1 files changed, 154 insertions, 0 deletions
diff --git a/test/where6.test b/test/where6.test
new file mode 100644
index 0000000..83e975b
--- /dev/null
+++ b/test/where6.test
@@ -0,0 +1,154 @@
+# 2007 June 8
+#
+# 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 that terms in the ON clause of
+# a LEFT OUTER JOIN are not used with indices.  See ticket #3015.
+#
+# $Id: where6.test,v 1.2 2008/04/17 19:14:02 drh Exp $
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+# Build some test data
+#
+do_test where6-1.1 {
+  execsql {
+    CREATE TABLE t1(a INTEGER PRIMARY KEY,b,c);
+    INSERT INTO t1 VALUES(1,3,1);
+    INSERT INTO t1 VALUES(2,4,2);
+    CREATE TABLE t2(x INTEGER PRIMARY KEY);
+    INSERT INTO t2 VALUES(3);
+
+    SELECT * FROM t1 LEFT JOIN t2 ON b=x AND c=1;
+  }
+} {1 3 1 3 2 4 2 {}}
+do_test where6-1.2 {
+  execsql {
+    SELECT * FROM t1 LEFT JOIN t2 ON x=b AND c=1;
+  }
+} {1 3 1 3 2 4 2 {}}
+do_test where6-1.3 {
+  execsql {
+    SELECT * FROM t1 LEFT JOIN t2 ON x=b AND 1=c;
+  }
+} {1 3 1 3 2 4 2 {}}
+do_test where6-1.4 {
+  execsql {
+    SELECT * FROM t1 LEFT JOIN t2 ON b=x AND 1=c;
+  }
+} {1 3 1 3 2 4 2 {}}
+
+ifcapable explain {
+  do_test where6-1.5 {
+     explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON x=b AND 1=c}
+  } [explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON b=x AND c=1}]
+  do_test where6-1.6 {
+     explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON x=b WHERE 1=c}
+  } [explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE c=1}]
+}
+
+do_test where6-1.11 {
+  execsql {
+    SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE c=1;
+  }
+} {1 3 1 3}
+do_test where6-1.12 {
+  execsql {
+    SELECT * FROM t1 LEFT JOIN t2 ON x=b WHERE c=1;
+  }
+} {1 3 1 3}
+do_test where6-1.13 {
+  execsql {
+    SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE 1=c;
+  }
+} {1 3 1 3}
+
+
+
+do_test where6-2.1 {
+  execsql {
+    CREATE INDEX i1 ON t1(c);
+
+    SELECT * FROM t1 LEFT JOIN t2 ON b=x AND c=1;
+  }
+} {1 3 1 3 2 4 2 {}}
+do_test where6-2.2 {
+  execsql {
+    SELECT * FROM t1 LEFT JOIN t2 ON x=b AND c=1;
+  }
+} {1 3 1 3 2 4 2 {}}
+do_test where6-2.3 {
+  execsql {
+    SELECT * FROM t1 LEFT JOIN t2 ON x=b AND 1=c;
+  }
+} {1 3 1 3 2 4 2 {}}
+do_test where6-2.4 {
+  execsql {
+    SELECT * FROM t1 LEFT JOIN t2 ON b=x AND 1=c;
+  }
+} {1 3 1 3 2 4 2 {}}
+
+ifcapable explain {
+  do_test where6-2.5 {
+     explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON x=b AND 1=c}
+  } [explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON b=x AND c=1}]
+  do_test where6-2.6 {
+     explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON x=b WHERE 1=c}
+  } [explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE c=1}]
+}
+
+
+do_test where6-2.11 {
+  execsql {
+    SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE c=1;
+  }
+} {1 3 1 3}
+do_test where6-2.12 {
+  execsql {
+    SELECT * FROM t1 LEFT JOIN t2 ON x=b WHERE c=1;
+  }
+} {1 3 1 3}
+do_test where6-2.13 {
+  execsql {
+    SELECT * FROM t1 LEFT JOIN t2 ON x=b WHERE 1=c;
+  }
+} {1 3 1 3}
+do_test where6-2.14 {
+  execsql {
+    SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE 1=c;
+  }
+} {1 3 1 3}
+
+# Ticket [ebdbadade5b]:
+# If the ON close on a LEFT JOIN is of the form x=y where both x and y
+# are indexed columns on tables to left of the join, then do not use that 
+# term with indices to either table.
+#
+do_test where6-3.1 {
+  db eval {
+    CREATE TABLE t4(x UNIQUE);
+    INSERT INTO t4 VALUES('abc');
+    INSERT INTO t4 VALUES('def');
+    INSERT INTO t4 VALUES('ghi');
+    CREATE TABLE t5(a, b, c, PRIMARY KEY(a,b));
+    INSERT INTO t5 VALUES('abc','def',123);
+    INSERT INTO t5 VALUES('def','ghi',456);
+
+    SELECT t4a.x, t4b.x, t5.c, t6.v
+      FROM t4 AS t4a
+           INNER JOIN t4 AS t4b
+           LEFT JOIN t5 ON t5.a=t4a.x AND t5.b=t4b.x
+           LEFT JOIN (SELECT 1 AS v) AS t6 ON t4a.x=t4b.x
+     ORDER BY 1, 2, 3;
+  }
+} {abc abc {} 1 abc def 123 {} abc ghi {} {} def abc {} {} def def {} 1 def ghi 456 {} ghi abc {} {} ghi def {} {} ghi ghi {} 1}
+
+finish_test