Answers for "if column is null then 0 in mysql"

mysql return 0 if null

SELECT IFNULL(field, 0) AS field FROM products WHERE id = 1

SELECT IFNULL(SUM(field), 0) as field FROM products

Posted by: Guest on December-12-2020

set column to not null mysql

ALTER TABLE Person MODIFY P_Id INT(11) NOT NULL;

Posted by: Guest on April-16-2020

if column value is null then in mysql

SELECT 
    contactname, IFNULL(bizphone, homephone) phone
FROM
    contacts;

Posted by: Guest on November-05-2020

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