add column table sql default value
ALTER TABLE users
ADD visit_number INT DEFAULT 0;add column table sql default value
ALTER TABLE users
ADD visit_number INT DEFAULT 0;adding a default constraint to an existing column in sql
--Altering an existing column to add a default constraint:
ALTER TABLE {TABLE NAME}
ADD CONSTRAINT {CONSTRAINT NAME}
DEFAULT {DEFAULT VALUE} FOR {EXISTING COLUMN NAME}
--Adding a new column, with default value, to an existing table:
ALTER TABLE {TABLE NAME}
ADD {COLUMN NAME} {DATA TYPE} {NULL | NOT NULL}
CONSTRAINT {CONSTRAINT NAME} DEFAULT {DEFAULT VALUE}
--Dropping a contraint:
ALTER TABLE {TABLE NAME}
DROP CONSTRAINT {CONSTRAINT NAME}How to Add a Default Value to a Column in MS SQL Server
ALTER TABLE <table_name> ADD DEFAULT <DEFAULT_VALUE> FOR <NAME_OF_COLUMN>Add a column with a default value to an existing table in SQL Server
ALTER TABLE {TABLENAME}
ADD {COLUMNNAME} {TYPE} {NULL|NOT NULL}
CONSTRAINT {CONSTRAINT_NAME} DEFAULT {DEFAULT_VALUE}
WITH VALUESsql server create table column default value constraint name
CREATE TABLE dbo.doc_exz (
column_a INT,
column_b INT CONSTRAINT DF_Doc_Exz_Column_B DEFAULT 50);Copyright © 2021 Codeinu
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