[sqlite] Remove obsolete reference version 3.8.7.4.

third_party/sqlite/sqlite-src-3080704/test/tkt3757.test

-# 2009 March 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.
-#
-#***********************************************************************
-#
-# Ticket #3757:  The cost functions on the query optimizer for the
-# IN operator can be improved.
-#
-# $Id: tkt3757.test,v 1.1 2009/03/29 00:13:04 drh Exp $
-
-set testdir [file dirname $argv0]
-source $testdir/tester.tcl
-
-# Evaluate SQL.  Return the result set followed by the
-# and the number of full-scan steps.
-#
-proc count_steps {sql} {
-  set r [db eval $sql]
-  lappend r scan [db status step] sort [db status sort]
-}
-
-# Construct tables
-#
-do_test tkt3757-1.1 {
-  db eval {
-     CREATE TABLE t1(x INTEGER, y INTEGER, z TEXT);
-     CREATE INDEX t1i1 ON t1(y,z);
-     INSERT INTO t1 VALUES(1,2,'three');
-     CREATE TABLE t2(a INTEGER, b TEXT);
-     INSERT INTO t2 VALUES(2, 'two');
-     ANALYZE;
-     SELECT * FROM sqlite_stat1 ORDER BY 1, 2;
-  }
-} {t1 t1i1 {1 1 1} t2 {} 1}
-
-# Modify statistics in order to make the optimizer then that:
-#
-#   (1)  Table T1 has about 250K entries
-#   (2)  There are only about 5 distinct values of T1.
-#
-# Then run a query with "t1.y IN (SELECT ..)" in the WHERE clause.
-# Make sure the index is used.
-#
-do_test tkt3757-1.2 {
-  db eval {
-    DELETE FROM sqlite_stat1;
-    INSERT INTO sqlite_stat1 VALUES('t1','t1i1','250000 50000 30');
-  }
-  count_steps {
-    SELECT * FROM t1 WHERE y IN (SELECT a FROM t2)
-  }
-} {1 2 three scan 0 sort 0}
-
-finish_test