# 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 1.2 2005/09/12 23:03:17 drh Exp $set testdir [file dirname $argv0]source $testdir/tester.tcldo_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 in aggregate must be followed by an expression}}finish_test