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