MYSQL存储过程获取记录总数

CREATE DEFINER = 'qtfrad'@'%'
PROCEDURE JiuHeng.GetRecordCount(in tablename varchar(800),in sCondition varchar(500),out counts int)
BEGIN

set @strSQL=concat('select count(1) from ',tablename);

set @strSQL=concat(@strSQL,' where ',sCondition);

prepare sqlstmt from @strSQL;

set counts = @strSQL;

execute sqlstmt;

select counts;

deallocate prepare sqlstmt;

END