What is DELIMITER?
The DELIMITER operation changes the delimiter from the standard semicolon “
;” to another type of delimiter.
When you define a functions, stored procedures, or triggers which wrap multiple statements inside, you must use a delimiter other than the default delimiter “
;”, such as “
\\’, or “
$$’. Each statement inside the function still ends with “
;”, while the function only ends with the custom defined delimiter.
By doing that, the SQL client knows where to terminate the function as a whole instead of terminating each body statement at a time.
Define a custom function and use DELIMITER to define “
\\”” as the the terminator of the function instead of the standard semi colon “
DELIMITER // CREATE FUNCTION FortyTwo() RETURNS TINYINT DETERMINISTIC BEGIN DECLARE x TINYINT; SET x = 42; RETURN x; END // DELIMITER ;
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