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+# 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