| # 2014-03-03 |
| # |
| # 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 verifies that an OP_Copy operation is used instead of OP_SCopy |
| # in a compound select in a case where the source register might be changed |
| # before the copy is used. |
| # |
| |
| set testdir [file dirname $argv0] |
| source $testdir/tester.tcl |
| set testprefix selectF |
| |
| do_execsql_test 1 { |
| BEGIN TRANSACTION; |
| CREATE TABLE t1(a, b, c); |
| INSERT INTO "t1" VALUES(1,'one','I'); |
| CREATE TABLE t2(d, e, f); |
| INSERT INTO "t2" VALUES(5,'ten','XX'); |
| INSERT INTO "t2" VALUES(6,NULL,NULL); |
| |
| CREATE INDEX i1 ON t1(b, a); |
| COMMIT; |
| } |
| |
| #explain_i { |
| # SELECT * FROM t2 |
| # UNION ALL |
| # SELECT * FROM t1 WHERE a<5 |
| # ORDER BY 2, 1 |
| #} |
| |
| do_execsql_test 2 { |
| SELECT * FROM t2 |
| UNION ALL |
| SELECT * FROM t1 WHERE a<5 |
| ORDER BY 2, 1 |
| } {6 {} {} 1 one I 5 ten XX} |
| |
| |
| |
| finish_test |
