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 21# If SQLITE_OMIT_ALTERTABLE is defined, omit this file. 22ifcapable !altertable { 23 finish_test 24 return 25} 26 27do_execsql_test 1.1 { 28 CREATE TABLE t1(a,b); 29 INSERT INTO t1 VALUES(1,10), (2,20), (3,30), (2,22), (3, 33); 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 INSERT INTO t1 SELECT * FROM t1; 35 INSERT INTO t1 SELECT * FROM t1; 36 INSERT INTO t1 SELECT * FROM t1; 37 INSERT INTO t1 SELECT * FROM t1; 38 INSERT INTO t1 SELECT * FROM t1; 39 INSERT INTO t1 SELECT * FROM t1; 40 ALTER TABLE t1 ADD COLUMN c; 41 UPDATE t1 SET c=a*rowid+10000; 42 CREATE INDEX t1ab ON t1(a,b); 43 44 CREATE TABLE t2(x,y); 45 INSERT INTO t2 VALUES(4,44),(5,55),(6,66),(7,77); 46 INSERT INTO t2 SELECT x+4, (x+4)*11 FROM t2; 47 INSERT INTO t2 SELECT x+8, (x+8)*11 FROM t2; 48 INSERT INTO t2 SELECT x+16, (x+16)*11 FROM t2; 49 INSERT INTO t2 SELECT x+32, (x+32)*11 FROM t2; 50 INSERT INTO t2 SELECT x+64, (x+32)*11 FROM t2; 51 ALTER TABLE t2 ADD COLUMN z; 52 UPDATE t2 SET z=2; 53 CREATE UNIQUE INDEX t2zx ON t2(z,x); 54 55 EXPLAIN QUERY PLAN SELECT x FROM t1, t2 WHERE a=z AND c=x; 56} {/.*SCAN t1.*SEARCH t2.*/} 57do_execsql_test 1.2 { 58 EXPLAIN QUERY PLAN SELECT x FROM t2, t1 WHERE a=z AND c=x; 59} {/.*SCAN t1.*SEARCH t2.*/} 60do_execsql_test 1.3 { 61 ANALYZE; 62 EXPLAIN QUERY PLAN SELECT x FROM t1, t2 WHERE a=z AND c=x; 63} {/.*SCAN t1.*SEARCH t2.*/} 64do_execsql_test 1.4 { 65 EXPLAIN QUERY PLAN SELECT x FROM t2, t1 WHERE a=z AND c=x; 66} {/.*SCAN t1.*SEARCH t2.*/} 67 68finish_test 69