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Support returning the rowcount for a given query?

See original GitHub issue

Hey! Thanks for this awesome library.

I’m replacing direct aiopg usage with it, but I ran into one issue that I can’t seem to solve. When executing a query aiopg returns an object with a .rowcount attribute. This is quite handy when using an INSERT ... ON CONFLICT query to know how many rows have been inserted.

I cannot seem to find out to how expose this information with this library. I’m guessing it might be more of an issue with asyncpg, but I was wondering if this is possible and if could be documented somewhere?

Issue Analytics

State:
Created 5 years ago
Comments:14 (10 by maintainers)

Top GitHub Comments

4reactions

tomchristiecommented, Jun 19, 2019

Currently we’re underspecifying the return type from execute, and returning the lastrowid value.

It looks like we probably ought to be returning a richer interface from that, with at least .lastrowid, and .rowcount attributes being supported. Does that sound like the right interface to you folks?

3reactions

gnatcommented, Aug 7, 2019

@tomchristie execute does not return feedback when deleting rows. Returning rows affected would be the standard MySQL way.

https://github.com/encode/databases/blob/88b381ae33bcb417b76b8df9149742cbbcc253b5/databases/backends/mysql.py#L134

Always returns 0 because the row no longer exists.

Is there any way to get feedback from a delete?

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