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    oracle 12c Tag

    27
    November

    Invisible Columns in Oracle Database 12c

    November 27, 2016
    In Oracle DB
    By admin

    In Oracle Database 12c, you can set a column in table as invisible either during CREATE TABLE or modifying existing table via ALTER TABLE command. By default, table columns are always visible.  When you make it invisible, the COL# column in COL$ dictionary is updated...

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