select col.table_name,
--col.column_id as colorder,
tt.comments,
col.column_name as columnname,
case
when pkcol.column_position > 0 then
'√'else
''end as ispk,
col.data_type as typename,
--decode(col.data_type, 'number', col.data_precision, col.data_length) as length,
col.data_length 占用位元組數,
col.data_precision as preci,
col.data_scale as scale,
case
when col.nullable = 'y' then
'√'else
''end as cisnull,
-- '' as isidentity,
col.data_default as defaultval,
ccom.comments as detext /*,
col.num_distinct as num_distinct*/
from user_tab_columns col,
user_col_comments ccom,
(select aa.table_name,
aa.index_name,
aa.column_name,
aa.column_position
from user_ind_columns aa, user_constraints bb
where bb.constraint_type = 'p'
and aa.table_name = bb.table_name
and aa.index_name = bb.constraint_name
/*and aa.table_name in ('aa')*/
) pkcol,
user_tab_comments tt
where col.table_name = ccom.table_name
and col.column_name = ccom.column_name
and col.table_name = tt.table_name(+)
-- and col.table_name = 'aa'
and col.column_name = pkcol.column_name(+)
and col.table_name = pkcol.table_name(+)
order by col.table_name,col.column_id
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