写sql脚本，最难处理的是行列转换。有时写好的行列转换，当业务发生变化时，很多sql语句，存储过程要改。真是烦人，这动态的转换，我用过一些。好多了。-Write sql scr ipt, the ranks of the most difficult is the conversion. Sometimes written in the ranks of conversion, when the business changes, a lot of sql statements, stored procedures must be changed. Really annoying, this dynamic conversion, I used several. Better.