This section describes the functions that can be used to manipulate temporal values. See Section10.3, “Date and Time Types”, for a description of the range of values each date and time type has and the valid formats in which values may be specified. NameDescriptionADDDATE()(v4.1.1)Add datesADDTIME()(v4.1.1)Add timeCO..
外联接。外联接可以是左向外联接、右向外联接或完整外部联接。 在 FROM 子句中指定外联接时,可以由下列几组关键字中的一组指定: LEFT JOIN 或 LEFT OUTER JOIN。 左向外联接的结果集包括 LEFT OUTER 子句中指定的左表的所有行,而不仅仅是联接列所匹配的行。如果左表的某行在右表中没有匹配行,则在相关联的结果集行中右表的所有选择列表列均..
How To Set the SQL Server Network Library in an ADO Connection StringView products that this article applies to.Article ID:238949Last Review:July 15, 2004Revision:3.3This article was previously published under Q238949SUMMARYSQL Server allows you to choose from a number of different network libraries that you can use wh..
简单的一个SQL语句: select ID,Name,Picture,Time,Duty from employ 我们可以创建一个存储过程: CREATE PROCEDURE sp_employ AS select ID,Name,Picture,Time,Duty from employ Go 而SQL语句: select ID,Name,Picture,Time,Duty from employ where ID=10230 对应的存储过程是:(用Alter替换我们已有的存储过程) ALTER PROCEDURE sp_employ @i..