Data Types in PostgreSQL: Array Data Types || PostgreSQL Full Playlist #56

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Learn PostgreSQL Array Data Types with syntax, examples, and queries. Covers insert, update, search, slices, and functions.

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Description
In this video, we explore Array Data Types in PostgreSQL in detail. Arrays are powerful when you need to store multiple values in a single column, whether for lists, schedules, or multi-dimensional grids.

We’ll start by understanding what arrays are and how they work in PostgreSQL. Then, we’ll cover declaration methods using both the square bracket ([]) notation and SQL standard ARRAY keyword. You’ll learn how to insert array values using both literal and constructor syntax, and how to work with multi-dimensional arrays.

Next, we dive into accessing array elements using indexes and slices, retrieving dimensions with functions like array_dims and array_length, and modifying arrays by replacing values, updating slices, or concatenating arrays.

We also explore searching within arrays using ANY, ALL, generate_subscripts, array_position, and the overlap (&&) operator. You’ll see practical examples for querying salaries, schedules, and more.

Finally, we’ll discuss best practices for using arrays, their pros and cons, and when you should consider normalizing data instead. This session is part of the PostgreSQL Full Playlist so you can master every concept step-by-step.

If you want to level up your PostgreSQL skills, this video is for you! 🚀

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📌 Chapters Covered:
00:00 - Introduction
00:17 - Declaring Arrays in Tables
01:30 - Inserting Array Values
02:17 - Accessing Array Elements
02:46 - Get Array Dimensions and Length
03:13 - Modifying Array Values
04:14 - Array Concatenation
05:16 - Searching in Arrays
06:11 - Array Position Search
06:44 - Arrays in Functions
07:35 - Conclusion