There is a table with 10 columns and a form with filters for each column. How to organize indexes?

When there is a table with 10 columns and filters on each of them, creating indexes requires a balance between query performance and index update costs.

Main recommendations:

• Indexes on individual columns: Create separate indexes on columns that are frequently used in filters and have high selectivity.

• Composite indexes: If filters on multiple columns are often used together, consider creating composite indexes, taking into account the order of columns in the WHERE clause.

• Query analysis: Use EXPLAIN to understand which indexes are actually used.

• Covering indexes: If possible, create indexes that cover entire queries to avoid accessing the table.

• Avoid redundant indexes: Do not create indexes on all columns without analysis, as this slows down inserts and updates.

Example: if columns A and B are frequently filtered together, and C separately, you can create an index on (A, B) and a separate index on C.

You can also consider using partial indexes or indexing tailored to the specifics of your data and queries.