public void test_false() throws Exception {
WallProvider provider = new MySqlWallProvider();
provider.getConfig().setCommentAllow(true);
Assert.assertTrue(provider.checkValid(//
"select _t0.`ownUser` as _c0, _t0.`showTime` as _c1, _t0.`showType` as _c2, " + //
" _t0.`itemId` as _c3, _t0.`queueId` as _c4 " + //
"from `itemshow_queue` as _t0 " + //
"where ( _t0.`isShowed` = 'F' and _t0.`showTime` <= ? ) " + //
" and _t0.`ownUser` in ( " + //