TheGROUP BYclause is required if theSTRING_AGGfunction isn't the only item in theSELECTlist. E. Generate list of emails per towns The following query finds the email addresses of employees and groups them by city: SQLCopy USEAdventureWorks2022; GOSELECTTOP10City, STRING_AGG(CONVERT(NVARCHAR(...
Server 2017在sqlalchemcy中使用string_agg()函数 、、 当前的任务是使用SqlAlchemy和Server 2017将值聚合为逗号分隔的字符串:因此,我使用string_agg()来这样做: query = session.query(Table.key函数的参数2无效。Server][SQL Server]Argument data type nvarchar is invalid for argument 2 of string_...
CREATE OR ALTER FUNCTION [dbo].[fn_DistinctList] ( @String NVARCHAR(MAX), @Delimiter char(1) ) RETURNS NVARCHAR(MAX) WITH SCHEMABINDING AS BEGIN DECLARE @Result NVARCHAR(MAX); WITH MY_CTE AS ( SELECT Distinct(value) FROM STRING_SPLIT(@String, @Delimiter) ) SELECT @Result = STRING_AGG(...
--1. 创建fn_Split函数IFEXISTS(SELECT*FROMdbo.sysobjectsWHEREid=OBJECT_ID('fn_Split')AND(TYPE='FN'ORTYPE='TF'ORTYPE='IF') )DROPFUNCTIONfn_SplitGOCREATEFUNCTION[dbo].[fn_Split](@strVARCHAR(MAX),@separatorVARCHAR(10) )RETURNSTABLEASRETURN(SELECTB.idFROM( (--A 的作用只是生成 '<v>a</...
TheGROUP BYclause is required if theSTRING_AGGfunction isn't the only item in theSELECTlist. E. Generate list of emails per towns The following query finds the email addresses of employees and groups them by city: SQL USEAdventureWorks2022; GOSELECTTOP10City, STRING_AGG(CONVERT(NVARCHAR(max)...
TheGROUP BYclause is required if theSTRING_AGGfunction isn't the only item in theSELECTlist. E. Generate list of emails per towns The following query finds the email addresses of employees and groups them by city: SQL USEAdventureWorks2022; GOSELECTTOP10City, STRING_AGG(CONVERT(NVARCHAR(max)...
TheGROUP BYclause is required if theSTRING_AGGfunction isn't the only item in theSELECTlist. E. Generate list of emails per towns The following query finds the email addresses of employees and groups them by city: SQL USEAdventureWorks2022; GOSELECTTOP10City, STRING_AGG(CONVERT(NVARCHAR(max)...
2、MS SQL Server的2017新增了STRING_AGG()是一个聚合函数 它将由指定的分隔符分隔将字符串行连接成一个字符串。 它不会在结果字符串的末尾添加分隔符。 SELECTname,string_agg(code,';')filesFROM@table1GROUPBYname; 1. 二、一个字符串拆分成多行 ...
The Microsoft documentation for this function: https://learn.microsoft.com/en-us/sql/t-sql/functions/string-agg-transact-sql?view=sql-server-ver16 It’s also smart enough not to add a separator at the end of the final string. Additionally, it implicitly converts to strings then concatenates...
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。