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电子工程专辑2 年

mysql的varchar字段最大长度真的是65535吗？-电子工程专辑

在mysql建表sql里，我们经常会有定义字符串类型的需求。 比方说user表里的名字，就是个字符串。mysql里有两个类型比较适合这个场景。 char和varchar。 声明它们都需要在字段边上加个数组，比如char(100)和varchar(100)，这个100是指 ...
Ars Technica13 年

SQL Server: char or varchar - what would you do? - Ars Technica

What would you do...? Have a table (SQL Server 2008) that the user wants to record a fixed 8 character string in. At first glance, a CHAR seems the obvious selection since this value (an 8 ...
Ars Technica20 年

ASP/SQL Server - Error converting data type varchar to int?

So I have this page. The page is taking form-submitted data and saving it to a SQL Server database via stored procedure.Just one problem - every time I ...