Optimize queries that contain "WHERE rowid IN (x, y, z...)" by using an intkey btree to store the (x, y, z...) set instead of an index btree. (CVS 5760)

FossilOrigin-Name: 803a1736d56b3c07b8ad38715fe0e39196ecc507

test/in4.test

@@ -0,0 +1,93 @@
+# 2008 September 1
+#
+# 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.
+#
+#***********************************************************************
+#
+# $Id: in4.test,v 1.1 2008/10/02 13:50:56 danielk1977 Exp $
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+do_test in4-1.1 {
+  execsql {
+    CREATE TABLE t1(a, b);
+    CREATE INDEX i1 ON t1(a);
+  }
+} {}
+do_test in4-1.2 {
+  execsql {
+    SELECT * FROM t1 WHERE a IN ('aaa', 'bbb', 'ccc');
+  }
+} {}
+do_test in4-1.3 {
+  execsql {
+    INSERT INTO t1 VALUES('aaa', 1);
+    INSERT INTO t1 VALUES('ddd', 2);
+    INSERT INTO t1 VALUES('ccc', 3);
+    INSERT INTO t1 VALUES('eee', 4);
+    SELECT b FROM t1 WHERE a IN ('aaa', 'bbb', 'ccc');
+  }
+} {1 3}
+do_test in4-1.4 {
+  execsql {
+    SELECT a FROM t1 WHERE rowid IN (1, 3);
+  }
+} {aaa ccc}
+do_test in4-1.5 {
+  execsql {
+    SELECT a FROM t1 WHERE rowid IN ();
+  }
+} {}
+do_test in4-1.6 {
+  execsql {
+    SELECT a FROM t1 WHERE a IN ('ddd');
+  }
+} {ddd}
+
+do_test in4-2.1 {
+  execsql {
+    CREATE TABLE t2(a INTEGER PRIMARY KEY, b TEXT);
+    INSERT INTO t2 VALUES(-1, '-one');
+    INSERT INTO t2 VALUES(0, 'zero');
+    INSERT INTO t2 VALUES(1, 'one');
+    INSERT INTO t2 VALUES(2, 'two');
+    INSERT INTO t2 VALUES(3, 'three');
+  }
+} {}
+
+do_test in4-2.2 {
+  execsql { SELECT b FROM t2 WHERE a IN (0, 2) }
+} {zero two}
+
+do_test in4-2.3 {
+  execsql { SELECT b FROM t2 WHERE a IN (2, 0) }
+} {zero two}
+
+do_test in4-2.4 {
+  execsql { SELECT b FROM t2 WHERE a IN (2, -1) }
+} {-one two}
+
+do_test in4-2.5 {
+  execsql { SELECT b FROM t2 WHERE a IN (NULL, 3) }
+} {three}
+
+do_test in4-2.6 {
+  execsql { SELECT b FROM t2 WHERE a IN (1.0, 2.1) }
+} {one}
+
+do_test in4-2.7 {
+  execsql { SELECT b FROM t2 WHERE a IN ('1', '2') }
+} {one two}
+
+do_test in4-2.8 {
+  execsql { SELECT b FROM t2 WHERE a IN ('', '0.0.0', '2') }
+} {two}
+
+finish_test
+