我正在尝试编写一个存储过程,该过程将从任意表和列中删除前导和尾随引号。我一直收到一条错误,说明没有声明表名。
这是SP
create table [dbo].[test] (id nvarchar(20))
insert into dbo.test values ('"07617966004766"')
go
CREATE PROCEDURE sp_stripDoubleQuotes
@tableName sysname,
@columnName sysname
AS
BEGIN
SET NOCOUNT ON;
UPDATE @tableName
SET @columnName = SUBSTRING(@columnName, 2, LEN(@columnName))
WHERE LEFT(@columnName, 1) = '"'
UPDATE @tableName
SET @columnName = SUBSTRING(@columnName, 1, LEN(@columnName)-1)
WHERE RIGHT(@columnName, 1) = '"'
END
GO
exec [dbo].[sp_stripDoubleQuotes] N'[dbo].[test]', N'[id]'
select * from test
这是一个小提琴的链接: link to fiddle
答案 0 :(得分:6)
CREATE PROCEDURE sp_stripDoubleQuotes
@tableName sysname,
@columnName sysname,
@SQL varchar(MAX)
AS
BEGIN
SET NOCOUNT ON;
SET @SQL =
'UPDATE ' + '[' + @tableName +']' +
'SET' + '[' + @columnName +']' +'= SUBSTRING(' +'[' + @columnName +']' +', 2, LEN(' +'[' + @columnName +']' +'))
WHERE LEFT(' + '[' + @columnName +']' +', 1) = '+'''"'''
--PRINT(@SQL)
EXEC (@SQL)
SET @SQL =
'UPDATE ' + '[' + @tableName +']' +
'SET' + '[' + @columnName +']' +'= SUBSTRING(' + '[' + @columnName +']' +', 1, LEN(' + '[' + @columnName + ']' +')-1)
WHERE RIGHT(' + '[' + @columnName +']' +', 1) = '+'''"'''
--PRINT(@SQL)
EXEC (@SQL)
END
GO
exec [dbo].[sp_stripDoubleQuotes] N'test', N'id' -- exec [dbo].[sp_stripDoubleQuotes] N'[dbo].[test]', N'[id]'
更新第二篇:我添加了[]
来包装表和列,因为你的表和列名都有空格。谢谢@Sean Lange和@Richard
更新第3名:正如@ [benjamin moskovits](xD)所提到的,如果您使用硬编码括号,则正确的执行命令为exec [dbo].[sp_stripDoubleQuotes] N'test', N'id'
。尝试添加或删除括号和print
,以便在执行之前查看语法是否正确。
答案 1 :(得分:0)
CREATE PROCEDURE sp_stripDoubleQuotes
@tableName sysname,
@columnName sysname
AS
BEGIN
SET NOCOUNT ON;
declare @QuerytoExecute varchar(1000)
set @QuerytoExecute="UPDATE "+@tableName+"
SET "+@columnName+" = SUBSTRING("+@columnName+", 2, LEN("+@columnName+"))
WHERE LEFT("+@columnName+", 1) = '""'";
exec (@QuerytoExecute);
set @QuerytoExecute="
UPDATE "+@tableName+"
SET "+@columnName+" = SUBSTRING("+@columnName+", 1, LEN("+@columnName+")-1)
WHERE RIGHT("+@columnName+", 1) = '""'";
exec (@QuerytoExecute);
END
GO