PostgreSQL Partition: How to Partition a Large Table Without a Long-Running Lock

When partitioning a large table in PostgreSQL, the table needs to be locked to prevent any updates, inserts, or deletes while the partitioning operation is in progress. This can result in a long-running lock, which […]

PostgreSQL Bulk Data Loading: Best Practices

When loading bulk data into a PostgreSQL database, there are several best practices you can follow to ensure the process is efficient, reliable, and doesn’t impact the performance of your database. Here are some of […]

PostgreSQL Recursive Queries and Hierarchical Data: Optimal Implementation

To implement recursive queries and hierarchical data optimally in PostgreSQL, you can follow these steps: This query selects all the nodes in the hierarchy, along with their name and level. By following these steps, you […]

PostgreSQL TRACK_ACTIVITY_QUERY_SIZE: How to Tune It in postgresql.conf

In PostgreSQL, the track_activity_query_size parameter determines the maximum size of the SQL query that can be recorded in the pg_stat_activity view. By default, this parameter is set to 1024 bytes, which means that only the […]

PostgreSQL Reduce WAL: Increasing Checkpoint Distance

In PostgreSQL, the WAL (Write-Ahead Logging) is a critical component of the database system that ensures durability and consistency of data. However, frequent WAL writes can impact the performance of the database, especially if the […]

PostgreSQL “as of” queries: How to Implement Them

In PostgreSQL, you can implement “as of” queries using the SQL standard’s temporal query features, which allow you to query a table as it existed at a specific point in time. There are two main […]

PostgreSQL Slow Query: How to Compute Its Cost

The cost of a slow query in PostgreSQL can be estimated by the Query Planner, which uses statistics about the data in the tables being queried to make predictions about the query execution time. The […]

PostgreSQL Global Indexes: How They Are Implemented

In PostgreSQL, global indexes are implemented using a shared-nothing architecture, which means that the index data is partitioned and distributed across multiple physical nodes or “shards.” This allows for parallel query processing and improved performance […]

PostgreSQL synchronous_commit and Synchronous Standby Replication: How to Implement

PostgreSQL provides the option of synchronous replication to ensure that transactions are committed on the standby servers before they are acknowledged as being committed on the primary server. This can provide an added level of […]

PostgreSQL Hard Parsing: When Optimization Takes More Time

In PostgreSQL, hard parsing optimization typically takes more time when a query is submitted for the first time or when the database statistics or query planner configuration has changed significantly. This is because hard parsing […]

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