If you need any more information, do let me know, and I'll be happy to help. Every derived table must have its own alias MYSQL Error: Invalid use of group function How to Solve sql Error: Every derived table must have its own alias How to Solve Oracle error: not a group by expression How to Solve Error: not a group by expression How to Solve You can’t specify target table for update. just creating the list by looping over the result set), it'd be nice to be able to alias nested queries within peewee. User-1690009347 posted I have the following view in mysql select leagues.LeagueID from leagues where ((leagues.StartDate < curdate()) and (leagues.EndDate. While I can work around this by performing the Group_Concat outside of peewee (i.e. "OperationalError: (1248, 'Every derived table must have its own alias')"Ī solution would be to have an alias pool for queries that make use of the 'from_' function, for nested queries.Ī test to demonstrate an error when using nested queries in peewee (MySQL): When running the same script, while using the MySQL config, you will get the following error upon visiting the root of the app. The error is pretty clear, add an alias to that table: SELECT FROM ( SELECT appid FROM apps UNION ALL SELECT appid FROM reviews ) AS t - < - this GROUP BY appid HAVING COUNT () 1 Note that: The GROUP BY with SELECT is not recommended and it is not complied with ANSI SQL. You see this error when you use the FROM. Using SQLITE, upon visiting the root of the app ( you will get a list of IDs resulting from the Group_Concat (1,2,3,4,5). Every derived table must have its own alias is an error that often occurs when you try to run a query in MySQL. Every derived table must have its own alias You can’t specify target table for update. ![]() ![]() Please see the below link to a gist that demonstrates this issue. The issue is - as the error message describes - that the table that is derived after using the 'from_' function is not provided with an alias. ![]() While playing around with the 'from_' function that was introduced recently (I believe it was pretty recent (see !topic/peewee-orm/FSHhd9lZvUE), and ran into a bit of an issue when attempting to use the same query that worked under SQLITE, on a MySQL database.
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