Answers for "create table column with default value"

add column table sql default value

ALTER TABLE users
ADD visit_number INT DEFAULT 0;

set default column value sql

Name Varchar(255) default "Fred"

sql 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);