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How To Obtain Information of Column Visibility (Doc ID 1608686.1)

Last updated on JULY 05, 2021

Applies to:

JDBC - Version and later
Information in this document applies to any platform.


Invisible Columns:
One of the new features in Oracle Database 12c is to define invisible columns. The user controls whether a table column is visible or not.
The invisible columns are not seen if you gain any generic access of a table, such as:
- SELECT * FROM statements in SQL
- DESCRIBE commands in SQL*Plus
- %ROWTYPE attribute declarations in PL/SQL
- Describes in Oracle Call Interface (OCI)

You can display the invisible columns if you explicitly specify the invisible column in the column list of SELECT statement.
Similarly, you can insert a value into an invisible column only if you explicitly specify the invisible column in the column list for the INSERT statement. If you omit the column list in the INSERT statement, then the statement can only insert values into visible columns.

How to retrieve  information of whether a column is visible or not with JDBC?


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