SELECTID,STRING_AGG(Value,', ')WITHINGROUP(ORDERBYValue)ASAggregatedValuesFROMExampleTableGROUPBYID; 1. 2. 3. 4. 5. 6. 7. 代码解释:使用WITHIN GROUP (ORDER BY Value)可以将拼接的字符串根据Value排序后再进行拼接。 总结 在SQL Server 中使用STRING_AGG实现字符串的动态拼接是一个非常实用的功能。...
The code samples in this article use theAdventureWorks2022orAdventureWorksDW2022sample database, which you can download from theMicrosoft SQL Server Samples and Community Projectshome page. A. Generate list of names separated in new lines The following example produces a list of names in a single ...
在SQL Server 2014中,你可以使用FOR XML PATH方法来实现字符串聚合功能,这是较早版本SQL Server中常用的技巧。 3. 给出替代方法的示例SQL代码 以下是一个使用FOR XML PATH方法来模拟STRING_AGG功能的示例代码: sql -- 示例表和数据 CREATE TABLE ExampleTable ( ID INT, Value NVARCHAR(50) ); INSERT INTO ...
Similar to the previous example, the following query finds the email addresses of employees, groups them by city, and sorts the emails alphabetically: SQL USEAdventureWorks2022; GOSELECTTOP10City, STRING_AGG(CONVERT(NVARCHAR(max), EmailAddress),';')WITHINGROUP(ORDERBYEmailAddressASC)ASEmailsFROMPer...
Similar to the previous example, the following query finds the email addresses of employees, groups them by city, and sorts the emails alphabetically: SQL USEAdventureWorks2022; GOSELECTTOP10City, STRING_AGG(CONVERT(NVARCHAR(max), EmailAddress),';')WITHINGROUP(ORDERBYEmailAddressASC)ASEmailsFROMPer...
SQL ServerSTRING_AGG 参考: How To UseSTRING_AGG– Concat Multiple Row Values In SQL Server 如果你想做string.join(',', collection) 的话, 那么就可以使用STRING_AGG了 1. 简单用 SELECTSTRING_ ... sql 数据 转载 mob604756e9d3bc 2021-09-15 12:02:00 ...
Transact-SQL 1 2 3 --example of what happens if you don't initialize @sql and leave it null declare@myVarnvarchar(max); select@myVar;-- see the default is null Now let’s add some commas to separate each value: Transact-SQL
Database Research & Development: Example of STRING_AGG() to concatenate Strings per each group in PostgreSQL, It is very similar to STUFF() of SQL Server.
sqlSELECTdepartment,GROUP_CONCAT(DISTINCTemployee_nameORDERBYemployee_nameDESCSEPARATOR'; ')ASemployeesFROMemployeesWHEREhire_date>'2020-01-01'GROUPBYdepartment; This example aggregates distinct employee names hired after January 1, 2020, into a semicolon-separated list for each department, ordered in ...
Similar to the previous example, the following query finds the email addresses of employees, groups them by city, and sorts the emails alphabetically: SQL USEAdventureWorks2022; GOSELECTTOP10City, STRING_AGG(CONVERT(NVARCHAR(max), EmailAddress),';')WITHINGROUP(ORDERBYEmailAddressASC)ASEmailsFROMPer...