select 語句直接把列轉換爲字符串

SQL Server 2017+

SELECT @a = STRING_AGG([msg], '') WITHIN GROUP (ORDER BY [priority] ASC)
FROM bla
where   autofix = 0

SQL Server 2005+

SELECT @a = (SELECT [msg] + ''
             FROM   bla
             WHERE  autofix = 0
             ORDER  BY [priority] ASC
             FOR XML PATH(''), TYPE).value('.', 'nvarchar(max)') 

 

https://stackoverflow.com/questions/15138593/nvarchar-concatenation-index-nvarcharmax-inexplicable-behavior/15163136#15163136

 

https://docs.microsoft.com/en-us/sql/t-sql/functions/string-agg-transact-sql?view=sql-server-ver15