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| 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 |
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