https://stackoverflow.com/questions/452464/how-can-i-get-column-names-from-a-table-in-oracle
記得 table_name 要大寫, ORACLE 很在意大小寫的 😃
SELECT table_name, column_name, data_type, data_length
FROM USER_TAB_COLUMNS
WHERE table_name = 'MYTABLE'
ORDER BY
column_id