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496 lines
11 KiB
Plaintext
496 lines
11 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 UNION, INTERSECT and EXCEPT operators
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# in SELECT statements.
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#
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# $Id: select4.test,v 1.16 2004/05/27 17:22:56 drh Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# Build some test data
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#
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execsql {
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CREATE TABLE t1(n int, log int);
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BEGIN;
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}
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for {set i 1} {$i<32} {incr i} {
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for {set j 0} {pow(2,$j)<$i} {incr j} {}
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execsql "INSERT INTO t1 VALUES($i,$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 select4-1.0 {
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execsql {SELECT DISTINCT log FROM t1 ORDER BY log}
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} {0 1 2 3 4 5}
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# Union All operator
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#
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do_test select4-1.1a {
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lsort [execsql {SELECT DISTINCT log FROM t1}]
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} {0 1 2 3 4 5}
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do_test select4-1.1b {
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lsort [execsql {SELECT n FROM t1 WHERE log=3}]
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} {5 6 7 8}
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do_test select4-1.1c {
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execsql {
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SELECT DISTINCT log FROM t1
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UNION ALL
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SELECT n FROM t1 WHERE log=3
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ORDER BY log;
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}
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} {0 1 2 3 4 5 5 6 7 8}
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do_test select4-1.1d {
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execsql {
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CREATE TABLE t2 AS
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SELECT DISTINCT log FROM t1
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UNION ALL
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SELECT n FROM t1 WHERE log=3
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ORDER BY log;
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SELECT * FROM t2;
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}
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} {0 1 2 3 4 5 5 6 7 8}
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execsql {DROP TABLE t2}
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do_test select4-1.1e {
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execsql {
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CREATE TABLE t2 AS
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SELECT DISTINCT log FROM t1
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UNION ALL
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SELECT n FROM t1 WHERE log=3
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ORDER BY log DESC;
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SELECT * FROM t2;
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}
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} {8 7 6 5 5 4 3 2 1 0}
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execsql {DROP TABLE t2}
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do_test select4-1.1f {
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execsql {
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SELECT DISTINCT log FROM t1
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UNION ALL
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SELECT n FROM t1 WHERE log=2
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}
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} {0 1 2 3 4 5 3 4}
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do_test select4-1.1g {
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execsql {
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CREATE TABLE t2 AS
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SELECT DISTINCT log FROM t1
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UNION ALL
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SELECT n FROM t1 WHERE log=2;
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SELECT * FROM t2;
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}
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} {0 1 2 3 4 5 3 4}
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execsql {DROP TABLE t2}
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do_test select4-1.2 {
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execsql {
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SELECT log FROM t1 WHERE n IN
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(SELECT DISTINCT log FROM t1 UNION ALL
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SELECT n FROM t1 WHERE log=3)
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ORDER BY log;
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}
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} {0 1 2 2 3 3 3 3}
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do_test select4-1.3 {
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set v [catch {execsql {
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SELECT DISTINCT log FROM t1 ORDER BY log
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UNION ALL
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SELECT n FROM t1 WHERE log=3
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ORDER BY log;
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}} msg]
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lappend v $msg
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} {1 {ORDER BY clause should come after UNION ALL not before}}
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# Union operator
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#
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do_test select4-2.1 {
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execsql {
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SELECT DISTINCT log FROM t1
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UNION
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SELECT n FROM t1 WHERE log=3
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ORDER BY log;
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}
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} {0 1 2 3 4 5 6 7 8}
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do_test select4-2.2 {
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execsql {
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SELECT log FROM t1 WHERE n IN
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(SELECT DISTINCT log FROM t1 UNION
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SELECT n FROM t1 WHERE log=3)
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ORDER BY log;
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}
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} {0 1 2 2 3 3 3 3}
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do_test select4-2.3 {
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set v [catch {execsql {
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SELECT DISTINCT log FROM t1 ORDER BY log
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UNION
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SELECT n FROM t1 WHERE log=3
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ORDER BY log;
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}} msg]
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lappend v $msg
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} {1 {ORDER BY clause should come after UNION not before}}
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# Except operator
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#
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do_test select4-3.1.1 {
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execsql {
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SELECT DISTINCT log FROM t1
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EXCEPT
