PostgreSQL – CONCAT Function

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The CONCAT() function is used to concatenate two or more strings together. It takes multiple string arguments and returns a single string by concatenating those arguments in the order they are provided. If any of the arguments are NULL, the resulting concatenated string will also be NULL.

The syntax of the CONCAT() function is as follows:

CONCAT(string1, string2, ...)

where string1, string2, etc are the strings you want to concatenate.

Here’s a simple example of how to use the CONCAT() function in PostgreSQL:

SELECT CONCAT('Hello', ' ', 'World') AS concatenated_text;

In this example, the CONCAT() function concatenates the strings “Hello”, a space, and “World” to create the result “Hello World”.

You can also achieve the same concatenation using the || operator in PostgreSQL:

SELECT 'Hello' || ' ' || 'World' AS concatenated_text;

Both the CONCAT() function and the || operator are commonly used to combine strings in SQL queries.

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