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SQLA Alchemy exists speed test
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| Assume `Ticket.query` == session.query(Ticket). | |
| This is done a table with 400,000+ rows and 0-40 rows where there is identical client_id fields. | |
| 1. bool(Ticket.query.filter_by(client_id=1111).count()) | |
| 2. Ticket.query.with_entities(exists().where(Ticket.client_id == 1111)).scalar() | |
| Results | |
| 1. 2. | |
| 20584 10622 | |
| 25934 7449 | |
| 20154 8009 | |
| 23342 7439 |
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