Get unique values using STRING_AGG in SQL Server 如果不考虑性能的话, 我觉得简单粗暴的方式就是直接 SPLIT 然后 DISTINCT 再 JOIN 回去.
SELECTAGE, STRING_AGG(Name,',') WITHINGROUP(ORDERBYNameASC)ASNameStringListFROMPersonGROUPBYAGE 1. 通过WITHIN GROUP 还可以对结果再排序哦. 4. 遇上 DISTINCT 如果出来的结果想要 distinct 的话 Produce DISTINCT values in STRING_AGG Get unique values using STRING_AGG in SQL Server 如果不考虑性能的...
NULLvalues found innamecells aren't returned in the result. Note If using the SQL Server Management Studio Query Editor, theResults to Gridoption can't implement the carriage return. Switch toResults to Textto see the result set properly. Results to Text are truncated to 256 characters by de...
newID.value IN ('O95833', 'Q96NY7-2') 结果: ProjectID value --- 2 Q96NY7-2 2 O95833 2 O95833 2 Q96NY7-2 2 O95833 2 Q96NY7-2 4 Q96NY7-2 4 Q96NY7-2 使用新添加的STRING_AGG函数(在 SQL Server 2017 中),如以下查询所示,我可以获得下面的结果集。 SELECT ProjectID, STRING_AGG( n...
return new SqlString(output); } public void Read(BinaryReader r) { intermediateResult = new StringBuilder(r.ReadString()); } public void Write(BinaryWriter w) { w.Write(this.intermediateResult.ToString()); } } 使用CREATE ASSEMBLY 语句在 SQL Server 中注册程序集 ...
另外,STRING_AGG函数还可以用于在动态SQL查询中构建动态的IN子句,以便根据其它查询结果来过滤数据。此外,该函数还可以在ETL过程中用于数据的清洗和处理,例如将多个行的数据转换为单个字段。 总的来说,STRING_AGG函数在SQL Server中有着广泛的应用场景,能够简化数据操作和处理过程,提高SQL查询的效率和灵活性。在实际项目...
综上所述,解决“'string_agg' is not a recognized built-in function name”错误的关键在于确认你的 SQL Server 版本是否支持该函数,并根据情况采取相应的措施。如果版本不支持,寻找替代方法或升级数据库版本将是你的选择。
NULL values found in name cells aren't returned in the result.Note If using the SQL Server Management Studio Query Editor, the Results to Grid option cannot implement the carriage return. Switch to Results to Text to see the result set properly. Results to Text are truncated to 256 ...
NULLvalues found innamecells aren't returned in the result. Note If using the SQL Server Management Studio Query Editor, theResults to Gridoption cannot implement the carriage return. Switch toResults to Textto see the result set properly. ...
问SQL Server2016中的STRING_AGG替代EN如何让自己在工作中变成不可替代的人。 这个似乎是成为职场人...