maybe_add_column ( $table_name, $column_name, $create_ddl )
- (string) $table_name Database table name
- (string) $column_name Table column name
- (string) $create_ddl SQL to add column to table.
- (bool) False on failure. True, if already exists or was successful.
- Introduced in WordPress: 1.0.0
- Deprecated in WordPress: —
Add column to database table, if column doesn't already exist in table.