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
mysql where value is null
SELECT * FROM contacts WHERE last_name IS NULL;
mysql ifnull
##syntax: SELECT IFNULL(col_with_null_value, default_value); ##you can see the result select with the string NA where the document is null: SELECT IFNULL(user_document_id, 'NA');
if null mysql
SELECT IFNULL(NULL, "W3Schools.com");
check if value is null mysql
SELECT * from TABLE where CODE IS NULL OR CODE!='C'
Source: stackoverflow.com
mysql if null
IFNULL(MAX(EMAIL), "example@google.com") as email