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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 forcedelete 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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