When adding a new column, you can temporarily set it as nullable then gradually fill it with new values. This maximizes your table availability since you only need to keep locks for a short period of time. If you can segment your data using, for example, sequential IDs, you can update rows incrementally in batches. With this in mind, let’s look at a few strategies that you can use to effectively update a large number of rows in your table in PostgreSQL: 1. Strategies To Update Tables In PostgresSQL Ex: conversion from VARCHAR(32) to VARCHAR(64).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |