| # 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} |