sp_executesql得到执行sql语句的返回值

执行 sql语句，得到 变量的值

'
declare @Partition int;
);
);  

SET @SQLString = N'SELECT @RangeKeyOUT = $PARTITION.[pf_Fact_XM_XMBJXX] (20160925)';
SET @ParmDefinition = N' @RangeKeyOUT int OUTPUT';  

EXECUTE sp_executesql @SQLString, @ParmDefinition, @RangeKeyOUT=@Partition OUTPUT;
select @Partition