摘要：
一、遇到的问题：关于SQL中的cast、convert函数解决方法：CAST ( expression AS data_type )例：cast(cast(ONLineQty*100/(select sum(ONLineQty) from @tablevar) as decimal(10,2)) as varchar) +'%'CONVERT (data_type[(length)], expression [, style])例：SELECT CONVERT(varchar(10),getdate(),121) now 得：2005-12-31SELECT CONVERT(v 阅读全文