Learn how to use Create Index Concurrently on partitioned table in PostgreSQL. Our PostgreSQL Support team is here to help you with your questions and concerns.

PostgreSQL Create Index Concurrently on partitioned table

Did you know that we can create an index concurrently on a partitioned table by creating an index on the parent table without blocking write operations on the table or its partitions in PostgreSQL?

In other words, it offers efficient index creation and minimal disruption to ongoing transactions.

Let’s take a quick look at the steps to create an index concurrently on a partitioned table in PostgreSQL:

1. First, we have to make sure that we have a partitioned table in place. The partition should be based on a specific criterion like range, list, etc. This involves creating the partitions and defining the partitioning scheme.
2. Next, we have to connect to the PostgreSQL database where the partitioned table is via a database client or CLI.
3. Now, we have to run the following command to create the index concurrently on the partitioned table:

   CREATE INDEX CONCURRENTLY index_name
ON partitioned_table (column1, column2, ...);

   Here, we have to replace index_name with a name for the index and mention the columns on which the index should be created.
4. Now, we can monitor the progress of the index creation process with the pg_stat_progress_create_index system view. This view offers us information about the current state, percentage completion, and time remaining for index creation.
5. At this point, we can verify the index by querying the index metadata or carrying out queries against the partitioned table to check the impact on query performance.

Let us know in the comments if you need further help with this command.

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Conclusion

In summary, our Support Techs demonstrated how to use Create Index Concurrently on a partitioned table.