Postgres disable index

To disable an index in PostgreSQL, you can use the ALTER INDEX statement. Here is an example of how to disable an index:

ALTER INDEX index_name DISABLE;

Replace “index_name” with the name of the index that you want to disable.

Disabling an index removes it from the database’s query plans, preventing the query optimizer from using it. This can be useful in situations where you want to test the performance impact of removing an index without permanently dropping it.

Once an index is disabled, it will not be used by the query executor until it is re-enabled. To re-enable a disabled index, you can use the following statement:

ALTER INDEX index_name ENABLE;

Here is an example of how to enable a previously disabled index:

ALTER INDEX index_name ENABLE;

Remember to replace “index_name” with the name of the index you want to enable.

It’s important to note that disabling an index can have a significant impact on query performance, especially if the index is frequently used by queries. Disabling an index should only be done after careful consideration and testing.