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SELECT n FROM t1 WHERE log=3
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ORDER BY log;
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}
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} {0 1 2 3 4}
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do_test select4-3.1.2 {
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execsql {
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CREATE TABLE t2 AS
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SELECT DISTINCT log FROM t1
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EXCEPT
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SELECT n FROM t1 WHERE log=3
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ORDER BY log;
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SELECT * FROM t2;
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}
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} {0 1 2 3 4}
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execsql {DROP TABLE t2}
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do_test select4-3.1.3 {
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execsql {
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CREATE TABLE t2 AS
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SELECT DISTINCT log FROM t1
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EXCEPT
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SELECT n FROM t1 WHERE log=3
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ORDER BY log DESC;
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SELECT * FROM t2;
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}
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} {4 3 2 1 0}
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execsql {DROP TABLE t2}
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do_test select4-3.2 {
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execsql {
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SELECT log FROM t1 WHERE n IN
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(SELECT DISTINCT log FROM t1 EXCEPT
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SELECT n FROM t1 WHERE log=3)
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ORDER BY log;
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}
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} {0 1 2 2}
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do_test select4-3.3 {
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set v [catch {execsql {
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SELECT DISTINCT log FROM t1 ORDER BY log
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EXCEPT
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SELECT n FROM t1 WHERE log=3
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ORDER BY log;
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}} msg]
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lappend v $msg
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} {1 {ORDER BY clause should come after EXCEPT not before}}
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# Intersect operator
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#
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do_test select4-4.1.1 {
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execsql {
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SELECT DISTINCT log FROM t1
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INTERSECT
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SELECT n FROM t1 WHERE log=3
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ORDER BY log;
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}
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} {5}
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do_test select4-4.1.2 {
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execsql {
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SELECT DISTINCT log FROM t1 UNION ALL SELECT 6
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INTERSECT
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SELECT n FROM t1 WHERE log=3
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ORDER BY log;
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}
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} {5 6}
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do_test select4-4.1.3 {
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execsql {
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CREATE TABLE t2 AS
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SELECT DISTINCT log FROM t1 UNION ALL SELECT 6
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INTERSECT
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SELECT n FROM t1 WHERE log=3
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ORDER BY log;
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SELECT * FROM t2;
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}
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} {5 6}
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execsql {DROP TABLE t2}
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do_test select4-4.1.4 {
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execsql {
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CREATE TABLE t2 AS
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SELECT DISTINCT log FROM t1 UNION ALL SELECT 6
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INTERSECT
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SELECT n FROM t1 WHERE log=3
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ORDER BY log DESC;
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SELECT * FROM t2;
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}
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} {6 5}
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execsql {DROP TABLE t2}
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do_test select4-4.2 {
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execsql {
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SELECT log FROM t1 WHERE n IN
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(SELECT DISTINCT log FROM t1 INTERSECT
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SELECT n FROM t1 WHERE log=3)
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ORDER BY log;
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}
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} {3}
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do_test select4-4.3 {
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set v [catch {execsql {
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SELECT DISTINCT log FROM t1 ORDER BY log
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INTERSECT
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SELECT n FROM t1 WHERE log=3
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ORDER BY log;
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}} msg]
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lappend v $msg
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} {1 {ORDER BY clause should come after INTERSECT not before}}
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# Various error messages while processing UNION or INTERSECT
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#
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do_test select4-5.1 {
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set v [catch {execsql {
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SELECT DISTINCT log FROM t2
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UNION ALL
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SELECT n FROM t1 WHERE log=3
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ORDER BY log;
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}} msg]
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lappend v $msg
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} {1 {no such table: t2}}
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do_test select4-5.2 {
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set v [catch {execsql {
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SELECT DISTINCT log AS "xyzzy" FROM t1
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UNION ALL
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SELECT n FROM t1 WHERE log=3
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ORDER BY xyzzy;
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}} msg]
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lappend v $msg
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} {0 {0 1 2 3 4 5 5 6 7 8}}
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do_test select4-5.2b {
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set v [catch {execsql {
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SELECT DISTINCT log AS xyzzy FROM t1
