在 SQL Server 上的 else 块中创建过程

Question

我有一个 SQL 脚本，在其中生成数据库及其表、存储过程、视图等。我使用以下脚本生成数据库和所有内容。我能够生成表，但在存储过程中它给出了一个错误：

'CREATE/ALTER PROCEDURE' must be the first statement in a query batch.'

这是代码。我使用了一个if/else块，所以不能使用一个go语句。我检查数据库是否存在并采取适当的措施。任何人都有解决方案？

编辑后：

    IF EXISTS(SELECT name FROM sys.databases WHERE name = 'SampleDB')
        begin
        PRINT 'Exist.'
        end
        Else
        begin
        CREATE DATABASE SampleDB
        exec sp_dboption N'SampleDB', N'autoshrink', N'false'
        exec sp_dboption N'SampleDB', N'ANSI null default', N'false'
        exec sp_dboption N'SampleDB', N'recursive triggers', N'false'
        exec sp_dboption N'SampleDB', N'ANSI nulls', N'false'
        exec sp_dboption N'SampleDB', N'concat null yields null', N'false'
        exec sp_dboption N'SampleDB', N'cursor close on commit', N'false'
        exec sp_dboption N'SampleDB', N'default to local cursor', N'false'
        exec sp_dboption N'SampleDB', N'quoted identifier', N'false'
        exec sp_dboption N'SampleDB', N'ANSI warnings', N'false'
        exec sp_dboption N'SampleDB', N'auto create statistics', N'true'
        exec sp_dboption N'SampleDB', N'auto update statistics', N'true'

        DECLARE @sql nvarchar(MAX)
        SET @sql='
        use SampleDB

        CREATE TABLE [dbo].[BrandMaster] (
        [BrandId] [int] IDENTITY (1, 1) CONSTRAINT [PK_BrandMaster] PRIMARY KEY NOT NULL ,
        [BrandName] [nvarchar] (50) NOT NULL ,
        [BrandStatus] [bit] NOT NULL
        )
        CREATE TABLE [dbo].[BrandProductMaster] (
        [BrandProductId] [int] IDENTITY (1, 1) CONSTRAINT [PK_BrandProductMaster] PRIMARY KEY NOT NULL ,
        [ProductId] [int] NOT NULL ,
        [BrandId] [int] NOT NULL ,
        [Units] [nvarchar] (15) NULL ,
        [Status] [bit] NOT NULL
        )
        CREATE TABLE [dbo].[BrokerMaster] (
        [BrokerId] [int] IDENTITY (1, 1) CONSTRAINT [PK_BrokerMaster] PRIMARY KEY NOT NULL ,
        [BrokerName] [nvarchar] (100) NOT NULL ,
        [BrokerPercentage] [float] NOT NULL ,
        [BrokerAddress] [nvarchar] (100) NULL ,
        [BrokerTelephoneNo] [bigint] NULL ,
        [BrokerMobileNo] [bigint] NULL ,
        [BrokerFaxNo] [bigint] NULL ,
        [BrokerEmailId] [nvarchar] (75) NULL ,
        [BrokerStatus] [bit] NOT NULL
        )
        INSERT INTO [dbo].[BrokerMaster] ([BrokerName],[BrokerPercentage],[BrokerAddress],[BrokerEmailId],[BrokerStatus]) VALUES (''No Broker'',0.0,'''','''',1)
        ...........
.............
............
............../After creating list of tables,here goes for stored procedure and views


       EXECUTE (''CREATE PROCEDURE [dbo].[usp_ExtractAllBrokers] AS Select BrokerId, BrokerName, BrokerStatus,BrokerPercentage From BrokerMaster'')
    EXECUTE (''CREATE VIEW dbo.View_UserMaster AS SELECT UserId, UserCompanyId, UserFullName, Username,[Password],CASE UserStatus WHEN 1 THEN ''Active'' WHEN 0 THEN ''InActive'' END AS UserStatus, UserMobileNo, UserEmailId, CASE BrokerMaster WHEN 1 THEN ''Y'' WHEN 0 THEN ''N'' END AS BrokerMaster,CASE CompanyMaster WHEN 1 THEN ''Y'' WHEN 0 THEN ''N'' END AS CompanyMaster,CASE CustomerMaster WHEN 1 THEN ''Y'' WHEN 0 THEN ''N'' END AS CustomerMaster,CASE TaxMaster WHEN 1 THEN ''Y'' WHEN 0 THEN ''N'' END AS TaxMaster, CASE UserMaster WHEN 1 THEN ''Y'' WHEN 0 THEN ''N'' END AS UserMaster,CASE VendorMaster WHEN 1 THEN ''Y'' WHEN 0 THEN ''N'' END AS VendorMaster,CASE ProductMaster WHEN 1 THEN ''Y'' WHEN 0 THEN ''N'' END AS ProductMaster,CASE Purchase WHEN 1 THEN ''Y'' WHEN 0 THEN ''N'' END AS Purchase, CASE Sales WHEN 1 THEN ''Y'' WHEN 0 THEN ''N'' END AS Sales,CASE Reporting WHEN 1 THEN ''Y'' WHEN 0 THEN ''N'' END AS Reporting, UserCreatedOn FROM dbo.UserMaster'')

