PostgreSQL

When handling monetary values in any financial software system, precision and accuracy in storage and computation are paramount. PostgreSQL offers robust solutions for dealing effectively with currency, ensuring data integrity and operational precision. This in-depth guide will discuss best practices for using the Money type in PostgreSQL, including suggestions for storage, retrieval, and operations on …

PostgreSQL Money Type: Best practices for storing currency values and related operations Read More »

Understanding the operations available in PostgreSQL is essential for any database developer or administrator looking to harness the full power of SQL in managing and querying data. Among these operations, the set operators “EXCEPT” and “EXCEPT ALL” play a crucial role in retrieving unique or distinct rows by comparing the results of two SELECT statements. …

Understanding EXCEPT and EXCEPT ALL in PostgreSQL Read More »

When working with SQL databases, it’s often necessary to check for the presence of rows in a subquery or a related table that match certain criteria. In PostgreSQL, the EXISTS condition is a powerful tool that can be used for this purpose. EXISTS is a boolean operator that checks whether a subquery returns any rows, …

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Rename a table when the name no longer suitably describes its contents or when you need to follow new naming conventions. Altering a table name in PostgreSQL is a straightforward process that can be accomplished with the ALTER TABLE statement, but there are important considerations to ensure consistency and prevent disruptions to applications that depend …

Renaming Tables in PostgreSQL: A Simple Guide Read More »

The PostgreSQL CASE statement offers a flexible means for applying conditional logic within SQL queries. Comparable to if-else statements found in many programming languages, the CASE statement allows for complex decision-making processes during data retrieval. Whether you’re new to PostgreSQL or a seasoned database professional, understanding how to leverage this conditional construct can significantly enhance …

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Copying tables within a PostgreSQL database can be an essential task for database management and data manipulation. Whether you are duplicating a table for backup purposes, creating a new table with modified structure or content, or troubleshooting, understanding how to effectively copy tables is pivotal. In PostgreSQL, the process of copying tables involves several methods …

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Correlated subqueries are a powerful feature in SQL that allow for complex and dynamic queries where the result of a subquery depends on the data from the outer query. PostgreSQL, as a full-featured relational database management system, provides robust support for such queries, enabling developers and database administrators to write more flexible and intuitive SQL …

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Floating-point numbers are used extensively in computing to represent non-integer numbers. Those familiar with databases and data types will often encounter decisions involving the choice between different types of floating-point representations. In PostgreSQL, two primary data types are used for floating-point numbers: REAL and DOUBLE PRECISION. Understanding their differences, benefits, and appropriate use cases is …

PostgreSQL Floating-Point Numbers: Differences and use cases for REAL and DOUBLE PRECISION. Read More »

Dropping a database in PostgreSQL is a significant operation that permanently removes a database and all of its contents from the PostgreSQL management system. This operation should be approached with caution, as it cannot be undone. In this comprehensive guide, we will explore various aspects of the “DROP DATABASE” command in PostgreSQL, covering its syntax, …

PostgreSQL Drop database Read More »

Partitioning in PostgreSQL is a technique used to divide large tables into smaller, more manageable pieces, while still allowing them to be accessed as a single table. Hash partitioning is one specific type of partitioning that distributes rows across partitions based on the hash value of a specified column or columns. This method is particularly …

Hash Partitioning in PostgreSQL Read More »