# 2012 April 02 # # 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-385a5b56b9 do_execsql_test 1.0 { CREATE TABLE t1(x, y); INSERT INTO t1 VALUES(1, NULL); INSERT INTO t1 VALUES(2, NULL); INSERT INTO t1 VALUES(1, NULL); } do_execsql_test 1.1 { SELECT DISTINCT x, y FROM t1 } {1 {} 2 {}} do_execsql_test 1.2 { CREATE UNIQUE INDEX i1 ON t1(x, y) } do_execsql_test 1.3 { SELECT DISTINCT x, y FROM t1 } {1 {} 2 {}} #------------------------------------------------------------------------- do_execsql_test 2.0 { CREATE TABLE t2(x, y NOT NULL); CREATE UNIQUE INDEX t2x ON t2(x); CREATE UNIQUE INDEX t2y ON t2(y); } do_eqp_test 2.1 { SELECT DISTINCT x FROM t2 } { 0 0 0 {SCAN TABLE t2 USING COVERING INDEX t2x (~1000000 rows)} } do_eqp_test 2.2 { SELECT DISTINCT y FROM t2 } { 0 0 0 {SCAN TABLE t2 USING COVERING INDEX t2y (~1000000 rows)} } do_eqp_test 2.3 { SELECT DISTINCT x, y FROM t2 WHERE y=10 } { 0 0 0 {SEARCH TABLE t2 USING INDEX t2y (y=?) (~1 rows)} } do_eqp_test 2.4 { SELECT DISTINCT x, y FROM t2 WHERE x=10 } { 0 0 0 {SEARCH TABLE t2 USING INDEX t2x (x=?) (~1 rows)} } finish_test