SQLite does not support (in this case 5). Note: The
+# file format is checked each time the schema is read, so changing the
+# file format requires incrementing the schema cookie.
+#
+do_test alter2-4.1 {
+ db close
+ set_file_format 5
+ sqlite3 db test.db
+} {}
+do_test alter2-4.2 {
+ # We have to run two queries here because the Tcl interface uses
+ # sqlite3_prepare_v2(). In this case, the first query encounters an
+ # SQLITE_SCHEMA error. Then, when trying to recompile the statement, the
+ # "unsupported file format" error is encountered. So the error code
+ # returned is SQLITE_SCHEMA, not SQLITE_ERROR as required by the following
+ # test case.
+ #
+ # When the query is attempted a second time, the same error message is
+ # returned but the error code is SQLITE_ERROR, because the unsupported
+ # file format was detected during a call to sqlite3_prepare(), not
+ # sqlite3_step().
+ #
+ catchsql { SELECT * FROM sqlite_master; }
+ catchsql { SELECT * FROM sqlite_master; }
+} {1 {unsupported file format}}
+do_test alter2-4.3 {
+ sqlite3_errcode db
+} {SQLITE_ERROR}
+do_test alter2-4.4 {
+ set ::DB [sqlite3_connection_pointer db]
+ catchsql {
+ SELECT * FROM sqlite_master;
+ }
+} {1 {unsupported file format}}
+do_test alter2-4.5 {
+ sqlite3_errcode db
+} {SQLITE_ERROR}
+
+#---------------------------------------------------------------------
+# Check that executing VACUUM on a file with file-format version 2
+# resets the file format to 1.
+#
+set default_file_format [expr $SQLITE_DEFAULT_FILE_FORMAT==4 ? 4 : 1]
+ifcapable vacuum {
+ do_test alter2-5.1 {
+ set_file_format 2
+ db close
+ sqlite3 db test.db
+ execsql {SELECT 1 FROM sqlite_master LIMIT 1;}
+ get_file_format
+ } {2}
+ do_test alter2-5.2 {
+ execsql {
+ VACUUM;
+ }
+ } {}
+ do_test alter2-5.3 {
+ get_file_format
+ } $default_file_format
+}
+
+#---------------------------------------------------------------------
+# Test that when a database with file-format 2 is opened, new
+# databases are still created with file-format 1.
+#
+do_test alter2-6.1 {
+ db close
+ set_file_format 2
+ sqlite3 db test.db
+ get_file_format
+} {2}
+ifcapable attach {
+ do_test alter2-6.2 {
+ file delete -force test2.db-journal
+ file delete -force test2.db
+ execsql {
+ ATTACH 'test2.db' AS aux;
+ CREATE TABLE aux.t1(a, b);
+ }
+ get_file_format test2.db
+ } $default_file_format
+}
+do_test alter2-6.3 {
+ execsql {
+ CREATE TABLE t1(a, b);
+ }
+ get_file_format
+} {2}
+
+#---------------------------------------------------------------------
+# Test that types and values for columns added with default values
+# other than NULL work with SELECT statements.
+#
+do_test alter2-7.1 {
+ execsql {
+ DROP TABLE t1;
+ CREATE TABLE t1(a);
+ INSERT INTO t1 VALUES(1);
+ INSERT INTO t1 VALUES(2);
+ INSERT INTO t1 VALUES(3);
+ INSERT INTO t1 VALUES(4);
+ SELECT * FROM t1;
+ }
+} {1 2 3 4}
+do_test alter2-7.2 {
+ set sql {CREATE TABLE t1(a, b DEFAULT '123', c INTEGER DEFAULT '123')}
+ alter_table t1 $sql 3
+ execsql {
+ SELECT * FROM t1 LIMIT 1;
+ }
+} {1 123 123}
+do_test alter2-7.3 {
+ execsql {
+ SELECT a, typeof(a), b, typeof(b), c, typeof(c) FROM t1 LIMIT 1;
+ }
+} {1 integer 123 text 123 integer}
+do_test alter2-7.4 {
+ execsql {
+ SELECT a, typeof(a), b, typeof(b), c, typeof(c) FROM t1 LIMIT 1;
+ }
+} {1 integer 123 text 123 integer}
+do_test alter2-7.5 {
+ set sql {CREATE TABLE t1(a, b DEFAULT -123.0, c VARCHAR(10) default 5)}
+ alter_table t1 $sql 3
+ execsql {
+ SELECT a, typeof(a), b, typeof(b), c, typeof(c) FROM t1 LIMIT 1;
+ }
+} {1 integer -123 integer 5 text}
+
+#-----------------------------------------------------------------------
+# Test that UPDATE trigger tables work with default values, and that when
+# a row is updated the default values are correctly transfered to the
+# new row.
