A Deep Dive into PostgreSQL’s TRUNCATE Statement

Most relational database management systems support the TRUNCATE statement, and PostgreSQL is no exception.

That said, PostgreSQL has a few differences in the way its TRUNCATE statement works when compared to many other RDBMSs.

In this article, we’ll explore the various features of PostgreSQL’s implementation of the TRUNCATE statement, along with examples to demonstrate.

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3 Ways to Concatenate Strings in PostgreSQL

When working with databases (and software in general), string concatenation is the operation of joining character strings end-to-end. For example if we have two words, we can combine them into one.

PostgreSQL provides us with multiple ways to concatenate strings. Below are two functions and one operator that we can use to concatenate strings in PostgreSQL.

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Indexes on Expressions in PostgreSQL: A Quick Overview

In PostgreSQL, indexes on expressions (also known as “functional indexes”) allow you to create an index not just on a column but on the result of an expression or function applied to a column (or multiple columns). This can significantly improve query performance when the same expression is used frequently in queries, especially for complex calculations or transformations.

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Prepared Statements in PostgreSQL: A Complete Guide

Prepared statements are a feature in PostgreSQL that can improve performance and security when executing repetitive SQL queries.

By creating a prepared statement, the server can parse and plan the query once and reuse it multiple times, leading to faster execution. Prepared statements also help in preventing SQL injection attacks by safely handling user input.

In this article, we’ll explore prepared statements in PostgreSQL, discuss how to create and use them, and cover other important considerations such as query planning and cleaning up statements.

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Understanding Partial Indexes in PostgreSQL

Adding indexes to a table is a well established practice for speeding up regular queries in relational databases such as PostgreSQL. While they can do wonders for query performance, indexes can also take up a lot of disk space.

Today we’re going to be looking at a particular type of index that can help reduce the impact on disk space, and query performance – the partial index.

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