Answers for "alter null to 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

change sql column from null to not null

ALTER TABLE [TABLE_NAME] CHANGE [COLUMN_NAME] [COLUMN_NAME] [COLUMN_TYPE] NOT NULL DEFAULT [DEFAULT];

Posted by: Guest on February-15-2021

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