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# 2008 August 26
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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#
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# This file implements regression tests for SQLite library.
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# Specifically, it tests that bug #3334 has been fixed by the
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# addition of restriction (19) to the subquery flattener optimization.
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#
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# $Id: tkt3334.test,v 1.1 2008/08/26 12:56:14 drh Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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do_test tkt3334-1.0 {
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execsql {
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CREATE TABLE t1(a,b);
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INSERT INTO t1 VALUES(1,934);
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INSERT INTO t1 VALUES(2,221);
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INSERT INTO t1 VALUES(1,372);
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INSERT INTO t1 VALUES(3,552);
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INSERT INTO t1 VALUES(1,719);
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INSERT INTO t1 VALUES(4,102);
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SELECT * FROM t1 ORDER BY b;
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}
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} {4 102 2 221 1 372 3 552 1 719 1 934}
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do_test tkt3334-1.1 {
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execsql {
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SELECT a FROM (SELECT a FROM t1 ORDER BY b LIMIT 2) WHERE a=1;
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}
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} {}
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do_test tkt3334-1.2 {
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execsql {
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SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b LIMIT 2) WHERE a=1;
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}
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} {0}
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do_test tkt3334-1.3 {
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execsql {
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SELECT a FROM (SELECT a FROM t1 ORDER BY b LIMIT 3) WHERE a=1;
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}
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} {1}
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do_test tkt3334-1.4 {
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execsql {
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SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b LIMIT 3) WHERE a=1;
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}
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} {1}
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do_test tkt3334-1.5 {
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execsql {
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SELECT a FROM (SELECT a FROM t1 ORDER BY b LIMIT 99) WHERE a=1;
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}
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} {1 1 1}
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do_test tkt3334-1.6 {
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execsql {
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SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b LIMIT 99) WHERE a=1;
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}
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} {3}
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do_test tkt3334-1.7 {
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execsql {
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SELECT a FROM (SELECT a FROM t1 ORDER BY b) WHERE a=1;
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}
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} {1 1 1}
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do_test tkt3334-1.8 {
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execsql {
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SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b) WHERE a=1;
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}
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} {3}
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do_test tkt3334-1.9 {
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execsql {
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SELECT a FROM (SELECT a FROM t1) WHERE a=1;
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}
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} {1 1 1}
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do_test tkt3334-1.10 {
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execsql {
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SELECT count(*) FROM (SELECT a FROM t1) WHERE a=1;
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}
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} {3}
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