+#
+ifcapable trigger {
+db function set_val {set ::val}
+ do_test alter2-8.1 {
+ execsql {
+ CREATE TRIGGER trig1 BEFORE UPDATE ON t1 BEGIN
+ SELECT set_val(
+ old.b||' '||typeof(old.b)||' '||old.c||' '||typeof(old.c)||' '||
+ new.b||' '||typeof(new.b)||' '||new.c||' '||typeof(new.c)
+ );
+ END;
+ }
+ list
+ } {}
+}
+do_test alter2-8.2 {
+ execsql {
+ UPDATE t1 SET c = 10 WHERE a = 1;
+ SELECT a, typeof(a), b, typeof(b), c, typeof(c) FROM t1 LIMIT 1;
+ }
+} {1 integer -123 integer 10 text}
+ifcapable trigger {
+ do_test alter2-8.3 {
+ set ::val
+ } {-123 integer 5 text -123 integer 10 text}
+}
+
+#-----------------------------------------------------------------------
+# Test that DELETE trigger tables work with default values, and that when
+# a row is updated the default values are correctly transfered to the
+# new row.
+#
+ifcapable trigger {
+ do_test alter2-9.1 {
+ execsql {
+ CREATE TRIGGER trig2 BEFORE DELETE ON t1 BEGIN
+ SELECT set_val(
+ old.b||' '||typeof(old.b)||' '||old.c||' '||typeof(old.c)
+ );
+ END;
+ }
+ list
+ } {}
+ do_test alter2-9.2 {
+ execsql {
+ DELETE FROM t1 WHERE a = 2;
+ }
+ set ::val
+ } {-123 integer 5 text}
+}
+
+#-----------------------------------------------------------------------
+# Test creating an index on a column added with a default value.
+#
+ifcapable bloblit {
+ do_test alter2-10.1 {
+ execsql {
+ CREATE TABLE t2(a);
+ INSERT INTO t2 VALUES('a');
+ INSERT INTO t2 VALUES('b');
+ INSERT INTO t2 VALUES('c');
+ INSERT INTO t2 VALUES('d');
+ }
+ alter_table t2 {CREATE TABLE t2(a, b DEFAULT X'ABCD', c DEFAULT NULL);} 3
+ catchsql {
+ SELECT * FROM sqlite_master;
+ }
+ execsql {
+ SELECT quote(a), quote(b), quote(c) FROM t2 LIMIT 1;
+ }
+ } {'a' X'ABCD' NULL}
+ do_test alter2-10.2 {
+ execsql {
+ CREATE INDEX i1 ON t2(b);
+ SELECT a FROM t2 WHERE b = X'ABCD';
+ }
+ } {a b c d}
+ do_test alter2-10.3 {
+ execsql {
+ DELETE FROM t2 WHERE a = 'c';
+ SELECT a FROM t2 WHERE b = X'ABCD';
+ }
+ } {a b d}
+ do_test alter2-10.4 {
+ execsql {
+ SELECT count(b) FROM t2 WHERE b = X'ABCD';
+ }
+ } {3}
+}
+
+finish_test