Answers for "check null in sql"

sql not null

SELECT column_name FROM table_name 
WHERE column_name IS NOT NULL;

Posted by: Guest on December-07-2020

(NVL) replaces NULL values with same type default
value provided.
For Example = 
Select NVL(commission_percentage, 0)
From Employees;

Posted by: Guest on January-27-2021

get null in sql

SELECT * FROM EMPLOYEES 
WHERE MANAGER_ID IS NULL ;

Posted by: Guest on January-28-2021

get null value in sql

SELECT * FROM my_table WHERE col1 IS NULL;

Posted by: Guest on May-08-2021

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