"create function in mysql" Code Answer's
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create function in postgresql
create [or replace] function function_name(param_list)
returns return_type
language plpgsql
as $$
declare
-- variable declaration
begin
-- logic
end;
$$
Source: www.postgresqltutorial.com
mysql create function
-- MySQL
-- example
DELIMITER $$
CREATE FUNCTION f_employee_count(p_dept_no INTEGER) RETURNS INTEGER
DETERMINISTIC NO SQL READS SQL DATA
BEGIN
DECLARE v_emp_count INTEGER;
SELECT COUNT(*)
INTO v_emp_count
FROM EMPLOYEES E
WHERE E.DEPT_NO = p_dept_no
GROUP BY DEPARTMENT_NO;
RETURN v_emp_count;
END$$
DELIMITER ;
/* syntax:
DELIMITER $$
CREATE FUNCTION <Your-procedure-name>(<arguments>) RETURNS <date-type>
DETERMINISTIC NO SQL READS SQL DATA
BEGIN
DECLARE <variable-name> <data-type>
<Code-that-sets-the-output-variable>;
RETURN <variable-name>;
END$$
DELIMITER ;
*/
create function in mysql
// created function checkTags
CREATE FUNCTION `data-management`.checkTags(tags text)
RETURNS text
DETERMINISTIC
BEGIN
return tags ;
END
// queries according to it
SELECT * FROM `data-management`.properties p WHERE `data-management`.checkTags(p.tags = 'tag1,absntee')
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