SQL

Some rule and todo list to Optimize SQL REF https://www.pgmustard.com/blog/indexing-best-practices-postgresql

What is Compound indexes in PostgreSQL? A compound index (also known as a composite index or a multi-column index) refers to an index that is created on two or more columns of a table. It allows PostgreSQL to quickly find rows that match a query condition based on the values in multiple columns, which can […]

Don’t index every column If indexes are so useful, why don’t we add them to every column? There are a few good reasons, but a big one is that indexes add overhead to writes. Not only do indexes need to be kept up to date when we write to the table, but they can also […]