Change A filed to not null
ALTER TABLE
clients
ALTER COLUMN
phone
NVARCHAR(20) NOT NULL;Change A filed to not null
ALTER TABLE
clients
ALTER COLUMN
phone
NVARCHAR(20) NOT NULL;SQL Alter column to be not null
ALTER TABLE table_name
ALTER COLUMN col_name data_type NOT NULL;change sql column from null to not null
ALTER TABLE [TABLE_NAME] CHANGE [COLUMN_NAME] [COLUMN_NAME] [COLUMN_TYPE] NOT NULL DEFAULT [DEFAULT];alter column to not null with default value sql server
ALTER TABLE SomeTable
ADD SomeCol Bit NULL --Or NOT NULL.
CONSTRAINT D_SomeTable_SomeCol --When Omitted a Default-Constraint Name is autogenerated.
DEFAULT (0)--Optional Default-Constraint.
WITH VALUES --Add if Column is Nullable and you want the Default Value for Existing Records.Copyright © 2021 Codeinu
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