test/with2.test

# 2014 January 11
#
# 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 the WITH clause.
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl
set ::testprefix with2

do_execsql_test 1.0 {
  CREATE TABLE t1(a);
  INSERT INTO t1 VALUES(1);
  INSERT INTO t1 VALUES(2);
}

do_execsql_test 1.1 {
  WITH x1 AS (SELECT * FROM t1)
  SELECT sum(a) FROM x1;
} {3}

do_execsql_test 1.2 {
  WITH x1 AS (SELECT * FROM t1)
  SELECT (SELECT sum(a) FROM x1);
} {3}

do_execsql_test 1.3 {
  WITH x1 AS (SELECT * FROM t1)
  SELECT (SELECT sum(a) FROM x1);
} {3}

do_execsql_test 1.4 {
  CREATE TABLE t2(i);
  INSERT INTO t2 VALUES(2);
  INSERT INTO t2 VALUES(3);
  INSERT INTO t2 VALUES(5);

  WITH x1   AS (SELECT i FROM t2),
       i(a) AS (
         SELECT min(i)-1 FROM x1 UNION SELECT a+1 FROM i WHERE a<10
       )
  SELECT a FROM i WHERE a NOT IN x1
} {1 4 6 7 8 9 10}

finish_test