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UNION ALL
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SELECT n FROM t1 WHERE log=3
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ORDER BY 'xyzzy';
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}} msg]
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lappend v $msg
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} {0 {0 1 2 3 4 5 5 6 7 8}}
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do_test select4-5.2c {
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set v [catch {execsql {
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SELECT DISTINCT log FROM t1
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UNION ALL
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SELECT n FROM t1 WHERE log=3
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ORDER BY 'xyzzy';
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}} msg]
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lappend v $msg
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} {1 {ORDER BY term number 1 does not match any result column}}
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do_test select4-5.2d {
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set v [catch {execsql {
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SELECT DISTINCT log FROM t1
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INTERSECT
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SELECT n FROM t1 WHERE log=3
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ORDER BY 'xyzzy';
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}} msg]
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lappend v $msg
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} {1 {ORDER BY term number 1 does not match any result column}}
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do_test select4-5.2e {
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set v [catch {execsql {
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SELECT DISTINCT log FROM t1
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UNION ALL
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SELECT n FROM t1 WHERE log=3
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ORDER BY n;
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}} msg]
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lappend v $msg
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} {0 {0 1 2 3 4 5 5 6 7 8}}
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do_test select4-5.2f {
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catchsql {
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SELECT DISTINCT log FROM t1
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UNION ALL
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SELECT n FROM t1 WHERE log=3
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ORDER BY log;
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}
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} {0 {0 1 2 3 4 5 5 6 7 8}}
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do_test select4-5.2g {
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catchsql {
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SELECT DISTINCT log FROM t1
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UNION ALL
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SELECT n FROM t1 WHERE log=3
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ORDER BY 1;
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}
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} {0 {0 1 2 3 4 5 5 6 7 8}}
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do_test select4-5.2h {
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catchsql {
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SELECT DISTINCT log FROM t1
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UNION ALL
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SELECT n FROM t1 WHERE log=3
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ORDER BY 2;
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}
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} {1 {ORDER BY position 2 should be between 1 and 1}}
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do_test select4-5.2i {
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catchsql {
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SELECT DISTINCT 1, log FROM t1
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UNION ALL
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SELECT 2, n FROM t1 WHERE log=3
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ORDER BY 2, 1;
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}
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} {0 {1 0 1 1 1 2 1 3 1 4 1 5 2 5 2 6 2 7 2 8}}
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do_test select4-5.2j {
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catchsql {
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SELECT DISTINCT 1, log FROM t1
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UNION ALL
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SELECT 2, n FROM t1 WHERE log=3
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ORDER BY 1, 2 DESC;
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}
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} {0 {1 5 1 4 1 3 1 2 1 1 1 0 2 8 2 7 2 6 2 5}}
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do_test select4-5.2k {
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catchsql {
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SELECT DISTINCT 1, log FROM t1
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UNION ALL
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SELECT 2, n FROM t1 WHERE log=3
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ORDER BY n, 1;
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}
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} {0 {1 0 1 1 1 2 1 3 1 4 1 5 2 5 2 6 2 7 2 8}}
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do_test select4-5.3 {
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set v [catch {execsql {
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SELECT DISTINCT log, n FROM t1
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UNION ALL
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SELECT n FROM t1 WHERE log=3
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ORDER BY log;
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}} msg]
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lappend v $msg
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} {1 {SELECTs to the left and right of UNION ALL do not have the same number of result columns}}
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do_test select4-5.4 {
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set v [catch {execsql {
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SELECT log FROM t1 WHERE n=2
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UNION ALL
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SELECT log FROM t1 WHERE n=3
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UNION ALL
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SELECT log FROM t1 WHERE n=4
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UNION ALL
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SELECT log FROM t1 WHERE n=5
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ORDER BY log;
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}} msg]
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lappend v $msg
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} {0 {1 2 2 3}}
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do_test select4-6.1 {
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execsql {
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SELECT log, count(*) as cnt FROM t1 GROUP BY log
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UNION
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SELECT log, n FROM t1 WHERE n=7
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ORDER BY cnt, log;
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}
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} {0 1 1 1 2 2 3 4 3 7 4 8 5 15}
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do_test select4-6.2 {
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execsql {
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SELECT log, count(*) FROM t1 GROUP BY log
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UNION
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SELECT log, n FROM t1 WHERE n=7
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ORDER BY count(*), log;
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}
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} {0 1 1 1 2 2 3 4 3 7 4 8 5 15}
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# NULLs are indistinct for the UNION operator.
