sql - SQL 无法连接

Question

我正在使用 SQL Server 2008 R2 并尝试运行以下命令：

SELECT CustCity AS City, Concat(CustLastName, \', \', CustFirstName) AS Customer
FROM Customers
ORDER BY CustCity, Customer

我收到的错误消息是：

消息 102，级别 15，状态 1，第 1 行
'，\' 附近的语法不正确。

据我所知，这是Concat应该如何工作的，所以我不明白为什么这不起作用。

任何人都可以帮忙吗？

score 2 · Accepted Answer

你可以这样尝试：-

SELECT CustCity AS City, CustLastName + '\' + CustFirstName AS Customer
FROM Customers
ORDER BY CustCity, Customer

SQL SERVER 2008 中不存在 CONCAT 函数。

score 1 · Accepted Answer

改为这样做：

SELECT CustCity AS City, CustLastName + '\' + CustFirstName AS Customer
FROM Customers
ORDER BY CustCity, Customer

score 1 · Accepted Answer

CONCAT()不是 SQL Server 2008 的功能。如果要连接 sql server 中的数据，应使用+符号：

SELECT CustCity AS City, CustLastName + ', ' + CustFirstName AS Customer
FROM Customers
ORDER BY CustCity, Customer;

请参阅SQL Fiddle with Demo。如果要包含\，则可以使用：

SELECT CustCity AS City, CustLastName + ' \ ' + CustFirstName AS Customer
FROM Customers
ORDER BY CustCity, Customer

score 0 · Accepted Answer

相当肯定您的单引号'引起了问题。问题是 CONCAT 仅存在于 SQL 2012 而不是 2008 中。

如果您使用的是 SQL 2012，则正确的语法是。

Concat(CustLastName, '\', CustFirstName) AS Customer

4 回答 4