Answers for "how to change a column from 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 Alter column to be not null

ALTER TABLE table_name
ALTER COLUMN col_name data_type NOT NULL;

Posted by: Guest on September-07-2021

sql server alter table column nullable

ALTER TABLE Customer
	ALTER COLUMN CustDesc NVARCHAR(MAX) NULL;

Posted by: Guest on January-18-2021

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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