Further tests for compound SELECT statements.
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C Clarify\sthe\sdocumentation\sto\sbetter\sexplain\swhen\san\sautomatic\sre-prepare\scan\nbe\sinduced\sby\srebinding\sparameters.\s\sAdd\sevidence\smarks\sto\sthe\sautomatic\nre-prepare\slogic.
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D 2010-09-14T18:23:00
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C Further\stests\sfor\scompound\sSELECT\sstatements.
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D 2010-09-14T18:56:53
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F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
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F Makefile.in c599a15d268b1db2aeadea19df2adc3bf2eb6bee
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F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
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@ -353,7 +350,7 @@ F test/distinctagg.test 1a6ef9c87a58669438fc771450d7a72577417376
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F test/e_expr.test 164e87c1d7b40ceb47c57c3bffa384c81d009aa7
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F test/e_fkey.test 6721a741c6499b3ab7e5385923233343c8f1ad05
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F test/e_fts3.test 75bb0aee26384ef586165e21018a17f7cd843469
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F test/e_select.test d2c9d044811e93580f5743228a84f9627e7a6756
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F test/e_select.test 64b04eb0de934478d5522c96dc27b3a4f14120f5
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F test/enc.test e54531cd6bf941ee6760be041dff19a104c7acea
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F test/enc2.test 6d91a5286f59add0cfcbb2d0da913b76f2242398
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F test/enc3.test 5c550d59ff31dccdba5d1a02ae11c7047d77c041
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@ -860,14 +857,7 @@ F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
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F tool/speedtest8.c 2902c46588c40b55661e471d7a86e4dd71a18224
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@ -1 +1 @@
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a0f01ebab9bd42fca9ce5d97f8cbf44afd803f4e
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@ -1784,6 +1784,7 @@ drop_all_tables
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do_execsql_test e_select-7.4.0 {
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CREATE TABLE q1(a TEXT, b INTEGER, c);
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CREATE TABLE q2(d NUMBER, e BLOB);
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CREATE TABLE q3(f REAL, g);
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INSERT INTO q1 VALUES(16, -87.66, NULL);
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INSERT INTO q1 VALUES('legible', 94, -42.47);
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@ -1793,41 +1794,191 @@ do_execsql_test e_select-7.4.0 {
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INSERT INTO q2 VALUES('beauty', 2);
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INSERT INTO q2 VALUES(-65.91, 4);
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INSERT INTO q2 VALUES('emanating', -16.56);
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INSERT INTO q2 VALUES(NULL, -22.82);
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INSERT INTO q2 VALUES(7.48, 'example');
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INSERT INTO q3 VALUES('beauty', 2);
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INSERT INTO q3 VALUES('beauty', 2);
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} {}
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foreach {tn select res} {
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1 "SELECT a FROM q1 UNION ALL SELECT d FROM q2"
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{16 legible beauty legible beauty -65.91 emanating {} 7.48}
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1 {SELECT a FROM q1 UNION ALL SELECT d FROM q2}
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{16 legible beauty legible beauty -65.91 emanating}
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2 "SELECT * FROM q1 WHERE a=16 UNION ALL SELECT 'x', * FROM q2 WHERE oid=1"
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2 {SELECT * FROM q1 WHERE a=16 UNION ALL SELECT 'x', * FROM q2 WHERE oid=1}
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{16 -87.66 {} x legible 1}
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3 "SELECT count(*) FROM q1 UNION ALL SELECT min(e) FROM q2" {3 -22.82}
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3 {SELECT count(*) FROM q1 UNION ALL SELECT min(e) FROM q2}
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{3 -16.56}
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4 {SELECT * FROM q2 UNION ALL SELECT * FROM q3}
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{legible 1 beauty 2 -65.91 4 emanating -16.56 beauty 2 beauty 2}
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} {
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do_execsql_test e_select-7.4.$tn $select [list {*}$res]
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}
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# EVIDENCE-OF: R-20560-39162 The UNION operator works the same way as
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# UNION ALL, except that duplicate rows are removed from the final
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# result set.
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#
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foreach {tn select res} {
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1 {SELECT a FROM q1 UNION SELECT d FROM q2}
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{-65.91 16 beauty emanating legible}
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2 {SELECT * FROM q1 WHERE a=16 UNION SELECT 'x', * FROM q2 WHERE oid=1}
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{16 -87.66 {} x legible 1}
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3 {SELECT count(*) FROM q1 UNION SELECT min(e) FROM q2}
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{-16.56 3}
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4 {SELECT * FROM q2 UNION SELECT * FROM q3}
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{-65.91 4 beauty 2 emanating -16.56 legible 1}
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} {
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do_execsql_test e_select-7.5.$tn $select [list {*}$res]
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}
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# EVIDENCE-OF: R-45764-31737 The INTERSECT operator returns the
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# intersection of the results of the left and right SELECTs.
