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摘要： select *from (select row_number() over (order by ousp_id) as rowNum,* from YZOrder_OutStock_Product where outs_no=@order_no)) as t where ... 阅读全文

摘要： Command对象的ExecuteNonQuery()方法、ExecuteReader()方法及ExecuteScalar()方法的返回值分别为什么？ExecuteNonQuery()为影响的记录行数ExecuteReader()为DataReaderExecuteScalar()为sql语句中第一... 阅读全文