| # 2001 September 15 |
| # |
| # The author disclaims copyright to this source code. In place of |
| # a legal notice, here is a blessing: |
| # |
| # May you do good and not evil. |
| # May you find forgiveness for yourself and forgive others. |
| # May you share freely, never taking more than you give. |
| # |
| #*********************************************************************** |
| # This file implements regression tests for SQLite library. The |
| # focus of this file is testing aggregate functions and the |
| # GROUP BY and HAVING clauses of SELECT statements. |
| # |
| # $Id: select5.test,v 1.20 2008/08/21 14:15:59 drh Exp $ |
| |
| set testdir [file dirname $argv0] |
| source $testdir/tester.tcl |
| |
| # Build some test data |
| # |
| execsql { |
| CREATE TABLE t1(x int, y int); |
| BEGIN; |
| } |
| for {set i 1} {$i<32} {incr i} { |
| for {set j 0} {(1<<$j)<$i} {incr j} {} |
| execsql "INSERT INTO t1 VALUES([expr {32-$i}],[expr {10-$j}])" |
| } |
| execsql { |
| COMMIT |
| } |
| |
| do_test select5-1.0 { |
| execsql {SELECT DISTINCT y FROM t1 ORDER BY y} |
| } {5 6 7 8 9 10} |
| |
| # Sort by an aggregate function. |
| # |
| do_test select5-1.1 { |
| execsql {SELECT y, count(*) FROM t1 GROUP BY y ORDER BY y} |
| } {5 15 6 8 7 4 8 2 9 1 10 1} |
| do_test select5-1.2 { |
| execsql {SELECT y, count(*) FROM t1 GROUP BY y ORDER BY count(*), y} |
| } {9 1 10 1 8 2 7 4 6 8 5 15} |
| do_test select5-1.3 { |
| execsql {SELECT count(*), y FROM t1 GROUP BY y ORDER BY count(*), y} |
| } {1 9 1 10 2 8 4 7 8 6 15 5} |
| |
| # Some error messages associated with aggregates and GROUP BY |
| # |
| do_test select5-2.1.1 { |
| catchsql { |
| SELECT y, count(*) FROM t1 GROUP BY z ORDER BY y |
| } |
| } {1 {no such column: z}} |
| do_test select5-2.1.2 { |
| catchsql { |
| SELECT y, count(*) FROM t1 GROUP BY temp.t1.y ORDER BY y |
| } |
| } {1 {no such column: temp.t1.y}} |
| do_test select5-2.2 { |
| set v [catch {execsql { |
| SELECT y, count(*) FROM t1 GROUP BY z(y) ORDER BY y |
| }} msg] |
| lappend v $msg |
| } {1 {no such function: z}} |
| do_test select5-2.3 { |
| set v [catch {execsql { |
| SELECT y, count(*) FROM t1 GROUP BY y HAVING count(*)<3 ORDER BY y |
| }} msg] |
| lappend v $msg |
| } {0 {8 2 9 1 10 1}} |
| do_test select5-2.4 { |
| set v [catch {execsql { |
| SELECT y, count(*) FROM t1 GROUP BY y HAVING z(y)<3 ORDER BY y |
| }} msg] |
| lappend v $msg |
| } {1 {no such function: z}} |
| do_test select5-2.5 { |
| set v [catch {execsql { |
| SELECT y, count(*) FROM t1 GROUP BY y HAVING count(*)<z ORDER BY y |
| }} msg] |
| lappend v $msg |
| } {1 {no such column: z}} |
| |
| # Get the Agg function to rehash in vdbe.c |
| # |
| do_test select5-3.1 { |
| execsql { |
| SELECT x, count(*), avg(y) FROM t1 GROUP BY x HAVING x<4 ORDER BY x |
| } |
| } {1 1 5.0 2 1 5.0 3 1 5.0} |
| |
| # Run various aggregate functions when the count is zero. |
| # |
| do_test select5-4.1 { |
| execsql { |
| SELECT avg(x) FROM t1 WHERE x>100 |
| } |
| } {{}} |
| do_test select5-4.2 { |
| execsql { |
| SELECT count(x) FROM t1 WHERE x>100 |
| } |
| } {0} |
| do_test select5-4.3 { |
| execsql { |
| SELECT min(x) FROM t1 WHERE x>100 |
| } |
| } {{}} |
| do_test select5-4.4 { |
| execsql { |
| SELECT max(x) FROM t1 WHERE x>100 |
| } |
| } {{}} |
| do_test select5-4.5 { |
| execsql { |
| SELECT sum(x) FROM t1 WHERE x>100 |
| } |
| } {{}} |
| |
| # Some tests for queries with a GROUP BY clause but no aggregate functions. |
| # |
| # Note: The query in test cases 5.1 through 5.5 are not legal SQL. So if the |
