SQL Server 2016中的STRING_AGG替换[重复]

Question

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我想用一个之间的分隔符和一些前缀来聚合单列值。下面是尝试的代码。

SELECT concat('TNB/IAG/',STRING_AGG(WF_ValStr, '/')) AS Result
    FROM wfattrdata where wf_id=35262472 and  WF_AttrID in (28,29,30,31,33);

我可以在最新的MSSql版本中获得以下预期结果。

TNB/IAG/1/2/3/4/5

如何替换上面的查询以使其在SQL Server 2016中工作？

Answer 1

检查下面的STUFF，XML代码-

SELECT DISTINCT CONCAT('TNB/IAG/',T1.results) AS EXPECTED_RESULT FROM
(
select REPLACE(STUFF(CAST((
                    SELECT   ' /' +CAST(c.WF_ValStr AS VARCHAR(MAX))
                    FROM (  
                            SELECT distinct WF_ValStr
                            FROM wfattrdata
                        ) c
                    FOR XML PATH(''), TYPE) AS VARCHAR(MAX)), 1, 2, ''),' ','') AS results
                    from wfattrdata t) T1;