Question : how to check if a column is null in sql
Answered by : tanjim-ashraf
SELECT column_name FROM table_name
WHERE column_name IS NULL;Source : | Last Update : Wed, 23 Sep 20
Question : isnull sql server
Answered by : excited-echidna-vlbvjb9xt26t
SELECT ISNULL(ValueToBeTested, ReturnValueIfNull);Source : | Last Update : Wed, 10 Feb 21
Question : sql is null
Answered by : lorenzo-satta-chiris
Tests for empty (NULL) values.
Example: Returns users that haven’t given a contact number.
SELECT * FROM users
WHERE contact_number IS NULL;Source : | Last Update : Thu, 14 Jan 21