| # implementation changes in the future and it returns different results, |
| # this is not such a big deal. |
| # |
| do_test select5-5.1 { |
| execsql { |
| CREATE TABLE t2(a, b, c); |
| INSERT INTO t2 VALUES(1, 2, 3); |
| INSERT INTO t2 VALUES(1, 4, 5); |
| INSERT INTO t2 VALUES(6, 4, 7); |
| CREATE INDEX t2_idx ON t2(a); |
| } |
| } {} |
| do_test select5-5.2 { |
| execsql { |
| SELECT a FROM t2 GROUP BY a; |
| } |
| } {1 6} |
| do_test select5-5.3 { |
| execsql { |
| SELECT a FROM t2 WHERE a>2 GROUP BY a; |
| } |
| } {6} |
| do_test select5-5.4 { |
| execsql { |
| SELECT a, b FROM t2 GROUP BY a, b; |
| } |
| } {1 2 1 4 6 4} |
| do_test select5-5.5 { |
| execsql { |
| SELECT a, b FROM t2 GROUP BY a; |
| } |
| } {1 4 6 4} |
| |
| # Test rendering of columns for the GROUP BY clause. |
| # |
| do_test select5-5.11 { |
| execsql { |
| SELECT max(c), b*a, b, a FROM t2 GROUP BY b*a, b, a |
| } |
| } {3 2 2 1 5 4 4 1 7 24 4 6} |
| |
| # NULL compare equal to each other for the purposes of processing |
| # the GROUP BY clause. |
| # |
| do_test select5-6.1 { |
| execsql { |
| CREATE TABLE t3(x,y); |
| INSERT INTO t3 VALUES(1,NULL); |
| INSERT INTO t3 VALUES(2,NULL); |
| INSERT INTO t3 VALUES(3,4); |
| SELECT count(x), y FROM t3 GROUP BY y ORDER BY 1 |
| } |
| } {1 4 2 {}} |
| do_test select5-6.2 { |
| execsql { |
| CREATE TABLE t4(x,y,z); |
| INSERT INTO t4 VALUES(1,2,NULL); |
| INSERT INTO t4 VALUES(2,3,NULL); |
| INSERT INTO t4 VALUES(3,NULL,5); |
| INSERT INTO t4 VALUES(4,NULL,6); |
| INSERT INTO t4 VALUES(4,NULL,6); |
| INSERT INTO t4 VALUES(5,NULL,NULL); |
| INSERT INTO t4 VALUES(5,NULL,NULL); |
| INSERT INTO t4 VALUES(6,7,8); |
| SELECT max(x), count(x), y, z FROM t4 GROUP BY y, z ORDER BY 1 |
| } |
| } {1 1 2 {} 2 1 3 {} 3 1 {} 5 4 2 {} 6 5 2 {} {} 6 1 7 8} |
| |
| do_test select5-7.2 { |
| execsql { |
| SELECT count(*), count(x) as cnt FROM t4 GROUP BY y ORDER BY cnt; |
| } |
| } {1 1 1 1 1 1 5 5} |
| |
| # See ticket #3324. |
| # |
| do_test select5-8.1 { |
| execsql { |
| CREATE TABLE t8a(a,b); |
| CREATE TABLE t8b(x); |
| INSERT INTO t8a VALUES('one', 1); |
| INSERT INTO t8a VALUES('one', 2); |
| INSERT INTO t8a VALUES('two', 3); |
| INSERT INTO t8a VALUES('one', NULL); |
| INSERT INTO t8b(rowid,x) VALUES(1,111); |
| INSERT INTO t8b(rowid,x) VALUES(2,222); |
| INSERT INTO t8b(rowid,x) VALUES(3,333); |
| SELECT a, count(b) FROM t8a, t8b WHERE b=t8b.rowid GROUP BY a ORDER BY a; |
| } |
| } {one 2 two 1} |
| do_test select5-8.2 { |
| execsql { |
| SELECT a, count(b) FROM t8a, t8b WHERE b=+t8b.rowid GROUP BY a ORDER BY a; |
| } |
| } {one 2 two 1} |
| do_test select5-8.3 { |
| execsql { |
| SELECT t8a.a, count(t8a.b) FROM t8a, t8b WHERE t8a.b=t8b.rowid |
| GROUP BY 1 ORDER BY 1; |
| } |
| } {one 2 two 1} |
| do_test select5-8.4 { |
| execsql { |
| SELECT a, count(*) FROM t8a, t8b WHERE b=+t8b.rowid GROUP BY a ORDER BY a; |
| } |
| } {one 2 two 1} |
| do_test select5-8.5 { |
| execsql { |
| SELECT a, count(b) FROM t8a, t8b WHERE b<x GROUP BY a ORDER BY a; |
| } |
| } {one 6 two 3} |
| do_test select5-8.6 { |
| execsql { |
| SELECT a, count(t8a.b) FROM t8a, t8b WHERE b=t8b.rowid |
| GROUP BY a ORDER BY 2; |
| } |
| } {two 1 one 2} |
| do_test select5-8.7 { |
| execsql { |
| SELECT a, count(b) FROM t8a, t8b GROUP BY a ORDER BY 2; |
| } |
| } {two 3 one 6} |
| do_test select5-8.8 { |
| execsql { |
| SELECT a, count(*) FROM t8a, t8b GROUP BY a ORDER BY 2; |
| } |
| } {two 3 one 9} |
| |
| |
| |
| |
| finish_test |