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#
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foreach {tn select res} {
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1 {SELECT a FROM q1 INTERSECT SELECT d FROM q2} {beauty legible}
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2 {SELECT * FROM q2 INTERSECT SELECT * FROM q3} {beauty 2}
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} {
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do_execsql_test e_select-7.6.$tn $select [list {*}$res]
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}
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# EVIDENCE-OF: R-25787-28949 The EXCEPT operator returns the subset of
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# rows returned by the left SELECT that are not also returned by the
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# right-hand SELECT.
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#
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foreach {tn select res} {
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1 {SELECT a FROM q1 EXCEPT SELECT d FROM q2} {16}
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2 {SELECT * FROM q2 EXCEPT SELECT * FROM q3}
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{-65.91 4 emanating -16.56 legible 1}
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} {
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do_execsql_test e_select-7.7.$tn $select [list {*}$res]
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}
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# EVIDENCE-OF: R-40729-56447 Duplicate rows are removed from the results
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# of INTERSECT and EXCEPT operators before the result set is returned.
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#
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foreach {tn select res} {
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0 {SELECT * FROM q3} {beauty 2 beauty 2}
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1 {SELECT * FROM q3 INTERSECT SELECT * FROM q3} {beauty 2}
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2 {SELECT * FROM q3 EXCEPT SELECT a,b FROM q1} {beauty 2}
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} {
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do_execsql_test e_select-7.8.$tn $select [list {*}$res]
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}
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# EVIDENCE-OF: R-46765-43362 For the purposes of determining duplicate
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# rows for the results of compound SELECT operators, NULL values are
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# considered equal to other NULL values and distinct from all non-NULL
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# values.
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#
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db nullvalue null
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foreach {tn select res} {
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1 {SELECT NULL UNION ALL SELECT NULL} {null null}
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2 {SELECT NULL UNION SELECT NULL} {null}
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3 {SELECT NULL INTERSECT SELECT NULL} {null}
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4 {SELECT NULL EXCEPT SELECT NULL} {}
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5 {SELECT NULL UNION ALL SELECT 'ab'} {null ab}
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6 {SELECT NULL UNION SELECT 'ab'} {null ab}
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7 {SELECT NULL INTERSECT SELECT 'ab'} {}
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8 {SELECT NULL EXCEPT SELECT 'ab'} {null}
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9 {SELECT NULL UNION ALL SELECT 0} {null 0}
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10 {SELECT NULL UNION SELECT 0} {null 0}
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11 {SELECT NULL INTERSECT SELECT 0} {}
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12 {SELECT NULL EXCEPT SELECT 0} {null}
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13 {SELECT c FROM q1 UNION ALL SELECT g FROM q3} {null -42.47 null 2 2}
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14 {SELECT c FROM q1 UNION SELECT g FROM q3} {null -42.47 2}
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15 {SELECT c FROM q1 INTERSECT SELECT g FROM q3} {}
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16 {SELECT c FROM q1 EXCEPT SELECT g FROM q3} {null -42.47}
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} {
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do_execsql_test e_select-7.9.$tn $select [list {*}$res]
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}
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db nullvalue {}
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# EVIDENCE-OF: R-51232-50224 The collation sequence used to compare two
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# text values is determined as if the columns of the left and right-hand
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# SELECT statements were the left and right-hand operands of the equals
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# (=) operator, except that greater precedence is not assigned to a
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# collation sequence specified with the postfix COLLATE operator.
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#
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drop_all_tables
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do_execsql_test e_select-7.10.0 {
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CREATE TABLE y1(a COLLATE nocase, b COLLATE binary, c);
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INSERT INTO y1 VALUES('Abc', 'abc', 'aBC');
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} {}
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foreach {tn select res} {
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1 {SELECT 'abc' UNION SELECT 'ABC'} {ABC abc}
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2 {SELECT 'abc' COLLATE nocase UNION SELECT 'ABC'} {ABC}
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3 {SELECT 'abc' UNION SELECT 'ABC' COLLATE nocase} {ABC}
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4 {SELECT 'abc' COLLATE binary UNION SELECT 'ABC' COLLATE nocase} {ABC abc}
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5 {SELECT 'abc' COLLATE nocase UNION SELECT 'ABC' COLLATE binary} {ABC}
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6 {SELECT a FROM y1 UNION SELECT b FROM y1} {abc}
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7 {SELECT b FROM y1 UNION SELECT a FROM y1} {Abc abc}
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8 {SELECT a FROM y1 UNION SELECT c FROM y1} {aBC}
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9 {SELECT a FROM y1 UNION SELECT c COLLATE binary FROM y1} {aBC}
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} {
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do_execsql_test e_select-7.10.$tn $select [list {*}$res]
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}
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# EVIDENCE-OF: R-32706-07403 No affinity transformations are applied to
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# any values when comparing rows as part of a compound SELECT.
