mysql if null

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Clara
10 May 2016
1SELECT IFNULL(field, 0) AS field FROM products WHERE id = 1
2
3SELECT IFNULL(SUM(field), 0) as field FROM products
source
Lamia
21 Jan 2017
1SELECT * 
2FROM table 
3WHERE YourColumn IS NOT NULL;
source
Sara
05 Jan 2019
1SELECT *
2FROM contacts
3WHERE last_name IS NULL;
Fabian
11 Apr 2018
1##syntax:
2SELECT IFNULL(col_with_null_value, default_value);
3
4##you can see the result select with the string NA where the document is null:
5SELECT IFNULL(user_document_id, 'NA');
Vanessa
19 Jul 2018
1IFNULL(MAX(EMAIL), "example@google.com") as email
Tim
17 Sep 2020
1 SELECT 
2    contactname, IFNULL(bizphone, homephone) phone
3FROM
4    contacts;
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