    exec sp_addextendedproperty N''MS_DiagramPane1'', N''[0E232FF0-B466-11cf-A24F-00AA00A3EFFF, 1.00]
    Begin DesignProperties = 
       Begin PaneConfigurations = 
          Begin PaneConfiguration = 0
             NumPanes = 4
             Configuration = "(H (1[40] 4[20] 2[20] 3) )"
          End
          Begin PaneConfiguration = 1
             NumPanes = 3
             Configuration = "(H (1 [50] 4 [25] 3))"
          End
          Begin PaneConfiguration = 2
             NumPanes = 3
             Configuration = "(H (1 [50] 2 [25] 3))"
          End
          Begin PaneConfiguration = 3
             NumPanes = 3
             Configuration = "(H (4 [30] 2 [40] 3))"
          End
          Begin PaneConfiguration = 4
             NumPanes = 2
             Configuration = "(H (1 [56] 3))"
          End
          Begin PaneConfiguration = 5
             NumPanes = 2
             Configuration = "(H (2 [66] 3))"
          End
          Begin PaneConfiguration = 6
             NumPanes = 2
             Configuration = "(H (4 [50] 3))"
          End
          Begin PaneConfiguration = 7
             NumPanes = 1
             Configuration = "(V (3))"
          End
          Begin PaneConfiguration = 8
             NumPanes = 3
             Configuration = "(H (1[56] 4[18] 2) )"
          End
          Begin PaneConfiguration = 9
             NumPanes = 2
             Configuration = "(H (1 [75] 4))"
          End
          Begin PaneConfiguration = 10
             NumPanes = 2
             Configuration = "(H (1[66] 2) )"
          End
          Begin PaneConfiguration = 11
             NumPanes = 2
             Configuration = "(H (4 [60] 2))"
          End
          Begin PaneConfiguration = 12
             NumPanes = 1
             Configuration = "(H (1) )"
          End
          Begin PaneConfiguration = 13
             NumPanes = 1
             Configuration = "(V (4))"
          End
          Begin PaneConfiguration = 14
             NumPanes = 1
             Configuration = "(V (2))"
          End
          ActivePaneConfig = 0
       End
       Begin DiagramPane = 
          Begin Origin = 
             Top = 0
             Left = 0
          End
          Begin Tables = 
             Begin Table = "UserMaster"
                Begin Extent = 
                   Top = 6
                   Left = 38
                   Bottom = 121
                   Right = 198
                End
                DisplayFlags = 280
                TopColumn = 1
             End
          End
       End
       Begin SQLPane = 
       End
       Begin DataPane = 
          Begin ParameterDefaults = ""
          End
          Begin ColumnWidths = 20
             Width = 284
             Width = 1500
             Width = 1500
             Width = 1500
             Width = 1500
             Width = 1500
             Width = 1500
             Width = 1500
             Width = 1500
             Width = 1500
             Width = 1500
             Width = 1500
             Width = 1500
             Width = 1500
             Width = 1500
             Width = 1500
             Width = 1500
             Width = 1500
             Width = 1500
             Width = 1500
          End
       End
       Begin CriteriaPane = 
          Begin ColumnWidths = 11
             Column = 3210
             Alias = 2595
             Table = 1170
             Output = 720
             Append = 1400
             NewValue = 1170
             SortType = 1350
             SortOrder = 1530
             GroupBy = 1350
             Filter = 1350
             Or = 2025
             Or = 1350
             Or = 1350
          End
       End
    End
    '', N''user'', N''dbo'', N''view'', N''View_UserMaster''
    exec sp_addextendedproperty N''MS_DiagramPaneCount'', 1, N''user'', N''dbo'', N''view'', N''View_UserMaster''
    '
    EXECUTE sp_executesql @sql
    END

在创建 VIEW 行给我错误

'Active' 附近的语法不正确。

Answer 1

我个人不喜欢自己这样做，因为我们公司强迫我们对我们所做的一切进行版本控制 - 因此我们应该知道对象是否存在并生成一个明确创建或更改对象的脚本。

话虽如此，如果您需要这样做，那么对于必须在批处理中单独执行的每个对象类型，您将需要执行单独的命令来更改/创建它们。例如：

IF OBJECT_ID(N'dbo.my_proc',N'P') IS NULL
EXECUTE ('CREATE PROCEDURE [dbo].[my_proc] AS SELECT 1');
EXECUTE ('GRANT EXEC ON [dbo].[my_proc] TO [some_user]');
ELSE
EXECUTE ('ALTER PROCEDURE [dbo].[my_proc] AS SELECT 2');
GO

编辑

根据您的附加信息，Max 的解决方案将解决您的问题。但是，正如他所提到的，这是一种非常糟糕的方法，因为您需要花费更多时间来确保正确引用而不是解决 SQL 错误。

一个更好的方法，也是我最初指出的，是将每个组件分成单独的语句，如下所示：

IF DB_ID(N'some_db') IS NOT NULL
BEGIN
PRINT 'EXISTS';
END
ELSE
BEGIN
IF OBJECT_ID(N'dbo.my_table',N'U') IS NULL
BEGIN
EXECUTE(
'CREATE TABLE [dbo].[my_table](
 [id] INT IDENTITY NOT NULL, 
 [name] NVARCHAR(8) NOT NULL,
 CONSTRAINT [pk_my_table] PRIMARY KEY([id]),
 CONSTRAINT [uk_my_table_name] UNIQUE([name])
 )');
END
IF OBJECT_ID(N'dbo.my_view',N'V')IS NULL
BEGIN
EXECUTE(
'CREATE VIEW [dbo].[my_view]
 AS
 SELECT [id],[name]
 FROM [dbo].[my_table]
 WHERE [name] LIKE ''A%'';'
);
END
IF OBJECT_ID(N'dbo.my_proc',N'P') IS NULL
BEGIN
EXECUTE(
'CREATE PROCEDURE [dbo].[my_proc](@id INT)
 AS
 SELECT [name]
 FROM [dbo].[my_view]
 WHERE [id] = @id;'
);
END
END
GO