Answers for "set not null in sql"

Change A filed to not null

ALTER TABLE
  clients
ALTER COLUMN
  phone
    NVARCHAR(20) NOT NULL;

Posted by: Guest on March-19-2020

sql not null

SELECT column_name FROM table_name 
WHERE column_name IS NOT NULL;

Posted by: Guest on December-07-2020

sql is not null

SELECT * FROM my_table WHERE my_column IS NOT NULL;

Posted by: Guest on April-21-2021

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