54 lines
1.5 KiB
Plaintext
54 lines
1.5 KiB
Plaintext
# 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}
|
|
}
|
|
|
|
do_eqp_test 2.2 { SELECT DISTINCT y FROM t2 } {
|
|
0 0 0 {SCAN TABLE t2 USING COVERING INDEX t2y}
|
|
}
|
|
|
|
do_eqp_test 2.3 { SELECT DISTINCT x, y FROM t2 WHERE y=10 } {
|
|
0 0 0 {SEARCH TABLE t2 USING INDEX t2y (y=?)}
|
|
}
|
|
|
|
do_eqp_test 2.4 { SELECT DISTINCT x, y FROM t2 WHERE x=10 } {
|
|
0 0 0 {SEARCH TABLE t2 USING INDEX t2x (x=?)}
|
|
}
|
|
|
|
finish_test
|