![]() The following section provides you with the syntax of the ALTER TABLE ADD COLUMN statement in some common database systems. To add three columns: home address, date of birth, and linkedin account to the candidates table, you use the following statement: ALTER TABLE candidatesĪDD COLUMN linkedin_account VARCHAR( 255) Ĭode language: SQL (Structured Query Language) ( sql ) SQL ADD COLUMN statement in some common database systems In order to add the phone column to the candidates table, you use the following statement: ALTER TABLE candidates The following statement creates a new table named candidates: CREATE TABLE candidates ( ![]() Please check it out the next section for references. If you want to add multiple columns to an existing table using a single statement, you use the following syntax: ALTER TABLE table_nameĭifferent database systems support the ALTER TABLE ADD COLUMN statement with some minor variances. The typical syntax of the column_definition is as follows: column_name data_type constraint
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