有人可以在这个简单的查询中找到语法错​​误吗？

Question

请帮我解决此错误。

SELECT StateProvince,STRING_AGG(AddressID, ',') WITHIN GROUP (ORDER BY AddressID)
FROM [SalesLT].[Address] GROUP BY StateProvince;

我无法在此找到错误，但它说

  

＆＃39;（＆＃39;。

附近的语法不正确

Answer 1

FOR SQL SERVER 2017

SELECT StateProvince,
       STRING_AGG(AddressID, ',') WITHIN GROUP (ORDER BY AddressID) AS AddressID
FROM [SalesLT].[Address] GROUP BY StateProvince;

<强>样本

  

http://dbfiddle.uk/?rdbms=sqlserver_2017&fiddle=69e5f9e9c5f3cab62e4b2eb9fb678299

FOR SQL SERVER 2017年以下

SELECT
      StateProvince, 
      AddressID = STUFF((
          SELECT ',' + CAST(md.AddressID AS NVARCHAR)
          FROM [SalesLT].[Address] md
          WHERE m.StateProvince = md.StateProvince
          ORDER BY AddressID
          FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 1, '')
FROM [SalesLT].[Address] m
Group by StateProvince

样本

  

http://dbfiddle.uk/?rdbms=sqlserver_2012&fiddle=a1722450c70c946e9b53ae23785f4919

Answer 2

我无法看到与您收到的消息相关的错误。对于大数据，它会抱怨大约8000字节的限制。这在MS SQL 2017，AdventureWorks示例数据库（不是具有较少数据的精简数据库）下工作正常：

SELECT StateProvinceID,
       STRING_AGG(cast(AddressID as varchar(MAX)), ',') WITHIN GROUP (ORDER BY AddressID) as AdressIDS
FROM [Person].[Address] 
GROUP BY StateProvinceID;

Answer 3

将数据库从SQL 2008R2升级到2017后出现相同的问题。通过将兼容性级别设置为110（或更高？）来解决此问题