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models: use "passive_deletes=True" for cascading deletes #173

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slint opened this issue Apr 26, 2020 · 0 comments

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Type: enhancement

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slint commented Apr 26, 2020

Read "ORM-level “delete” cascade vs. FOREIGN KEY level “ON DELETE” cascade" note in https://docs.sqlalchemy.org/en/13/orm/cascades.html#delete for the explanation.

TLDR: without this parameter, instead of a fast DB-level cascade trigger, a slow ORM-level cascade takes place

slint added the Type: enhancement label

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