rt-thread/components/external/SQLite-3.8.1/test/orderby4.test

# 2013 March 26
#
# 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 the optimizations that disable
# ORDER BY clauses work correctly on multi-value primary keys and
# unique indices when only some prefix of the terms in the key are
# used.  See ticket http://www.sqlite.org/src/info/a179fe74659
#


set testdir [file dirname $argv0]
source $testdir/tester.tcl
set ::testprefix orderby4

# Generate test data for a join.  Verify that the join gets the
# correct answer.
#
do_execsql_test 1.1 {
  CREATE TABLE t1(a, b, PRIMARY KEY(a,b));
  INSERT INTO t1 VALUES(1,1),(1,2);
  CREATE TABLE t2(x, y, PRIMARY KEY(x,y));
  INSERT INTO t2 VALUES(3,3),(4,4);
  SELECT a, x FROM t1, t2 ORDER BY 1, 2;
} {1 3 1 3 1 4 1 4}
do_execsql_test 1.2 {
  SELECT a, x FROM t1 CROSS JOIN t2 ORDER BY 1, 2;
} {1 3 1 3 1 4 1 4}
do_execsql_test 1.3 {
  SELECT a, x FROM t2 CROSS JOIN t1 ORDER BY 1, 2;
} {1 3 1 3 1 4 1 4}

do_execsql_test 2.1 {
  CREATE TABLE t3(a);
  INSERT INTO t3 VALUES(1),(1);
  CREATE INDEX t3a ON t3(a);
  CREATE TABLE t4(x);
  INSERT INTO t4 VALUES(3),(4);
  CREATE INDEX t4x ON t4(x);
  SELECT a, x FROM t3, t4 ORDER BY 1, 2;
} {1 3 1 3 1 4 1 4}
do_execsql_test 2.2 {
  SELECT a, x FROM t3 CROSS JOIN t4 ORDER BY 1, 2;
} {1 3 1 3 1 4 1 4}
do_execsql_test 2.3 {
  SELECT a, x FROM t4 CROSS JOIN t3 ORDER BY 1, 2;
} {1 3 1 3 1 4 1 4}

finish_test