ALTER TABLE customers
ADD COLUMN contact_name VARCHAR NOT NULL;
ALTER TABLE table_name
ADD COLUMN new_column_name data_type constraint;ALTER TABLE table_name
ADD column_name data_type column_constraint;ALTER TABLE table_name
ADD COLUMN column_name1 data_type constraint,
ADD COLUMN column_name2 data_type constraint,
...
ADD COLUMN column_namen data_type constraint;
Code language: SQL (Structured Query Language) (sql)ALTER TABLE table_name
ADD COLUMN new_column_name data_type constraint;
Code language: SQL (Structured Query Language) (sql)| Code Example |
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