Question

我使用现有数据库通过MS SQL Server Management Tool生成＆＃34; CREATE＆＃34; -Script。然后我用变量替换了DB Name的字符串文字。但是，当我执行脚本时，它会在@ DBFullName＆＃34;附近继续说＆＃34;错误的语法。（首次使用＆＃39; NAME = @DBFullName ...＆＃39;）。我不知道问题是什么，除了可能性，这里禁止使用变量。

DECLARE @DBNAME nvarchar(MAX);
SET @DBNAME = 'MyDataBase'

DECLARE @DBFullName text;
SET @DBFullName = 'MySuperDataBase';

DECLARE @DBFileName text;
SET @DBFileName = N'C:\Program Files\Microsoft SQL Server\MSSQL10_50.DEVELOPMENT\MSSQL\DATA\\' + @DBName + '.mdf';
DECLARE @DBLogName text;
SET @DBLogName = N'C:\Program Files\Microsoft SQL Server\MSSQL10_50.DEVELOPMENT\MSSQL\DATA\\' + @DBName + '.ldf';

CREATE DATABASE [@DBNAME] ON  PRIMARY 
( NAME = @DBFullName + '_Data', FILENAME = @DBFileName , SIZE = 30720KB , MAXSIZE = UNLIMITED, FILEGROWTH = 10%)
 LOG ON 
( NAME = @DBFullName + '_Log', FILENAME = @DBLogName , SIZE = 2048KB , MAXSIZE = UNLIMITED, FILEGROWTH = 10%)
GO

Answer 1

您必须使用动态SQL。此外，您需要将text替换为nvarchar(max)，否则文字连接将无效。

这是完整的脚本：

DECLARE @DBNAME nvarchar(MAX);
SET @DBNAME = 'MyDataBase'

DECLARE @DBFullName nvarchar(max);
SET @DBFullName = 'MySuperDataBase';

DECLARE @DBFileName nvarchar(max);
SET @DBFileName = N'C:\Program Files\Microsoft SQL Server\MSSQL10_50.DEVELOPMENT\MSSQL\DATA\' + @DBName + '.mdf';
DECLARE @DBLogName nvarchar(max);
SET @DBLogName = N'C:\Program Files\Microsoft SQL Server\MSSQL10_50.DEVELOPMENT\MSSQL\DATA\' + @DBName + '.ldf';

DECLARE @SQL nvarchar(max);
SET @SQL = N'CREATE DATABASE [' + @DBNAME + '] ON PRIMARY (NAME = ' + @DBFullName + '_Data, FILENAME = ''' + @DBFileName+ ''' , SIZE = 30720KB , MAXSIZE = UNLIMITED, FILEGROWTH = 10%) LOG ON ( NAME = ' + @DBFullName + '_Log, FILENAME = ''' + @DBLogName + ''', SIZE = 2048KB , MAXSIZE = UNLIMITED, FILEGROWTH = 10%)'

PRINT @SQL

EXEC (@SQL)
GO

在我的机器上工作！：）

＆＃34;使用变量名称创建数据库＆＃34; -SQL失败

1 个答案: