| # 2012 April 19 |
| # |
| # 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. |
| # |
| #*********************************************************************** |
| # The tests in this file were used while developing the SQLite 4 code. |
| # |
| |
| set testdir [file dirname $argv0] |
| source $testdir/tester.tcl |
| set testprefix tkt-2a5629202f |
| |
| # This procedure executes the SQL. Then it checks to see if the OP_Sort |
| # opcode was executed. If an OP_Sort did occur, then "sort" is appended |
| # to the result. If no OP_Sort happened, then "nosort" is appended. |
| # |
| # This procedure is used to check to make sure sorting is or is not |
| # occurring as expected. |
| # |
| proc cksort {sql} { |
| set data [execsql $sql] |
| if {[db status sort]} {set x sort} {set x nosort} |
| lappend data $x |
| return $data |
| } |
| |
| do_execsql_test 1.1 { |
| CREATE TABLE t8(b TEXT, c TEXT); |
| INSERT INTO t8 VALUES('a', 'one'); |
| INSERT INTO t8 VALUES('b', 'two'); |
| INSERT INTO t8 VALUES(NULL, 'three'); |
| INSERT INTO t8 VALUES(NULL, 'four'); |
| } |
| |
| do_execsql_test 1.2 { |
| SELECT coalesce(b, 'null') || '/' || c FROM t8 x ORDER BY x.b, x.c |
| } {null/four null/three a/one b/two} |
| |
| do_execsql_test 1.3 { |
| CREATE UNIQUE INDEX i1 ON t8(b); |
| SELECT coalesce(b, 'null') || '/' || c FROM t8 x ORDER BY x.b, x.c |
| } {null/four null/three a/one b/two} |
| |
| do_execsql_test 1.4 { |
| DROP INDEX i1; |
| CREATE UNIQUE INDEX i1 ON t8(b, c); |
| SELECT coalesce(b, 'null') || '/' || c FROM t8 x ORDER BY x.b, x.c |
| } {null/four null/three a/one b/two} |
| |
| #------------------------------------------------------------------------- |
| # |
| |
| do_execsql_test 2.1 { |
| CREATE TABLE t2(a, b NOT NULL, c); |
| CREATE UNIQUE INDEX t2ab ON t2(a, b); |
| CREATE UNIQUE INDEX t2ba ON t2(b, a); |
| } |
| |
| do_test 2.2 { |
| cksort { SELECT * FROM t2 WHERE a = 10 ORDER BY a, b, c } |
| } {nosort} |
| |
| do_test 2.3 { |
| cksort { SELECT * FROM t2 WHERE b = 10 ORDER BY a, b, c } |
| } {sort} |
| |
| do_test 2.4 { |
| cksort { SELECT * FROM t2 WHERE a IS NULL ORDER BY a, b, c } |
| } {sort} |
| |
| finish_test |