mysql select if null then 0 code example

Example 1: 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

Example 2: if column value is null then in mysql

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

Example 3: check if value is null mysql

SELECT * from TABLE where CODE IS NULL OR CODE!='C'

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Sql Example

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