테이블정의서(칼럼뽑기)
SELECT A.TABLE_NAME , B.COMMENTS BC , A.COLUMN_NAME , C.COMMENTS CC , A.DATA_TYPE , A.DATA_LENGTH , A.DATA_PRECISION , A.DATA_SCALE , A.NULLABLE , A.COLUMN_ID , A.DATA_DEFAULT FROM USER_TAB_COLUMNS A , USER_TAB_COMMENTS B , USER_COL_COMMENTS C WHERE A.TABLE_NAME = B.TABLE_NAME AND A.TABLE_NAME = C.TABLE_NAME AND A.COLUMN_NAME = C.COLUMN_NAME