protected function getColumnDefinition()
{
return [['column1', 'CHARACTER VARYING(10)'], ['column2', 'INT'], ['column3', 'NUMERIC(10,2)'], ['column4', 'CHARACTER(100)'], ['column5', 'DATE'], ['column6', 'TIMESTAMP'], ['column7', 'TEXT'], ['column8', 'FLOAT'], ['column9', 'CHARACTER VARYING(10)'], ['column10', 'INT'], ['column11', 'BIGINT'], ['column12', "ENUM('A', 'B', 'C')"], ['column13', 'TIMESTAMP'], ['column21', 'BIGSERIAL'], ['column22', 'BIGINT'], ['column23', 'SERIAL']];
}