# 2012 November 9
#
# 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 implements regression tests for SQLite library. The
# focus of this file is testing the query planner to make sure it
# is making good planning decisions.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set ::testprefix whereE
do_execsql_test 1.1 {
CREATE TABLE t1(a,b);
INSERT INTO t1 VALUES(1,10), (2,20), (3,30), (2,22), (3, 33);
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
ALTER TABLE t1 ADD COLUMN c;
UPDATE t1 SET c=a*rowid+10000;
CREATE INDEX t1ab ON t1(a,b);
CREATE TABLE t2(x,y);
INSERT INTO t2 VALUES(4,44),(5,55),(6,66),(7,77);
INSERT INTO t2 SELECT x+4, (x+4)*11 FROM t2;
INSERT INTO t2 SELECT x+8, (x+8)*11 FROM t2;
INSERT INTO t2 SELECT x+16, (x+16)*11 FROM t2;
INSERT INTO t2 SELECT x+32, (x+32)*11 FROM t2;
INSERT INTO t2 SELECT x+64, (x+32)*11 FROM t2;
ALTER TABLE t2 ADD COLUMN z;
UPDATE t2 SET z=2;
CREATE UNIQUE INDEX t2zx ON t2(z,x);
EXPLAIN QUERY PLAN SELECT x FROM t1, t2 WHERE a=z AND c=x;
} {/.*SCAN TABLE t1.*SEARCH TABLE t2.*/}
do_execsql_test 1.2 {
EXPLAIN QUERY PLAN SELECT x FROM t2, t1 WHERE a=z AND c=x;
} {/.*SCAN TABLE t1.*SEARCH TABLE t2.*/}
do_execsql_test 1.3 {
ANALYZE;
EXPLAIN QUERY PLAN SELECT x FROM t1, t2 WHERE a=z AND c=x;
} {/.*SCAN TABLE t1.*SEARCH TABLE t2.*/}
do_execsql_test 1.4 {
EXPLAIN QUERY PLAN SELECT x FROM t2, t1 WHERE a=z AND c=x;
} {/.*SCAN TABLE t1.*SEARCH TABLE t2.*/}
finish_test