Answers for "add column in sql with default value 0"

add column table sql default value

ALTER TABLE users
ADD visit_number INT DEFAULT 0;

alter table add column with default value

ALTER TABLE Protocols
ADD ProtocolTypeID int NOT NULL DEFAULT(1)

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 VALUES

add column alter table default value

ALTER TABLE PERSON
ADD IS_ACTIVE VARCHAR2(1) DEFAULT 'N' NOT NULL