为什么TEXT字段不能存取大于4K的数据
2008-01-05 10:48:59 来源:WEB开发网核心提示:Q. Why can't I access more than 4K of data in a TEXT field in SQL Server?为什么TEXT字段不能存取大于4K的数据?A. Probably because you haven't set the TEXTSIZE parameter
Q. Why can't I access more than 4K of data in a TEXT field in SQL Server?
为什么TEXT字段不能存取大于4K的数据?
A. Probably because you haven't set the TEXTSIZE parameter. SET TEXTSIZE <n>
Specifies the size, in bytes, of text data to be returned with a SELECT statement. If you specify a TEXTSIZE of 0, the size is reset to the default (4K). Setting TEXTSIZE affects the global variable @@TEXTSIZE.
The DB-Library variable DBTEXTLIMIT also limits the size of text data returned with a SELECT statement. If DBTEXTLIMIT is set to a smaller size than TEXTSIZE, only the amount specified by DBTEXTLIMIT is returned. For more information, see Microsoft SQL Server PRogramming DB-Library for C.
也许你没有设置TEXTSIZE参数
SET TEXTSIZE <n>
用字节数指定SELECT语句返回的文本大小,假如指定大小为0,则设为默认值(4K),设置TEXTSIZE参数影响全局变量@@TEXTSIZE
DB-Library变量DBTEXTLIMIT也限制SELECT语句返回的文本大小,假如DBTEXTLIMIT比TEXTSIZE小,则按DBTEXTLIMIT的设置返回数据,更多的内容请看“Microsoft SQL Server Programming DB-Library for C”。
更多精彩
赞助商链接