带双引号的动态 SQL

Question

我正在尝试运行动态 SQL 语句，它适用于任何storename没有撇号的语句。但是，当其中storename包含撇号时，语法不正确，但是在这种情况下我无法使用动态 SQL。

我应该如何修改此语法storename以包含 apastrophe？

这是 DDL

Declare @TestHyphens Table(StoreName varchar(500),topItemSale varchar(500))

Insert Into @TestHyphens (StoreName, topItemSale) Values
('Bob''s Burger''s','Pen'), ('Jacks Coffee Shop','Pencil')
,('Larry''s Hair Shack','Rainbow'), ('Manny''s Sandwich Shop','Sunglasses')

Declare @sql nvarchar(4000), @storename varchar(500)

Declare db_cursor CURSOR FOR
Select StoreName
FROM @TestHyphens

OPEN db_cursor
FETCH NEXT FROM db_cursor INTO @storename

While @@FETCH_STATUS = 0
BEGIN

        Set @storename = REPLACE(@storename, '''', '''''''''');

        SET @storename = CHAR(39)+CHAR(39)+@storename+CHAR(39)+CHAR(39);

        SET @SQL = N'Select * from @TestHyphens where storename IN ('+@storename+ N')'

        Print @storename
        Print @sql

    FETCH NEXT FROM db_cursor INTO @storename

END

Close db_cursor
DEALLOCATE db_cursor

和打印语句产生：

''Bob''''s Burger''''s''
Select * from @TestHyphens where storename IN (''Bob''''s Burger''''s'')
''Jacks Coffee Shop''
Select * from @TestHyphens where storename IN (''Jacks Coffee Shop'')
''Larry''''s Hair Shack''
Select * from @TestHyphens where storename IN (''Larry''''s Hair Shack'')
''Manny''''s Sandwich Shop''
Select * from @TestHyphens where storename IN (''Manny''''s Sandwich Shop'')

正如你所看到的，这些被错误地连字符 -

''Manny''''s Sandwich Shop''
''Larry''''s Hair Shack''
''Bob''''s Burger''''s''

Answer 1

您可以临时更改 QUOTED_IDENTIFIER。

DECLARE @TestHyphens TABLE(StoreName varchar(500),topItemSale varchar(500))

INSERT INTO @TestHyphens (StoreName, topItemSale) VALUES
('Bob''s Burger''s','Pen'),
('Jacks Coffee Shop','Pencil'),
('Larry''s Hair Shack','Rainbow'), 
('Manny''s Sandwich Shop','Sunglasses');

SET QUOTED_IDENTIFIER OFF

SELECT StoreName, TopItemSale 
FROM   @TestHyphens 
WHERE  StoreName = "Bob's Burger's"

SET QUOTED_IDENTIFIER ON

| StoreName      | topItemSale |
|----------------|-------------|
| Bob's Burger's | Pen         |

雷克斯特在这里

在光标内使用

DECLARE @sql nvarchar(MAX), @storename varchar(500)

DECLARE db_cursor CURSOR FOR
SELECT StoreName
FROM #TestHyphens

OPEN db_cursor
FETCH NEXT FROM db_cursor INTO @storename

WHILE @@FETCH_STATUS = 0
BEGIN

    SET @SQL = N'SET QUOTED_IDENTIFIER OFF '
               + N'Select * from #TestHyphens where StoreName = "' + @storename + N'"'
               + N'SET QUOTED_IDENTIFIER ON';

    EXECUTE SP_EXECUTESQL @SQL;    

    FETCH NEXT FROM db_cursor INTO @storename
END

CLOSE db_cursor
DEALLOCATE db_cursor

这是结果：

| StoreName             | topItemSale |
|-----------------------|-------------|
| Bob's Burger's        | Pen         |
| Jacks Coffee Shop     | Pencil      |
| Larry's Hair Shack    | Rainbow     |
| Manny's Sandwich Shop | Sunglasses  |

雷克斯特在这里