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265 lines
6.8 KiB
Text
265 lines
6.8 KiB
Text
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# 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: select3.test,v 1.23 2008/01/16 18:20:42 danielk1977 Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# Build some test data
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#
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do_test select3-1.0 {
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execsql {
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CREATE TABLE t1(n int, log int);
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BEGIN;
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}
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for {set i 1} {$i<32} {incr i} {
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for {set j 0} {(1<<$j)<$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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execsql {SELECT DISTINCT log FROM t1 ORDER BY log}
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} {0 1 2 3 4 5}
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# Basic aggregate functions.
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#
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do_test select3-1.1 {
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execsql {SELECT count(*) FROM t1}
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} {31}
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do_test select3-1.2 {
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execsql {
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SELECT min(n),min(log),max(n),max(log),sum(n),sum(log),avg(n),avg(log)
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FROM t1
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}
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} {1 0 31 5 496 124 16.0 4.0}
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do_test select3-1.3 {
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execsql {SELECT max(n)/avg(n), max(log)/avg(log) FROM t1}
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} {1.9375 1.25}
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# Try some basic GROUP BY clauses
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#
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do_test select3-2.1 {
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execsql {SELECT log, count(*) FROM t1 GROUP BY log ORDER BY log}
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} {0 1 1 1 2 2 3 4 4 8 5 15}
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do_test select3-2.2 {
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execsql {SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log}
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} {0 1 1 2 2 3 3 5 4 9 5 17}
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do_test select3-2.3.1 {
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execsql {SELECT log, avg(n) FROM t1 GROUP BY log ORDER BY log}
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} {0 1.0 1 2.0 2 3.5 3 6.5 4 12.5 5 24.0}
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do_test select3-2.3.2 {
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execsql {SELECT log, avg(n)+1 FROM t1 GROUP BY log ORDER BY log}
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} {0 2.0 1 3.0 2 4.5 3 7.5 4 13.5 5 25.0}
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do_test select3-2.4 {
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execsql {SELECT log, avg(n)-min(n) FROM t1 GROUP BY log ORDER BY log}
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} {0 0.0 1 0.0 2 0.5 3 1.5 4 3.5 5 7.0}
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do_test select3-2.5 {
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execsql {SELECT log*2+1, avg(n)-min(n) FROM t1 GROUP BY log ORDER BY log}
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} {1 0.0 3 0.0 5 0.5 7 1.5 9 3.5 11 7.0}
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do_test select3-2.6 {
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execsql {
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SELECT log*2+1 as x, count(*) FROM t1 GROUP BY x ORDER BY x
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}
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} {1 1 3 1 5 2 7 4 9 8 11 15}
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do_test select3-2.7 {
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execsql {
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SELECT log*2+1 AS x, count(*) AS y FROM t1 GROUP BY x ORDER BY y, x
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}
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} {1 1 3 1 5 2 7 4 9 8 11 15}
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do_test select3-2.8 {
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execsql {
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SELECT log*2+1 AS x, count(*) AS y FROM t1 GROUP BY x ORDER BY 10-(x+y)
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}
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} {11 15 9 8 7 4 5 2 3 1 1 1}
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#do_test select3-2.9 {
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# catchsql {
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# SELECT log, count(*) FROM t1 GROUP BY 'x' ORDER BY log;
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# }
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#} {1 {GROUP BY terms must not be non-integer constants}}
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do_test select3-2.10 {
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catchsql {
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SELECT log, count(*) FROM t1 GROUP BY 0 ORDER BY log;
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}
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} {1 {1st GROUP BY term out of range - should be between 1 and 2}}
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do_test select3-2.11 {
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catchsql {
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SELECT log, count(*) FROM t1 GROUP BY 3 ORDER BY log;
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}
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} {1 {1st GROUP BY term out of range - should be between 1 and 2}}
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do_test select3-2.12 {
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catchsql {
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SELECT log, count(*) FROM t1 GROUP BY 1 ORDER BY log;
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}
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} {0 {0 1 1 1 2 2 3 4 4 8 5 15}}
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# Cannot have an empty GROUP BY
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do_test select3-2.13 {
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catchsql {
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SELECT log, count(*) FROM t1 GROUP BY ORDER BY log;
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}
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} {1 {near "ORDER": syntax error}}
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do_test select3-2.14 {
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catchsql {
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SELECT log, count(*) FROM t1 GROUP BY;
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}
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} {1 {near ";": syntax error}}
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# Cannot have a HAVING without a GROUP BY
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#
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do_test select3-3.1 {
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set v [catch {execsql {SELECT log, count(*) FROM t1 HAVING log>=4}} msg]
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lappend v $msg
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} {1 {a GROUP BY clause is required before HAVING}}
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# Toss in some HAVING clauses
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#
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do_test select3-4.1 {
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execsql {SELECT log, count(*) FROM t1 GROUP BY log HAVING log>=4 ORDER BY log}
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} {4 8 5 15}
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do_test select3-4.2 {
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execsql {
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SELECT log, count(*) FROM t1
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GROUP BY log
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HAVING count(*)>=4
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ORDER BY log
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}
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} {3 4 4 8 5 15}
