Lesson 138: PostgreSQL String Concatenation Methods CONCAT, CONCAT WS, FORMAT, DOUBLE PIPES

Lesson 138 covers the most commonly used string concatenation methods in PostgreSQL, including CONCAT(), CONCAT_WS(), FORMAT(), and the double pipe (||) operator. You will learn how to combine text values, add separators between strings, create formatted output, and build dynamic messages directly within SQL queries. The lesson explains the differences between these methods, how they handle NULL values, and when to use each approach for cleaner and more efficient SQL code. Through practical examples, you will gain a solid understanding of string manipulation techniques that are frequently used in reporting, data formatting, and application development with PostgreSQL.