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ChrisPenner
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Mar 6, 2024
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| WITH x_ancestors(id) AS ( | ||
| $selectAncestorsOfX | ||
| ), y_ancestors(id) AS ( | ||
| $selectAncestorsOfY | ||
| ) SELECT id FROM ( | ||
| SELECT id FROM x_ancestors | ||
| INTERSECT | ||
| SELECT id FROM y_ancestors | ||
| ) LIMIT 1 |
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I haven't tested this, (maybe I need a table alias?)
Not sure there's any guarantee of correct row order coming out of an INTERSECT, so should probably find a way to do that or we might not get the LEAST common ancestor.
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See #4753 ;
This rewrites the in-haskell LCA detector to pure SQLite.
Not sure how well tested this function is right now, and don't have time to work on this since it's just something I noticed while fixing bugs, so I'll just leave this here in case someone has time to look at it 🤞🏼