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SQL Language (MOSC)

Hidden Column and XXX_tab_columns/XXX_tab_cols

Jun 18, 2018 10:54AM edited Jun 19, 2018 4:21AM in SQL Language (MOSC) 4 commentsAnswered ✓

Hi All,

According to Oracle documentation, the xxx_tab_columns (for example all_tab_columns) will filter hidden columns.

"This view filters out system-generated hidden columns and invisible columns, which are user-generated hidden columns. The ALL_TAB_COLS view does not filter out hidden columns and invisible columns."

https://docs.oracle.com/database/121/REFRN/GUID-F218205C-7D76-4A83-8691-BFD2AD372B63.htm#REFRN20277

However, when I tested on my 12.1 (non-CDB) and 12.2 CDB, both view shows the hidden column. What am I missing?

-- Test Script

SQL> create table testme (eid number, ename varchar2(32) invisible);

Table created.

SQL>column table_name format A10

0

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