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| 1 # 2008 August 26 |
| 2 # |
| 3 # The author disclaims copyright to this source code. In place of |
| 4 # a legal notice, here is a blessing: |
| 5 # |
| 6 # May you do good and not evil. |
| 7 # May you find forgiveness for yourself and forgive others. |
| 8 # May you share freely, never taking more than you give. |
| 9 # |
| 10 #*********************************************************************** |
| 11 # |
| 12 # This file implements regression tests for SQLite library. |
| 13 # Specifically, it tests that bug #3334 has been fixed by the |
| 14 # addition of restriction (19) to the subquery flattener optimization. |
| 15 # |
| 16 # $Id: tkt3334.test,v 1.1 2008/08/26 12:56:14 drh Exp $ |
| 17 |
| 18 |
| 19 set testdir [file dirname $argv0] |
| 20 source $testdir/tester.tcl |
| 21 |
| 22 do_test tkt3334-1.0 { |
| 23 execsql { |
| 24 CREATE TABLE t1(a,b); |
| 25 INSERT INTO t1 VALUES(1,934); |
| 26 INSERT INTO t1 VALUES(2,221); |
| 27 INSERT INTO t1 VALUES(1,372); |
| 28 INSERT INTO t1 VALUES(3,552); |
| 29 INSERT INTO t1 VALUES(1,719); |
| 30 INSERT INTO t1 VALUES(4,102); |
| 31 SELECT * FROM t1 ORDER BY b; |
| 32 } |
| 33 } {4 102 2 221 1 372 3 552 1 719 1 934} |
| 34 |
| 35 do_test tkt3334-1.1 { |
| 36 execsql { |
| 37 SELECT a FROM (SELECT a FROM t1 ORDER BY b LIMIT 2) WHERE a=1; |
| 38 } |
| 39 } {} |
| 40 do_test tkt3334-1.2 { |
| 41 execsql { |
| 42 SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b LIMIT 2) WHERE a=1; |
| 43 } |
| 44 } {0} |
| 45 do_test tkt3334-1.3 { |
| 46 execsql { |
| 47 SELECT a FROM (SELECT a FROM t1 ORDER BY b LIMIT 3) WHERE a=1; |
| 48 } |
| 49 } {1} |
| 50 do_test tkt3334-1.4 { |
| 51 execsql { |
| 52 SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b LIMIT 3) WHERE a=1; |
| 53 } |
| 54 } {1} |
| 55 do_test tkt3334-1.5 { |
| 56 execsql { |
| 57 SELECT a FROM (SELECT a FROM t1 ORDER BY b LIMIT 99) WHERE a=1; |
| 58 } |
| 59 } {1 1 1} |
| 60 do_test tkt3334-1.6 { |
| 61 execsql { |
| 62 SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b LIMIT 99) WHERE a=1; |
| 63 } |
| 64 } {3} |
| 65 do_test tkt3334-1.7 { |
| 66 execsql { |
| 67 SELECT a FROM (SELECT a FROM t1 ORDER BY b) WHERE a=1; |
| 68 } |
| 69 } {1 1 1} |
| 70 do_test tkt3334-1.8 { |
| 71 execsql { |
| 72 SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b) WHERE a=1; |
| 73 } |
| 74 } {3} |
| 75 do_test tkt3334-1.9 { |
| 76 execsql { |
| 77 SELECT a FROM (SELECT a FROM t1) WHERE a=1; |
| 78 } |
| 79 } {1 1 1} |
| 80 do_test tkt3334-1.10 { |
| 81 execsql { |
| 82 SELECT count(*) FROM (SELECT a FROM t1) WHERE a=1; |
| 83 } |
| 84 } {3} |
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