SQL>
SQL> set long 50000
SQL>
SQL> select text
2 from all_views
3 where view_name = 'ALL_TAB_COLUMNS'
4 /
TEXT
--------------------------------------------------------------------------------
select /*+ rule */ OWNER, TABLE_NAME,
COLUMN_NAME, DATA_TYPE, DATA_TYPE_MOD, DATA_TYPE_OWNER,
DATA_LENGTH, DATA_PRECISION, DATA_SCALE, NULLABLE, COLUMN_ID,
DEFAULT_LENGTH, DATA_DEFAULT, NUM_DISTINCT, LOW_VALUE, HIGH_VALUE,
DENSITY, NUM_NULLS, NUM_BUCKETS, LAST_ANALYZED, SAMPLE_SIZE,
CHARACTER_SET_NAME, CHAR_COL_DECL_LENGTH,
GLOBAL_STATS, USER_STATS, AVG_COL_LEN, CHAR_LENGTH, CHAR_USED,
V80_FMT_IMAGE, DATA_UPGRADED, HISTOGRAM
from ALL_TAB_COLS
where HIDDEN_COLUMN = 'NO'
SQL>