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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 Partition: How to Find Which Partition Contains a Row

To find which partition contains a specific row in your PostgreSQL database, you can use the pg_partman extension which provides a set of functions to manage partitioned tables. Assuming you have already partitioned your table […]

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 Locks and Mutex: Locks, Latches, and Enqueues Explained

PostgreSQL can be tuned for concurrency and performance by adjusting various configuration parameters that affect the behavior of the database system. Here are some recommended steps for tuning PostgreSQL for concurrency and performance: How to […]

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 Optimizer Plan: How Plan Stability Works

In PostgreSQL, optimizer plan stability is a feature that allows the query planner to reuse a previously cached query plan for a SQL statement instead of generating a new plan. This can improve query performance […]

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