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#
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drop_all_tables
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do_execsql_test e_select-7.10.0 {
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CREATE TABLE w1(a TEXT, b NUMBER);
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CREATE TABLE w2(a, b TEXT);
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INSERT INTO w1 VALUES('1', 4.1);
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INSERT INTO w2 VALUES(1, 4.1);
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} {}
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foreach {tn select res} {
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1 { SELECT a FROM w1 UNION SELECT a FROM w2 } {1 1}
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2 { SELECT a FROM w2 UNION SELECT a FROM w1 } {1 1}
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3 { SELECT b FROM w1 UNION SELECT b FROM w2 } {4.1 4.1}
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4 { SELECT b FROM w2 UNION SELECT b FROM w1 } {4.1 4.1}
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5 { SELECT a FROM w1 INTERSECT SELECT a FROM w2 } {}
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6 { SELECT a FROM w2 INTERSECT SELECT a FROM w1 } {}
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7 { SELECT b FROM w1 INTERSECT SELECT b FROM w2 } {}
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8 { SELECT b FROM w2 INTERSECT SELECT b FROM w1 } {}
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9 { SELECT a FROM w1 EXCEPT SELECT a FROM w2 } {1}
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10 { SELECT a FROM w2 EXCEPT SELECT a FROM w1 } {1}
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11 { SELECT b FROM w1 EXCEPT SELECT b FROM w2 } {4.1}
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12 { SELECT b FROM w2 EXCEPT SELECT b FROM w1 } {4.1}
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} {
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do_execsql_test e_select-7.11.$tn $select [list {*}$res]
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}
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# EVIDENCE-OF: R-32562-20566 When three or more simple SELECTs are
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# connected into a compound SELECT, they group from left to right. In
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# other words, if "A", "B" and "C" are all simple SELECT statements, (A
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# op B op C) is processed as ((A op B) op C).
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#
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# e_select-7.X.1: Precedence of UNION vs. INTERSECT
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# e_select-7.X.2: Precedence of UNION vs. UNION ALL
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# e_select-7.X.3: Precedence of UNION vs. EXCEPT
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# e_select-7.X.4: Precedence of INTERSECT vs. UNION ALL
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# e_select-7.X.5: Precedence of INTERSECT vs. EXCEPT
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# e_select-7.X.6: Precedence of UNION ALL vs. EXCEPT
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# e_select-7.X.7: Check that "a EXCEPT b EXCEPT c" is processed as
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# e_select-7.12.1: Precedence of UNION vs. INTERSECT
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# e_select-7.12.2: Precedence of UNION vs. UNION ALL
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# e_select-7.12.3: Precedence of UNION vs. EXCEPT
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# e_select-7.12.4: Precedence of INTERSECT vs. UNION ALL
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# e_select-7.12.5: Precedence of INTERSECT vs. EXCEPT
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# e_select-7.12.6: Precedence of UNION ALL vs. EXCEPT
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# e_select-7.12.7: Check that "a EXCEPT b EXCEPT c" is processed as
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# "(a EXCEPT b) EXCEPT c".
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#
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# The INTERSECT and EXCEPT operations are mutually commutative. So
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# the e_select-7.X.5 test cases do not prove very much.
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# the e_select-7.12.5 test cases do not prove very much.
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#
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drop_all_tables
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do_execsql_test e_select-7.X.0 {
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do_execsql_test e_select-7.12.0 {
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CREATE TABLE t1(x);
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INSERT INTO t1 VALUES(1);
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INSERT INTO t1 VALUES(2);
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@ -1855,7 +2006,7 @@ foreach {tn select res} {
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7 "(2,3) EXCEPT (2) EXCEPT (3)" {}
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} {
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set select [string map {( {SELECT x FROM t1 WHERE x IN (}} $select]
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do_execsql_test e_select-7.X.$tn $select [list {*}$res]
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do_execsql_test e_select-7.12.$tn $select [list {*}$res]
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}
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finish_test
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