![]() ![]() CONCAT_WS(separator,string1,string2.) Code language: SQL (Structured Query Language) ( sql )įor example, you can use the CONCAT_WS function to construct the full name of the employee as follows: SELECT CONCAT_WS( ' ',first_name,last_name) AS name FROM If you are using MySQL or PostgreSQL, you can use the CONCAT_WS function to concatenate strings with a separator. (first_name + ' ' + last_name) AS name FROM In Microsoft SQL Server, you would use the following query: SELECT (first_name || ' ' || last_name) AS name FROM It will be much cleaner if you use the concatenation operator in Oracle (and also PostgreSQL). The inner CONCAT function concatenates the first name with space, and the outer CONCAT function concatenates the result of the inner CONCAT function with the last name. ![]() See the following query: SELECT CONCAT( CONCAT(first_name, ' '), last_name) AS name FROM If you are using Oracle database, you have to apply the CONCAT function twice the achieve the same result. ORDER BY name Code language: SQL (Structured Query Language) ( sql ) SELECT CONCAT(first_name, ' ', last_name) AS name FROM The following statement uses the CONCAT function to return the full name of the employees by concatenating the first name, space, and last name. (1 row) Code language: SQL (Structured Query Language) ( sql ) The following statement uses the CONCAT function to concatenate two strings: SELECT CONCAT( 'SQL CONCAT function', ' demo') Code language: SQL (Structured Query Language) ( sql ) concat And in Microsoft SQL Server, you use the + operator. For example, MySQL CONCAT function allows you to concatenate more than two strings whereas Oracle CONCAT function concatenates exactly two strings.īesides using the CONCAT function, you can use the concatenation operator e.g., in Oracle and PostgreSQL you can use the || operator to concatenate two or more strings. Most relational database systems support the CONCAT function with some differences among them. (To handle NULL values more effectively you can use the IS NULL operator or COALESCE and NULLIF functions.) It returns NULL if one of the argument is NULL. The CONCAT function returns a string which is the combination of the input strings. To concatenate strings, you pass the strings as a list comma-separated arguments to the function. ![]() The following illustrates the syntax of the CONCAT function: CONCAT(string1,string2.) Code language: SQL (Structured Query Language) ( sql ) The SQL CONCAT function concatenates two or more strings into one string. Summary: in this tutorial, you will learn how to use the SQL CONCAT function to concatenate two or more strings into a single string. ![]()
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