# 2005 September 11
#
# 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 script is the DISTINCT modifier on aggregate functions.
#
# $Id: distinctagg.test,v 1.3 2009/02/09 13:19:28 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
do_test distinctagg-1.1 {
execsql {
CREATE TABLE t1(a,b,c);
INSERT INTO t1 VALUES(1,2,3);
INSERT INTO t1 VALUES(1,3,4);
INSERT INTO t1 VALUES(1,3,5);
SELECT count(distinct a),
count(distinct b),
count(distinct c),
count(all a) FROM t1;
}
} {1 2 3 3}
do_test distinctagg-1.2 {
execsql {
SELECT b, count(distinct c) FROM t1 GROUP BY b ORDER BY b
}
} {2 1 3 2}
do_test distinctagg-1.3 {
execsql {
INSERT INTO t1 SELECT a+1, b+3, c+5 FROM t1;
INSERT INTO t1 SELECT a+2, b+6, c+10 FROM t1;
INSERT INTO t1 SELECT a+4, b+12, c+20 FROM t1;
SELECT count(*), count(distinct a), count(distinct b) FROM t1
}
} {24 8 16}
do_test distinctagg-1.4 {
execsql {
SELECT a, count(distinct c) FROM t1 GROUP BY a ORDER BY a
}
} {1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3}
do_test distinctagg-2.1 {
catchsql {
SELECT count(distinct) FROM t1;
}
} {1 {DISTINCT aggregates must have exactly one argument}}
do_test distinctagg-2.2 {
catchsql {
SELECT group_concat(distinct a,b) FROM t1;
}
} {1 {DISTINCT aggregates must have exactly one argument}}
finish_test