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do_test select3-4.3 {
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execsql {
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SELECT log, count(*) FROM t1
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GROUP BY log
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HAVING count(*)>=4
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ORDER BY max(n)+0
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}
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} {3 4 4 8 5 15}
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do_test select3-4.4 {
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execsql {
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SELECT log AS x, count(*) AS y FROM t1
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GROUP BY x
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HAVING y>=4
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ORDER BY max(n)+0
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}
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} {3 4 4 8 5 15}
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do_test select3-4.5 {
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execsql {
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SELECT log AS x FROM t1
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GROUP BY x
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HAVING count(*)>=4
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ORDER BY max(n)+0
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}
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} {3 4 5}
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do_test select3-5.1 {
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execsql {
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SELECT log, count(*), avg(n), max(n+log*2) FROM t1
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GROUP BY log
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ORDER BY max(n+log*2)+0, avg(n)+0
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}
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} {0 1 1.0 1 1 1 2.0 4 2 2 3.5 8 3 4 6.5 14 4 8 12.5 24 5 15 24.0 41}
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do_test select3-5.2 {
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execsql {
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SELECT log, count(*), avg(n), max(n+log*2) FROM t1
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GROUP BY log
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ORDER BY max(n+log*2)+0, min(log,avg(n))+0
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}
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} {0 1 1.0 1 1 1 2.0 4 2 2 3.5 8 3 4 6.5 14 4 8 12.5 24 5 15 24.0 41}
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# Test sorting of GROUP BY results in the presence of an index
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# on the GROUP BY column.
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#
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do_test select3-6.1 {
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execsql {
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SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log;
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}
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} {0 1 1 2 2 3 3 5 4 9 5 17}
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do_test select3-6.2 {
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execsql {
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SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log DESC;
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}
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} {5 17 4 9 3 5 2 3 1 2 0 1}
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do_test select3-6.3 {
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execsql {
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SELECT log, min(n) FROM t1 GROUP BY log ORDER BY 1;
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}
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} {0 1 1 2 2 3 3 5 4 9 5 17}
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do_test select3-6.4 {
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execsql {
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SELECT log, min(n) FROM t1 GROUP BY log ORDER BY 1 DESC;
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}
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} {5 17 4 9 3 5 2 3 1 2 0 1}
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do_test select3-6.5 {
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execsql {
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CREATE INDEX i1 ON t1(log);
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SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log;
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}
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} {0 1 1 2 2 3 3 5 4 9 5 17}
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do_test select3-6.6 {
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execsql {
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SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log DESC;
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}
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} {5 17 4 9 3 5 2 3 1 2 0 1}
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do_test select3-6.7 {
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execsql {
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SELECT log, min(n) FROM t1 GROUP BY log ORDER BY 1;
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}
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} {0 1 1 2 2 3 3 5 4 9 5 17}
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do_test select3-6.8 {
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execsql {
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SELECT log, min(n) FROM t1 GROUP BY log ORDER BY 1 DESC;
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}
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} {5 17 4 9 3 5 2 3 1 2 0 1}
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# Sometimes an aggregate query can return no rows at all.
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#
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do_test select3-7.1 {
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execsql {
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CREATE TABLE t2(a,b);
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INSERT INTO t2 VALUES(1,2);
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SELECT a, sum(b) FROM t2 WHERE b=5 GROUP BY a;
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}
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} {}
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do_test select3-7.2 {
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execsql {
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SELECT a, sum(b) FROM t2 WHERE b=5;
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}
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} {{} {}}
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# If a table column is of type REAL but we are storing integer values
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# in it, the values are stored as integers to take up less space. The
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# values are converted by to REAL as they are read out of the table.
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# Make sure the GROUP BY clause does this conversion correctly.
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# Ticket #2251.
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#
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do_test select3-8.1 {
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execsql {
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CREATE TABLE A (
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A1 DOUBLE,
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A2 VARCHAR COLLATE NOCASE,
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A3 DOUBLE
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);
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INSERT INTO A VALUES(39136,'ABC',1201900000);
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INSERT INTO A VALUES(39136,'ABC',1207000000);
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SELECT typeof(sum(a3)) FROM a;
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}
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} {real}
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do_test select3-8.2 {
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execsql {
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SELECT typeof(sum(a3)) FROM a GROUP BY a1;
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}
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} {real}
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finish_test
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