SQL SERVER先判断视图是否存在然后再创建视图的语句_Sql Server

SQL SERVER先判断视图是否存在然后再创建视图的语句

2020-04-05 15:05whsnow Sql Server

SQL SERVER中先判断视图是否存在，使用IF NOT EXISTS，然后再创建视图，使用create view，整个过程如下

如果我们的语句为：

				?

									IF NOT EXISTS(SELECT 1 FROM sys.views WHERE name='Report_IndividualTicket')

									BEGIN

									create view Report_IndividualTicket

									as

									SELECT Ticket.TicketNumber, Ticket.TicketID,

									GisProcess.StageName,

									Content.DtReceived, Content.ContentText

									FROM

									(GisProcess INNER JOIN Ticket

									ON GisProcess.TicketID=Ticket.TicketID)

									INNER JOIN Content

									ON Ticket.ContentID=Content.ContentID

									END

会提示以下错误：

Msg 156, Level 15, State 1, Line 4
Incorrect syntax near the keyword 'view'.

出现这个错误的原因是：create view 这一句必须是批处理中的第一句。

所以可以将该语句修改为：

				?

									IF EXISTS(SELECT 1 FROM sys.views WHERE name='Report_IndividualTicket')

									DROP VIEW Report_IndividualTicket

									GO

									create view Report_IndividualTicket

									as

									SELECT Ticket.TicketNumber, Ticket.TicketID,

									GisProcess.StageName,

									Content.DtReceived, Content.ContentText

									FROM

									(GisProcess INNER JOIN Ticket

									ON GisProcess.TicketID=Ticket.TicketID)

									INNER JOIN Content

									ON Ticket.ContentID=Content.ContentID

									GO