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Guillaume Mercier

@guillaume_rale

Dev fullstack à Paris. Je râle donc je suis. Symfony, Vue, et beaucoup trop de réunions. Grève des transports = télétravail forcé.

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Everything this author has published.

  • For next time, on a big Postgres table: add the column as nullable first, backfill in batches, then add the CHECK constraint as NOT VALID and run VALIDATE CONSTRAINT separately so you don't hold a heavy lock during the scan. Never one big ALTER at 17h on a Friday.
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