Mysql join multiple rows into one11/6/2023 See STRING_AGG() Function in PostgreSQL for more examples. We can also remove duplicate values (with the DISTINCT clause), specify an order for the results (with the ORDER BY clause), change the separator, etc. Postgres has the STRING_AGG() function: SELECT STRING_AGG(PetName, ',') See MariaDB GROUP_CONCAT() for more examples. However, one thing that MariaDB has over MySQL is the LIMIT clause, which provides us with the ability to limit the number of results in the list. Like MySQL’s function of the same name, we can also do things like, remove duplicate values (with the DISTINCT clause), specify an order for the results (with the ORDER BY clause), change the separator, etc. Like MySQL, MariaDB also has a GROUP_CONCAT() function: SELECT GROUP_CONCAT(PetName) See How to Return Query Results as a Comma Separated List in SQL Server for more examples. We can also remove duplicate values, specify an order for the results, change the delimiter, etc. Result: Rock,Jazz,Country,Pop,Blues,Hip Hop,Rap,Punk SQL Server has the STRING_AGG() function to return our results in a comma separated list: SELECT STRING_AGG(Genre, ',') AS Result FROM Genres See LISTAGG() Function in Oracle for more examples. Like MySQL, Oracle Database also allows us to remove duplicate values, specify an order for the results, specify a different separator, etc. Result: Hunold, Ernst, Austin, Pataballa, Lorentz Oracle Database has the LISTAGG() function: SELECT LISTAGG(last_name, ', ') See GROUP_CONCAT() Function in MySQL for more examples. We can also do things like, remove duplicate values (with the DISTINCT clause), specify an order for the results (with the ORDER BY clause), and specify a different delimiter. Result: Fluffy,Fetch,Scratch,Wag,Tweet,Fluffy,Bark,Meow MySQL has the GROUP_CONCAT() function that allows us to output our query results in a comma separated list: SELECT GROUP_CONCAT(PetName) That is, we can use such a function to convert each row into a separate list item, within a comma separated list.īelow are examples of how to achieve this in some of the more popular RDBMSs. Most of the major RDBMSs have a function that enables us to return our query results as a comma separated list.
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