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+# 2012 September 18
+#
+# 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.
+#
+#***********************************************************************
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+do_test in5-1.1 {
+  execsql {
+    CREATE TABLE t1x(x INTEGER PRIMARY KEY);
+    INSERT INTO t1x VALUES(1),(3),(5),(7),(9);
+    CREATE TABLE t1y(y INTEGER UNIQUE);
+    INSERT INTO t1y VALUES(2),(4),(6),(8);
+    CREATE TABLE t1z(z TEXT UNIQUE);
+    INSERT INTO t1z VALUES('a'),('c'),('e'),('g');
+    CREATE TABLE t2(a INTEGER, b INTEGER, c TEXT, d TEXT);
+    INSERT INTO t2 VALUES(1,2,'a','12a'),(1,2,'b','12b'),
+                         (2,3,'g','23g'),(3,5,'c','35c'),
+                         (4,6,'h','46h'),(5,6,'e','56e');
+    CREATE TABLE t3x AS SELECT x FROM t1x;
+    CREATE TABLE t3y AS SELECT y FROM t1y;
+    CREATE TABLE t3z AS SELECT z FROM t1z;
+    SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t1z ORDER BY c;
+  }
+} {12a 56e}
+do_test in5-1.2 {
+  execsql {
+    SELECT d FROM t2 WHERE a IN t1y AND b IN t1x AND c IN t1z ORDER BY d;
+  }
+} {23g}
+do_test in5-1.3 {
+  execsql {
+    SELECT d FROM t2 WHERE a IN t3x AND b IN t3y AND c IN t3z ORDER BY d;
+  }
+} {12a 56e}
+
+
+do_test in5-2.1 {
+  execsql {
+    CREATE INDEX t2abc ON t2(a,b,c);
+    SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t1z ORDER BY d;
+  }
+} {12a 56e}
+do_test in5-2.2 {
+  execsql {
+    SELECT d FROM t2 WHERE a IN t1y AND b IN t1x AND c IN t1z ORDER BY d;
+  }
+} {23g}
+do_test in5-2.3 {
+  regexp {OpenEphemeral} [db eval {
+    EXPLAIN SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t1z
+  }]
+} {0}
+do_test in5-2.4 {
+  execsql {
+    SELECT d FROM t2 WHERE a IN t3x AND b IN t3y AND c IN t3z ORDER BY d;
+  }
+} {12a 56e}
+do_test in5-2.5.1 {
+  regexp {OpenEphemeral} [db eval {
+    EXPLAIN SELECT d FROM t2 WHERE a IN t3x AND b IN t1y AND c IN t1z
+  }]
+} {1}
+do_test in5-2.5.2 {
+  regexp {OpenEphemeral} [db eval {
+    EXPLAIN SELECT d FROM t2 WHERE a IN t1x AND b IN t3y AND c IN t1z
+  }]
+} {1}
+do_test in5-2.5.3 {
+  regexp {OpenEphemeral} [db eval {
+    EXPLAIN SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t3z
+  }]
+} {1}
+
+do_test in5-3.1 {
+  execsql {
+    DROP INDEX t2abc;
+    CREATE INDEX t2ab ON t2(a,b);
+    SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t1z ORDER BY d;
+  }
+} {12a 56e}
+do_test in5-3.2 {
+  execsql {
+    SELECT d FROM t2 WHERE a IN t1y AND b IN t1x AND c IN t1z ORDER BY d;
+  }
+} {23g}
+do_test in5-3.3 {
+  regexp {OpenEphemeral} [db eval {
+    EXPLAIN SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t1z
+  }]
+} {0}
+
+do_test in5-4.1 {
+  execsql {
+    DROP INDEX t2ab;
+    CREATE INDEX t2abcd ON t2(a,b,c,d);
+    SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t1z ORDER BY d;
+  }
+} {12a 56e}
+do_test in5-4.2 {
+  execsql {
+    SELECT d FROM t2 WHERE a IN t1y AND b IN t1x AND c IN t1z ORDER BY d;
+  }
+} {23g}
+do_test in5-4.3 {
+  regexp {OpenEphemeral} [db eval {
+    EXPLAIN SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t1z
+  }]
+} {0}
+
+
+do_test in5-5.1 {
+  execsql {
+    DROP INDEX t2abcd;
+    CREATE INDEX t2cbad ON t2(c,b,a,d);
+    SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t1z ORDER BY d;
+  }
+} {12a 56e}
+do_test in5-5.2 {
+  execsql {
+    SELECT d FROM t2 WHERE a IN t1y AND b IN t1x AND c IN t1z ORDER BY d;
+  }
+} {23g}
+do_test in5-5.3 {
+  regexp {OpenEphemeral} [db eval {
+    EXPLAIN SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t1z
+  }]
+} {0}
+
+finish_test