# 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 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