Import SQLite 3.7.6.3.

third_party/sqlite/src/test/where2.test

 # 2005 July 28
 #
 # 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.
 #
 #***********************************************************************
@@ skipping 602 matching lines @@
   } 1000
   ifcapable subquery {
     do_test where2-9.2 {
       count {
         SELECT * FROM t10 WHERE a=1 AND (b=2 OR b=3)
       }
     } {1 2 2 1 3 3 7}
   }
 }
 
+# Indices with redundant columns
+#
+do_test where2-11.1 {
+  execsql {
+    CREATE TABLE t11(a,b,c,d);
+    CREATE INDEX i11aba ON t11(a,b,a,c); -- column A occurs twice.
+    INSERT INTO t11 VALUES(1,2,3,4);
+    INSERT INTO t11 VALUES(5,6,7,8);
+    INSERT INTO t11 VALUES(1,2,9,10);
+    INSERT INTO t11 VALUES(5,11,12,13);
+    SELECT c FROM t11 WHERE a=1 AND b=2 ORDER BY c;
+  }
+} {3 9}
+do_test where2-11.2 {
+  execsql {
+    CREATE INDEX i11cccccccc ON t11(c,c,c,c,c,c,c,c); -- repeated column
+    SELECT d FROM t11 WHERE c=9;
+  }
+} {10}
+do_test where2-11.3 {
+  execsql {
+    SELECT d FROM t11 WHERE c IN (1,2,3,4,5);
+  }
+} {4}
+do_test where2-11.4 {
+  execsql {
+    SELECT d FROM t11 WHERE c=7 OR (a=1 AND b=2) ORDER BY d;
+  }
+} {4 8 10}
+
+
 finish_test