# 2008 August 26 # # 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. # Specifically, it tests that bug #3334 has been fixed by the # addition of restriction (19) to the subquery flattener optimization. # # $Id: tkt3334.test,v 1.1 2008/08/26 12:56:14 drh Exp $ set testdir [file dirname $argv0] source $testdir/tester.tcl do_test tkt3334-1.0 { execsql { CREATE TABLE t1(a,b); INSERT INTO t1 VALUES(1,934); INSERT INTO t1 VALUES(2,221); INSERT INTO t1 VALUES(1,372); INSERT INTO t1 VALUES(3,552); INSERT INTO t1 VALUES(1,719); INSERT INTO t1 VALUES(4,102); SELECT * FROM t1 ORDER BY b; } } {4 102 2 221 1 372 3 552 1 719 1 934} do_test tkt3334-1.1 { execsql { SELECT a FROM (SELECT a FROM t1 ORDER BY b LIMIT 2) WHERE a=1; } } {} do_test tkt3334-1.2 { execsql { SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b LIMIT 2) WHERE a=1; } } {0} do_test tkt3334-1.3 { execsql { SELECT a FROM (SELECT a FROM t1 ORDER BY b LIMIT 3) WHERE a=1; } } {1} do_test tkt3334-1.4 { execsql { SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b LIMIT 3) WHERE a=1; } } {1} do_test tkt3334-1.5 { execsql { SELECT a FROM (SELECT a FROM t1 ORDER BY b LIMIT 99) WHERE a=1; } } {1 1 1} do_test tkt3334-1.6 { execsql { SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b LIMIT 99) WHERE a=1; } } {3} do_test tkt3334-1.7 { execsql { SELECT a FROM (SELECT a FROM t1 ORDER BY b) WHERE a=1; } } {1 1 1} do_test tkt3334-1.8 { execsql { SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b) WHERE a=1; } } {3} do_test tkt3334-1.9 { execsql { SELECT a FROM (SELECT a FROM t1) WHERE a=1; } } {1 1 1} do_test tkt3334-1.10 { execsql { SELECT count(*) FROM (SELECT a FROM t1) WHERE a=1; } } {3} finish_test