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# Make sure the UNION operator recognizes this
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#
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do_test select4-6.3 {
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execsql {
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SELECT NULL UNION SELECT NULL UNION
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SELECT 1 UNION SELECT 2 AS 'x'
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ORDER BY x;
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}
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} {{} 1 2}
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do_test select4-6.3.1 {
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execsql {
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SELECT NULL UNION ALL SELECT NULL UNION ALL
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SELECT 1 UNION ALL SELECT 2 AS 'x'
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ORDER BY x;
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}
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} {{} {} 1 2}
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# Make sure the DISTINCT keyword treats NULLs as indistinct.
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#
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do_test select4-6.4 {
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execsql {
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SELECT * FROM (
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SELECT NULL, 1 UNION ALL SELECT NULL, 1
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);
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}
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} {{} 1 {} 1}
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do_test select4-6.5 {
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execsql {
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SELECT DISTINCT * FROM (
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SELECT NULL, 1 UNION ALL SELECT NULL, 1
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);
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}
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} {{} 1}
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do_test select4-6.6 {
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execsql {
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SELECT DISTINCT * FROM (
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SELECT 1,2 UNION ALL SELECT 1,2
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);
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}
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} {1 2}
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# Test distinctness of NULL in other ways.
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#
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do_test select4-6.7 {
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execsql {
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SELECT NULL EXCEPT SELECT NULL
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}
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} {}
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# Make sure column names are correct when a compound select appears as
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# an expression in the WHERE clause.
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#
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do_test select4-7.1 {
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execsql {
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CREATE TABLE t2 AS SELECT log AS 'x', count(*) AS 'y' FROM t1 GROUP BY log;
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SELECT * FROM t2 ORDER BY x;
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}
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} {0 1 1 1 2 2 3 4 4 8 5 15}
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do_test select4-7.2 {
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execsql2 {
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SELECT * FROM t1 WHERE n IN (SELECT n FROM t1 INTERSECT SELECT x FROM t2)
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ORDER BY n
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}
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} {n 1 log 0 n 2 log 1 n 3 log 2 n 4 log 2 n 5 log 3}
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do_test select4-7.3 {
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execsql2 {
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SELECT * FROM t1 WHERE n IN (SELECT n FROM t1 EXCEPT SELECT x FROM t2)
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ORDER BY n LIMIT 2
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}
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} {n 6 log 3 n 7 log 3}
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do_test select4-7.4 {
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execsql2 {
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SELECT * FROM t1 WHERE n IN (SELECT n FROM t1 UNION SELECT x FROM t2)
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ORDER BY n LIMIT 2
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}
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} {n 1 log 0 n 2 log 1}
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# Make sure DISTINCT works appropriately on TEXT and NUMERIC columns.
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do_test select4-8.1 {
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execsql {
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BEGIN;
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CREATE TABLE t3(a text, b float, c text);
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INSERT INTO t3 VALUES(1, 1.1, '1.1');
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INSERT INTO t3 VALUES(2, 1.10, '1.10');
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INSERT INTO t3 VALUES(3, 1.10, '1.1');
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INSERT INTO t3 VALUES(4, 1.1, '1.10');
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INSERT INTO t3 VALUES(5, 1.2, '1.2');
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INSERT INTO t3 VALUES(6, 1.3, '1.3');
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COMMIT;
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}
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execsql {
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SELECT DISTINCT b FROM t3 ORDER BY c;
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}
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} {1.1 1.2 1.3}
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do_test select4-8.2 {
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execsql {
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SELECT DISTINCT c FROM t3 ORDER BY c;
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}
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} {1.1 1.10 1.2 1.3}
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finish_test
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