persistentstorage/sqlite3api/TEST/TclScript/insert5.test
changeset 0 08ec8eefde2f
equal deleted inserted replaced
-1:000000000000 0:08ec8eefde2f
       
     1 # 2007 November 23
       
     2 #
       
     3 # The author disclaims copyright to this source code.  In place of
       
     4 # a legal notice, here is a blessing:
       
     5 #
       
     6 #    May you do good and not evil.
       
     7 #    May you find forgiveness for yourself and forgive others.
       
     8 #    May you share freely, never taking more than you give.
       
     9 #
       
    10 #***********************************************************************
       
    11 #
       
    12 # The tests in this file ensure that a temporary table is used
       
    13 # when required by an "INSERT INTO ... SELECT ..." statement.
       
    14 #
       
    15 # $Id: insert5.test,v 1.5 2008/08/04 03:51:24 danielk1977 Exp $
       
    16 
       
    17 set testdir [file dirname $argv0]
       
    18 source $testdir/tester.tcl
       
    19 
       
    20 ifcapable !subquery {
       
    21   finish_test
       
    22   return
       
    23 }
       
    24 
       
    25 # Return true if the compilation of the sql passed as an argument 
       
    26 # includes the opcode OpenEphemeral. An "INSERT INTO ... SELECT"
       
    27 # statement includes such an opcode if a temp-table is used
       
    28 # to store intermediate results.
       
    29 # 
       
    30 proc uses_temp_table {sql} {
       
    31   return [expr {[lsearch [execsql "EXPLAIN $sql"] OpenEphemeral]>=0}]
       
    32 }
       
    33 
       
    34 # Construct the sample database.
       
    35 #
       
    36 do_test insert5-1.0 {
       
    37   file delete -force test2.db test2.db-journal
       
    38   execsql {
       
    39     CREATE TABLE MAIN(Id INTEGER, Id1 INTEGER); 
       
    40     CREATE TABLE B(Id INTEGER, Id1 INTEGER); 
       
    41     CREATE VIEW v1 AS SELECT * FROM B;
       
    42     CREATE VIEW v2 AS SELECT * FROM MAIN;
       
    43     INSERT INTO MAIN(Id,Id1) VALUES(2,3); 
       
    44     INSERT INTO B(Id,Id1) VALUES(2,3); 
       
    45   }
       
    46 } {}
       
    47 
       
    48 # Run the query.
       
    49 #
       
    50 ifcapable compound {
       
    51   do_test insert5-1.1 {
       
    52     execsql {
       
    53       INSERT INTO B 
       
    54         SELECT * FROM B UNION ALL 
       
    55         SELECT * FROM MAIN WHERE exists (select * FROM B WHERE B.Id = MAIN.Id);
       
    56       SELECT * FROM B;
       
    57     }
       
    58   } {2 3 2 3 2 3}
       
    59 } else {
       
    60   do_test insert5-1.1 {
       
    61     execsql {
       
    62       INSERT INTO B SELECT * FROM B;
       
    63       INSERT INTO B
       
    64         SELECT * FROM MAIN WHERE exists (select * FROM B WHERE B.Id = MAIN.Id);
       
    65       SELECT * FROM B;
       
    66     }
       
    67   } {2 3 2 3 2 3}
       
    68 }
       
    69 do_test insert5-2.1 {
       
    70   uses_temp_table { INSERT INTO b SELECT * FROM main }
       
    71 } {0}
       
    72 do_test insert5-2.2 {
       
    73   uses_temp_table { INSERT INTO b SELECT * FROM b }
       
    74 } {1}
       
    75 do_test insert5-2.3 {
       
    76   uses_temp_table { INSERT INTO b SELECT (SELECT id FROM b), id1 FROM main }
       
    77 } {1}
       
    78 do_test insert5-2.4 {
       
    79   uses_temp_table { INSERT INTO b SELECT id1, (SELECT id FROM b) FROM main }
       
    80 } {1}
       
    81 do_test insert5-2.5 {
       
    82   uses_temp_table { 
       
    83     INSERT INTO b 
       
    84       SELECT * FROM main WHERE id = (SELECT id1 FROM b WHERE main.id = b.id) }
       
    85 } {1}
       
    86 do_test insert5-2.6 {
       
    87   uses_temp_table { INSERT INTO b SELECT * FROM v1 }
       
    88 } {1}
       
    89 do_test insert5-2.7 {
       
    90   uses_temp_table { INSERT INTO b SELECT * FROM v2 }
       
    91 } {0}
       
    92 do_test insert5-2.8 {
       
    93   uses_temp_table { 
       
    94     INSERT INTO b 
       
    95     SELECT * FROM main WHERE id > 10 AND max(id1, (SELECT id FROM b)) > 10;
       
    96   }
       
    97 } {1}
       
    98 
       
    99 # UPDATE: Using a column from the outer query (main.id) in the GROUP BY
       
   100 # or ORDER BY of a sub-query is no longer supported.
       
   101 #
       
   102 # do_test insert5-2.9 {
       
   103 #   uses_temp_table { 
       
   104 #     INSERT INTO b 
       
   105 #     SELECT * FROM main 
       
   106 #     WHERE id > 10 AND (SELECT count(*) FROM v2 GROUP BY main.id)
       
   107 #   }
       
   108 # } {}
       
   109 do_test insert5-2.9 {
       
   110   catchsql { 
       
   111     INSERT INTO b 
       
   112     SELECT * FROM main 
       
   113     WHERE id > 10 AND (SELECT count(*) FROM v2 GROUP BY main.id)
       
   114   }
       
   115 } {1 {no such column: main.id}}
       
   116 
       
   117 finish_test