/trunk/test/select3.test |
@@ -0,0 +1,264 @@ |
# 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: select3.test,v 1.23 2008/01/16 18:20:42 danielk1977 Exp $ |
|
set testdir [file dirname $argv0] |
source $testdir/tester.tcl |
|
# Build some test data |
# |
do_test select3-1.0 { |
execsql { |
CREATE TABLE t1(n int, log int); |
BEGIN; |
} |
for {set i 1} {$i<32} {incr i} { |
for {set j 0} {(1<<$j)<$i} {incr j} {} |
execsql "INSERT INTO t1 VALUES($i,$j)" |
} |
execsql { |
COMMIT |
} |
execsql {SELECT DISTINCT log FROM t1 ORDER BY log} |
} {0 1 2 3 4 5} |
|
# Basic aggregate functions. |
# |
do_test select3-1.1 { |
execsql {SELECT count(*) FROM t1} |
} {31} |
do_test select3-1.2 { |
execsql { |
SELECT min(n),min(log),max(n),max(log),sum(n),sum(log),avg(n),avg(log) |
FROM t1 |
} |
} {1 0 31 5 496 124 16.0 4.0} |
do_test select3-1.3 { |
execsql {SELECT max(n)/avg(n), max(log)/avg(log) FROM t1} |
} {1.9375 1.25} |
|
# Try some basic GROUP BY clauses |
# |
do_test select3-2.1 { |
execsql {SELECT log, count(*) FROM t1 GROUP BY log ORDER BY log} |
} {0 1 1 1 2 2 3 4 4 8 5 15} |
do_test select3-2.2 { |
execsql {SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log} |
} {0 1 1 2 2 3 3 5 4 9 5 17} |
do_test select3-2.3.1 { |
execsql {SELECT log, avg(n) FROM t1 GROUP BY log ORDER BY log} |
} {0 1.0 1 2.0 2 3.5 3 6.5 4 12.5 5 24.0} |
do_test select3-2.3.2 { |
execsql {SELECT log, avg(n)+1 FROM t1 GROUP BY log ORDER BY log} |
} {0 2.0 1 3.0 2 4.5 3 7.5 4 13.5 5 25.0} |
do_test select3-2.4 { |
execsql {SELECT log, avg(n)-min(n) FROM t1 GROUP BY log ORDER BY log} |
} {0 0.0 1 0.0 2 0.5 3 1.5 4 3.5 5 7.0} |
do_test select3-2.5 { |
execsql {SELECT log*2+1, avg(n)-min(n) FROM t1 GROUP BY log ORDER BY log} |
} {1 0.0 3 0.0 5 0.5 7 1.5 9 3.5 11 7.0} |
do_test select3-2.6 { |
execsql { |
SELECT log*2+1 as x, count(*) FROM t1 GROUP BY x ORDER BY x |
} |
} {1 1 3 1 5 2 7 4 9 8 11 15} |
do_test select3-2.7 { |
execsql { |
SELECT log*2+1 AS x, count(*) AS y FROM t1 GROUP BY x ORDER BY y, x |
} |
} {1 1 3 1 5 2 7 4 9 8 11 15} |
do_test select3-2.8 { |
execsql { |
SELECT log*2+1 AS x, count(*) AS y FROM t1 GROUP BY x ORDER BY 10-(x+y) |
} |
} {11 15 9 8 7 4 5 2 3 1 1 1} |
#do_test select3-2.9 { |
# catchsql { |
# SELECT log, count(*) FROM t1 GROUP BY 'x' ORDER BY log; |
# } |
#} {1 {GROUP BY terms must not be non-integer constants}} |
do_test select3-2.10 { |
catchsql { |
SELECT log, count(*) FROM t1 GROUP BY 0 ORDER BY log; |
} |
} {1 {1st GROUP BY term out of range - should be between 1 and 2}} |
do_test select3-2.11 { |
catchsql { |
SELECT log, count(*) FROM t1 GROUP BY 3 ORDER BY log; |
} |
} {1 {1st GROUP BY term out of range - should be between 1 and 2}} |
do_test select3-2.12 { |
catchsql { |
SELECT log, count(*) FROM t1 GROUP BY 1 ORDER BY log; |
} |
} {0 {0 1 1 1 2 2 3 4 4 8 5 15}} |
|
# Cannot have an empty GROUP BY |
do_test select3-2.13 { |
catchsql { |
SELECT log, count(*) FROM t1 GROUP BY ORDER BY log; |
} |
} {1 {near "ORDER": syntax error}} |
do_test select3-2.14 { |
catchsql { |
SELECT log, count(*) FROM t1 GROUP BY; |
} |
} {1 {near ";": syntax error}} |
|
# Cannot have a HAVING without a GROUP BY |
# |
do_test select3-3.1 { |
set v [catch {execsql {SELECT log, count(*) FROM t1 HAVING log>=4}} msg] |
lappend v $msg |
} {1 {a GROUP BY clause is required before HAVING}} |
