SQL -Standardbeschränkung mit Alter Tabelle
#SQL Server
ALTER TABLE College
ADD CONSTRAINT country_default
DEFAULT 'US' FOR college_country;
#PostgreSQL
ALTER TABLE College
ALTER COLUMN college_code SET DEFAULT 'US';
#MySQL
ALTER TABLE College
ALTER college_country SET DEFAULT 'US';
#Oracle
ALTER TABLE College
MODIFY college_country DEFAULT 'US';
SAMER SAEID