我正在研究SQL Server存储过程。
这是代码中工作的一部分:
INSERT INTO [MYBASE].dbo.[DatabaseName]
([Employee No_], [From Date], [To Date], [Description], [Quantity],[First Name], [Last Name])
SELECT
EmployeeNo, FromDate, ToDate, Description, Quantity,
FirstName, LastName
FROM
#User_Data
现在,我需要更改此部分:
INSERT INTO [MYBASE].dbo.[DatabaseName]
其中DatabaseName
将是可变的。
我已经尝试过这个:
CREATE TABLE #User_Data
(
User_id INTEGER,
FirstName VARCHAR(30),
LastName VARCHAR(30),
EmployeeNo VARCHAR(20),
Description VARCHAR(50),
FromDate DATETIME,
ToDate DATETIME
)
INSERT INTO #User_Data
SELECT u.fname, u.lname, u.employee_no, ... (this works)
DECLARE @InsertStatement VARCHAR(MAX)
SET @InsertStatement =
'INSERT INTO [MYBASE].dbo.[' + @DatabaseName + ']
([Employee No_], [From Date], [To Date], [Description],
[Quantity], [First Name], [Last Name])
SELECT
EmployeeNo, FromDate, ToDate, Description,
Quantity, FirstName, LastName
FROM
#User_Data'
EXEC(@InsertStatement)
但它不起作用。这是我得到的错误:
将 varchar 转换为数据类型数值的算术溢出错误。
请帮忙。
我一直在用同义词来做这件事,以避免不得不在引号内写:
Declare @MyDB as nvarchar(100) = 'myDBName'
if exists(select * from sys.synonyms where name = N'TableinMyDB') drop synonym [TableinMyDB];
exec('CREATE SYNONYM [TableinMyDB] FOR [' + @MyDB + '].dbo.[myTableName];');
INSERT INTO [TableinMyDB]
(
[Employee No_]
,[From Date]
,[To Date]
,[Description]
,[Quantity]
,[First Name]
,[Last Name]
)
SELECT
EmployeeNo
,FromDate
,ToDate
,Description
,Quantity
,FirstName
,LastName
FROM #User_Data