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148 lines
4.8 KiB
Plaintext
148 lines
4.8 KiB
Plaintext
# 2019-09-21
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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# This file implements regression tests for SQLite library.
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#
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# Specifically, it tests cases where the expressions in a GROUP BY
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# clause are the same as those in the ORDER BY clause.
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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set ::testprefix orderbyA
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proc do_sortcount_test {tn sql cnt res} {
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set eqp [execsql "EXPLAIN QUERY PLAN $sql"]
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set rcnt [regexp -all {USE TEMP} $eqp]
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uplevel [list do_test $tn.1 [list set {} $rcnt] $cnt]
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uplevel [list do_execsql_test $tn.2 $sql $res]
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}
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do_execsql_test 1.0 {
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CREATE TABLE t1(a, b, c);
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INSERT INTO t1 VALUES('one', 1, 11);
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INSERT INTO t1 VALUES('three', 7, 11);
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INSERT INTO t1 VALUES('one', 2, 11);
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INSERT INTO t1 VALUES('one', 3, 11);
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INSERT INTO t1 VALUES('two', 4, 11);
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INSERT INTO t1 VALUES('two', 6, 11);
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INSERT INTO t1 VALUES('three', 8, 11);
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INSERT INTO t1 VALUES('two', 5, 11);
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INSERT INTO t1 VALUES('three', 9, 11);
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}
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foreach {tn idx} {
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1 {}
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2 {CREATE INDEX i1 ON t1(a)}
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3 {CREATE INDEX i1 ON t1(a DESC)}
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} {
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execsql { DROP INDEX IF EXISTS i1 }
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execsql $idx
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# $match is the number of temp-table sorts we expect if the GROUP BY
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# can use the same sort order as the ORDER BY. $nomatch is the number
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# of expected sorts if the GROUP BY and ORDER BY are not compatible.
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set match 1
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set nomatch 2
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if {$tn>=2} {
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set match 0
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set nomatch 1
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}
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do_sortcount_test 1.$tn.1.1 {
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SELECT a, sum(b) FROM t1 GROUP BY a ORDER BY a
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} $match {one 6 three 24 two 15}
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do_sortcount_test 1.$tn.1.2 {
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SELECT a, sum(b) FROM t1 GROUP BY a ORDER BY a DESC
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} $match {two 15 three 24 one 6}
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do_sortcount_test 1.$tn.2.1 {
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SELECT a, sum(b) FROM t1 GROUP BY a ORDER BY a||''
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} $nomatch {one 6 three 24 two 15}
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do_sortcount_test 1.$tn.2.2 {
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SELECT a, sum(b) FROM t1 GROUP BY a ORDER BY a||'' DESC
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} $nomatch {two 15 three 24 one 6}
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do_sortcount_test 1.$tn.3.1 {
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SELECT a, sum(b) FROM t1 GROUP BY a ORDER BY a NULLS LAST
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} $nomatch {one 6 three 24 two 15}
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do_sortcount_test 1.$tn.3.2 {
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SELECT a, sum(b) FROM t1 GROUP BY a ORDER BY a DESC NULLS FIRST
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} $nomatch {two 15 three 24 one 6}
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}
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#-------------------------------------------------------------------------
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do_execsql_test 2.0 {
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CREATE TABLE t2(a, b, c);
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INSERT INTO t2 VALUES(1, 'one', 1);
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INSERT INTO t2 VALUES(1, 'two', 2);
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INSERT INTO t2 VALUES(1, 'one', 3);
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INSERT INTO t2 VALUES(1, 'two', 4);
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INSERT INTO t2 VALUES(1, 'one', 5);
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INSERT INTO t2 VALUES(1, 'two', 6);
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INSERT INTO t2 VALUES(2, 'one', 7);
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INSERT INTO t2 VALUES(2, 'two', 8);
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INSERT INTO t2 VALUES(2, 'one', 9);
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INSERT INTO t2 VALUES(2, 'two', 10);
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INSERT INTO t2 VALUES(2, 'one', 11);
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INSERT INTO t2 VALUES(2, 'two', 12);
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INSERT INTO t2 VALUES(NULL, 'one', 13);
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INSERT INTO t2 VALUES(NULL, 'two', 14);
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INSERT INTO t2 VALUES(NULL, 'one', 15);
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INSERT INTO t2 VALUES(NULL, 'two', 16);
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INSERT INTO t2 VALUES(NULL, 'one', 17);
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INSERT INTO t2 VALUES(NULL, 'two', 18);
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}
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foreach {tn idx} {
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1 {}
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2 { CREATE INDEX i2 ON t2(a, b) }
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3 { CREATE INDEX i2 ON t2(a DESC, b DESC) }
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4 { CREATE INDEX i2 ON t2(a, b DESC) }
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5 { CREATE INDEX i2 ON t2(a DESC, b) }
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} {
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execsql { DROP INDEX IF EXISTS i2 }
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execsql $idx
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set nSort [expr ($tn==2 || $tn==3) ? 0 : 1]
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do_sortcount_test 2.$tn.1.1 {
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SELECT a, b, sum(c) FROM t2 GROUP BY a, b ORDER BY a, b;
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} $nSort {{} one 45 {} two 48 1 one 9 1 two 12 2 one 27 2 two 30}
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do_sortcount_test 2.$tn.1.2 {
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SELECT a, b, sum(c) FROM t2 GROUP BY a, b ORDER BY a DESC, b DESC;
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} $nSort {2 two 30 2 one 27 1 two 12 1 one 9 {} two 48 {} one 45}
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set nSort [expr ($tn==4 || $tn==5) ? 0 : 1]
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do_sortcount_test 2.$tn.2.1 {
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SELECT a, b, sum(c) FROM t2 GROUP BY a, b ORDER BY a, b DESC;
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} $nSort { {} two 48 {} one 45 1 two 12 1 one 9 2 two 30 2 one 27 }
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do_sortcount_test 2.$tn.2.2 {
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SELECT a, b, sum(c) FROM t2 GROUP BY a, b ORDER BY a DESC, b;
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} $nSort { 2 one 27 2 two 30 1 one 9 1 two 12 {} one 45 {} two 48 }
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# ORDER BY can never piggyback on the GROUP BY sort if it uses
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# non-standard NULLS behaviour.
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set nSort [expr $tn==1 ? 2 : 1]
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do_sortcount_test 2.$tn.3.1 {
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SELECT a, b, sum(c) FROM t2 GROUP BY a, b ORDER BY a, b DESC NULLS FIRST;
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} $nSort { {} two 48 {} one 45 1 two 12 1 one 9 2 two 30 2 one 27 }
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do_sortcount_test 2.$tn.3.2 {
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SELECT a, b, sum(c) FROM t2 GROUP BY a, b ORDER BY a DESC, b NULLS LAST;
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} $nSort { 2 one 27 2 two 30 1 one 9 1 two 12 {} one 45 {} two 48 }
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}
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finish_test
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