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”。
|