将Sql server存储过程迁移到MySQL

Question

我在Sql server下面有以下存储过程，我需要转换成My sql ..请帮我怎么做？

CREATE PROCEDURE [dbo].[Getsomething_data]  
    -- Add the parameters for the stored procedure here
    @UserID nvarchar(250),-- from 10 to 14
    @Limit varchar(10),
    @Offset varchar(10),
    @Fields varchar(max)
AS
BEGIN
declare @dynamicQuery as varchar(4000)

    set @dynamicQuery = '
    with cte
    as
    (
    SELECT  top (10000000000000)  ROW_NUMBER() over(Order By CreateddateTime Desc) as rownum ,' + @Fields + '
    FROM         SMSDetails where UserID =''' + @UserID + ''' and IsDeleted=0 and TypeOfMassage=''S'' 
    )
    select * from cte where (rownum between ' + @Offset +' and ' + @Limit + ')'
exec(@dynamicQuery)