必须声明作为过程参数的标量变量答案

【问题标题】：Must declare the scalar variable which is a procedure parameter必须声明作为过程参数的标量变量
【发布时间】：2015-03-02 20:17:53
【问题描述】：

如果它不存在，我正在尝试创建一个过程。此过程采用date 类型的参数：

IF NOT EXISTS (SELECT * FROM sys.objects WHERE type = 'P' AND name = 'GetAllManualInsertionsFromDate')

CREATE PROCEDURE volumetrie.GetAllManualInsertionsFromDate
    @date date
AS
BEGIN
    SELECT i.Id, i.EntryDate, c.CustomerNumber, i.NbEnvelopes As envelope, i.NbBoxes As box,
            c.Name, YEAR(@date) As dateYear, MONTH(@date) As dateMonth, s.Raccourci as area
    FROM volumetrie.InsertionManuelle As i
        INNER JOIN dbo.Customers As c ON i.ClientId = c.CustId
        INNER JOIN dbo.Sites s ON i.SiteCode = s.CodeSite
    WHERE i.EntryDate >= @date
END

我在使用@date 参数的所有三个地方都收到错误：

必须声明标量变量@date

我在 BEGIN 关键字上也遇到另一个错误，这可能会导致另一个错误：

“BEGIN”附近的语法不正确。期待外部。

你知道我做错了吗？

【问题讨论】：

创建过程必须是批处理中的唯一语句。这不是你在这里所拥有的。如果该过程已经存在，您需要使用您的条件来删除该过程，或者使用动态 sql 生成您的过程。
谢谢，我会记住动态 SQL 作为替代方案。

标签： sql sql-server tsql stored-procedures

【解决方案1】：

IF  EXISTS (SELECT * FROM sys.objects WHERE type = 'P' AND name = 'GetAllManualInsertionsFromDate')
drop procedure GetAllManualInsertionsFromDate
go

CREATE PROCEDURE volumetrie.GetAllManualInsertionsFromDate
    @date date
AS
BEGIN
    SELECT i.Id, i.EntryDate, c.CustomerNumber, i.NbEnvelopes As envelope, i.NbBoxes As box,
            c.Name, YEAR(@date) As dateYear, MONTH(@date) As dateMonth, s.Raccourci as area
    FROM volumetrie.InsertionManuelle As i
        INNER JOIN dbo.Customers As c ON i.ClientId = c.CustId
        INNER JOIN dbo.Sites s ON i.SiteCode = s.CodeSite
    WHERE i.EntryDate >= @date
END

正如@SeanLange 所说

【讨论】：

【解决方案2】：

这是正确的做法：

-- =============================================
-- Create basic stored procedure template
-- =============================================

-- Drop stored procedure if it already exists
IF EXISTS (
  SELECT * 
    FROM INFORMATION_SCHEMA.ROUTINES 
   WHERE SPECIFIC_SCHEMA = N'volumetrie'
     AND SPECIFIC_NAME = N'GetAllManualInsertionsFromDate' 
)
   DROP PROCEDURE volumetrie.GetAllManualInsertionsFromDate
GO

CREATE PROCEDURE volumetrie.GetAllManualInsertionsFromDate
    @date date
AS
    SELECT i.Id, i.EntryDate, c.CustomerNumber, i.NbEnvelopes As envelope, i.NbBoxes As box,
            c.Name, YEAR(@date) As dateYear, MONTH(@date) As dateMonth, s.Raccourci as area
    FROM volumetrie.InsertionManuelle As i
        INNER JOIN dbo.Customers As c ON i.ClientId = c.CustId
        INNER JOIN dbo.Sites s ON i.SiteCode = s.CodeSite
    WHERE i.EntryDate >= @date
GO

【讨论】：

为什么这是检查存储过程是否存在的正确方法？和我做的有什么区别？
@BishopBarber 这是微软的做法，尝试使用模板浏览器。