![]() ![]() We’ll take the customers table for the demonstration: Code language: SQL (Structured Query Language) ( sql ) 3) Using MySQL CONCAT with NULL values The following example uses the CONCAT function to concatenate the first name, space, and last name into the full name: SELECT CONCAT(firstName, ' ', lastName) full_nameĮmployees Code language: SQL (Structured Query Language) ( sql ) We’ll use the employees table from the sample database: If you only concatenate the quoted strings, you can concatenate them by placing the strings next to each other like this: SELECT 'John' ' ' 'Doe' full_name Code language: SQL (Structured Query Language) ( sql )ġ row in set ( 0.00 sec) Code language: SQL (Structured Query Language) ( sql ) 2) Using MySQL CONCAT with table data In this example, we use the CONCAT() function to combine three quoted strings ‘John’, ‘ ‘, and ‘Doe’ into the full name. The following example uses the CONCAT() function to concatenate the quoted string into a single string: SELECT CONCAT( 'John', ' ', 'Doe') full_name Code language: SQL (Structured Query Language) ( sql )ġ row in set ( 0.01 sec) Code language: SQL (Structured Query Language) ( sql ) ![]() Let’s take some examples of using the CONCAT() function. In addition, if you pass numbers to the CONCAT() function, it’ll convert these numbers to their equivalent strings before concatenation. If any string is NULL, the CONCAT() function returns NULL. It returns a single string that combines the string arguments string1, string2, and string3 … The CONCAT() function accepts a variable number of input strings: string1, string2, string3, … ) Code language: SQL (Structured Query Language) ( sql ) Here’s the basic syntax of the CONCAT() function: CONCAT(string1, string2, string3. The CONCAT() function allows you to concatenate multiple strings into a single string. Introduction to the MySQL CONCAT function A numeric argument is converted to its equivalent nonbinary string form.Summary: in this tutorial, you will learn how to use the MySQL CONCAT() function to concatenate multiple strings into a single string. If the arguments include any binary strings, the result is a binary string. If all arguments are nonbinary strings, the result is a nonbinary string. The CONCAT() function returns NULL if any argument is NULL.Įxample: SELECT CONCAT('Homer', NULL, 'Simpson') AS 'Full Name' You only need to specify the separator once, and it’s used on every string that’s concatenated, therefore saving you from having to re-type it between each string. This allows you to specify a separator to be used in between each string. If you’re concatenating more than two strings, and you need a space (or other separator), consider using the CONCAT_WS() function. So if we apply this to a database, then the query might look something like this: SELECT CONCAT(FirstName, ' ', LastName) AS 'Full Name' ![]() Which may or may not be the result you’re looking for. If I didn’t add the space it would’ve looked like this: SELECT CONCAT('Homer', 'Simpson') AS 'Full Name' I concatenated the first name, the last name, plus a space. ![]() Note that I actually concatenated 3 strings here. Here’s an example: SELECT CONCAT('Homer', ' ', 'Simpson') AS 'Full Name' In MySQL (and in any computer programming environment), string concatenation is the operation of joining character strings end-to-end. MySQL has the CONCAT() function, which allows you to concatenate two or more strings. The function actually allows for one or more arguments, but its main use is to concatenate two or more strings. ![]()
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