nvl in sql
(NVL) replaces NULL values with same type default
value provided.
For Example =
Select NVL(commission_percentage, 0)
From Employees;nvl in sql
(NVL) replaces NULL values with same type default
value provided.
For Example =
Select NVL(commission_percentage, 0)
From Employees;sql is not null
The reverse of NULL. Tests for values that aren’t empty / NULL
"Tests for empty (NULL) values.
Example: Returns users that haven’t given a contact number.
SELECT * FROM users
WHERE contact_number IS NULL;"Copyright © 2021 Codeinu
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