|
# Toss in some HAVING clauses |
# |
do_test select3-4.1 { |
execsql {SELECT log, count(*) FROM t1 GROUP BY log HAVING log>=4 ORDER BY log} |
} {4 8 5 15} |
do_test select3-4.2 { |
execsql { |
SELECT log, count(*) FROM t1 |
GROUP BY log |
HAVING count(*)>=4 |
ORDER BY log |
} |
} {3 4 4 8 5 15} |
do_test select3-4.3 { |
execsql { |
SELECT log, count(*) FROM t1 |
GROUP BY log |
HAVING count(*)>=4 |
ORDER BY max(n)+0 |
} |
} {3 4 4 8 5 15} |
do_test select3-4.4 { |
execsql { |
SELECT log AS x, count(*) AS y FROM t1 |
GROUP BY x |
HAVING y>=4 |
ORDER BY max(n)+0 |
} |
} {3 4 4 8 5 15} |
do_test select3-4.5 { |
execsql { |
SELECT log AS x FROM t1 |
GROUP BY x |
HAVING count(*)>=4 |
ORDER BY max(n)+0 |
} |
} {3 4 5} |
|
do_test select3-5.1 { |
execsql { |
SELECT log, count(*), avg(n), max(n+log*2) FROM t1 |
GROUP BY log |
ORDER BY max(n+log*2)+0, avg(n)+0 |
} |
} {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} |
do_test select3-5.2 { |
execsql { |
SELECT log, count(*), avg(n), max(n+log*2) FROM t1 |
GROUP BY log |
ORDER BY max(n+log*2)+0, min(log,avg(n))+0 |
} |
} {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} |
|
# Test sorting of GROUP BY results in the presence of an index |
# on the GROUP BY column. |
# |
do_test select3-6.1 { |
execsql { |
SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log; |
} |
} {0 1 1 2 2 3 3 5 4 9 5 17} |
do_test select3-6.2 { |
execsql { |
SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log DESC; |
} |
} {5 17 4 9 3 5 2 3 1 2 0 1} |
do_test select3-6.3 { |
execsql { |
SELECT log, min(n) FROM t1 GROUP BY log ORDER BY 1; |
} |
} {0 1 1 2 2 3 3 5 4 9 5 17} |
do_test select3-6.4 { |
execsql { |
SELECT log, min(n) FROM t1 GROUP BY log ORDER BY 1 DESC; |
} |
} {5 17 4 9 3 5 2 3 1 2 0 1} |
do_test select3-6.5 { |
execsql { |
CREATE INDEX i1 ON t1(log); |
SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log; |
} |
} {0 1 1 2 2 3 3 5 4 9 5 17} |
do_test select3-6.6 { |
execsql { |
SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log DESC; |
} |
} {5 17 4 9 3 5 2 3 1 2 0 1} |
do_test select3-6.7 { |
execsql { |
SELECT log, min(n) FROM t1 GROUP BY log ORDER BY 1; |
} |
} {0 1 1 2 2 3 3 5 4 9 5 17} |
do_test select3-6.8 { |
execsql { |
SELECT log, min(n) FROM t1 GROUP BY log ORDER BY 1 DESC; |
} |
} {5 17 4 9 3 5 2 3 1 2 0 1} |
|
# Sometimes an aggregate query can return no rows at all. |
# |
do_test select3-7.1 { |
execsql { |
CREATE TABLE t2(a,b); |
INSERT INTO t2 VALUES(1,2); |
SELECT a, sum(b) FROM t2 WHERE b=5 GROUP BY a; |
} |
} {} |
do_test select3-7.2 { |
execsql { |
SELECT a, sum(b) FROM t2 WHERE b=5; |
} |
} {{} {}} |
|
# If a table column is of type REAL but we are storing integer values |
# in it, the values are stored as integers to take up less space. The |
# values are converted by to REAL as they are read out of the table. |
# Make sure the GROUP BY clause does this conversion correctly. |
# Ticket #2251. |
# |
do_test select3-8.1 { |
execsql { |
CREATE TABLE A ( |
A1 DOUBLE, |
A2 VARCHAR COLLATE NOCASE, |
A3 DOUBLE |
); |
INSERT INTO A VALUES(39136,'ABC',1201900000); |
INSERT INTO A VALUES(39136,'ABC',1207000000); |
SELECT typeof(sum(a3)) FROM a; |
} |
} {real} |
do_test select3-8.2 { |
execsql { |
SELECT typeof(sum(a3)) FROM a GROUP BY a1; |
} |
} {real} |
|
finish_test |