1# 2012 November 9 2# 3# The author disclaims copyright to this source code. In place of 4# a legal notice, here is a blessing: 5# 6# May you do good and not evil. 7# May you find forgiveness for yourself and forgive others. 8# May you share freely, never taking more than you give. 9# 10#*********************************************************************** 11# This file implements regression tests for SQLite library. The 12# focus of this file is testing the query planner to make sure it 13# is making good planning decisions. 14# 15 16 17set testdir [file dirname $argv0] 18source $testdir/tester.tcl 19set ::testprefix whereE 20 21do_execsql_test 1.1 { 22 CREATE TABLE t1(a,b); 23 INSERT INTO t1 VALUES(1,10), (2,20), (3,30), (2,22), (3, 33); 24 INSERT INTO t1 SELECT * FROM t1; 25 INSERT INTO t1 SELECT * FROM t1; 26 INSERT INTO t1 SELECT * FROM t1; 27 INSERT INTO t1 SELECT * FROM t1; 28 INSERT INTO t1 SELECT * FROM t1; 29 INSERT INTO t1 SELECT * FROM t1; 30 INSERT INTO t1 SELECT * FROM t1; 31 INSERT INTO t1 SELECT * FROM t1; 32 INSERT INTO t1 SELECT * FROM t1; 33 INSERT INTO t1 SELECT * FROM t1; 34 ALTER TABLE t1 ADD COLUMN c; 35 UPDATE t1 SET c=a*rowid+10000; 36 CREATE INDEX t1ab ON t1(a,b); 37 38 CREATE TABLE t2(x,y); 39 INSERT INTO t2 VALUES(4,44),(5,55),(6,66),(7,77); 40 INSERT INTO t2 SELECT x+4, (x+4)*11 FROM t2; 41 INSERT INTO t2 SELECT x+8, (x+8)*11 FROM t2; 42 INSERT INTO t2 SELECT x+16, (x+16)*11 FROM t2; 43 INSERT INTO t2 SELECT x+32, (x+32)*11 FROM t2; 44 INSERT INTO t2 SELECT x+64, (x+32)*11 FROM t2; 45 ALTER TABLE t2 ADD COLUMN z; 46 UPDATE t2 SET z=2; 47 CREATE UNIQUE INDEX t2zx ON t2(z,x); 48 49 EXPLAIN QUERY PLAN SELECT x FROM t1, t2 WHERE a=z AND c=x; 50} {/.*SCAN TABLE t1.*SEARCH TABLE t2.*/} 51do_execsql_test 1.2 { 52 EXPLAIN QUERY PLAN SELECT x FROM t2, t1 WHERE a=z AND c=x; 53} {/.*SCAN TABLE t1.*SEARCH TABLE t2.*/} 54do_execsql_test 1.3 { 55 ANALYZE; 56 EXPLAIN QUERY PLAN SELECT x FROM t1, t2 WHERE a=z AND c=x; 57} {/.*SCAN TABLE t1.*SEARCH TABLE t2.*/} 58do_execsql_test 1.4 { 59 EXPLAIN QUERY PLAN SELECT x FROM t2, t1 WHERE a=z AND c=x; 60} {/.*SCAN TABLE t1.*SEARCH TABLE t2.*/} 61 62finish_test 63