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+# 2011 September 16
+#
+# 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 script is testing correlated subqueries
+#
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+ifcapable !subquery {
+ finish_test
+ return
+}
+
+do_test subquery2-1.1 {
+ execsql {
+ BEGIN;
+ CREATE TABLE t1(a,b);
+ INSERT INTO t1 VALUES(1,2);
+ INSERT INTO t1 VALUES(3,4);
+ INSERT INTO t1 VALUES(5,6);
+ INSERT INTO t1 VALUES(7,8);
+ CREATE TABLE t2(c,d);
+ INSERT INTO t2 VALUES(1,1);
+ INSERT INTO t2 VALUES(3,9);
+ INSERT INTO t2 VALUES(5,25);
+ INSERT INTO t2 VALUES(7,49);
+ CREATE TABLE t3(e,f);
+ INSERT INTO t3 VALUES(1,1);
+ INSERT INTO t3 VALUES(3,27);
+ INSERT INTO t3 VALUES(5,125);
+ INSERT INTO t3 VALUES(7,343);
+ COMMIT;
+ }
+ execsql {
+ SELECT a FROM t1
+ WHERE b IN (SELECT x+1 FROM (SELECT DISTINCT f/(a*a) AS x FROM t3));
+ }
+} {1 3 5 7}
+do_test subquery2-1.2 {
+ execsql {
+ CREATE INDEX t1b ON t1(b);
+ SELECT a FROM t1
+ WHERE b IN (SELECT x+1 FROM (SELECT DISTINCT f/(a*a) AS x FROM t3));
+ }
+} {1 3 5 7}
+
+do_test subquery2-1.11 {
+ execsql {
+ SELECT a FROM t1
+ WHERE +b=(SELECT x+1 FROM (SELECT DISTINCT f/(a*a) AS x FROM t3));
+ }
+} {1}
+do_test subquery2-1.12 {
+ execsql {
+ SELECT a FROM t1
+ WHERE b=(SELECT x+1 FROM (SELECT DISTINCT f/(a*a) AS x FROM t3));
+ }
+} {1}
+
+do_test subquery2-1.21 {
+ execsql {
+ SELECT a FROM t1
+ WHERE +b=(SELECT x+1 FROM
+ (SELECT DISTINCT f/d AS x FROM t2 JOIN t3 ON d*a=f))
+ }
+} {1 3 5 7}
+do_test subquery2-1.22 {
+ execsql {
+ SELECT a FROM t1
+ WHERE b=(SELECT x+1 FROM
+ (SELECT DISTINCT f/d AS x FROM t2 JOIN t3 ON d*a=f))
+ }
+} {1 3 5 7}
+
+
+finish_test