Shulou(Shulou.com)05/31 Report--

The main content of this article is to explain "what is the operation of the index index column in the update table to the original index entry", interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Next, let the editor take you to learn "what is the operation of the index index column in the update table to the original index entry?"

Delete the original index entry and then insert the new value entry.

Experimental verification:

Method: after modifying the index column value, view the changes of index fragments

-- establish table test CREATE TABLE MES1.T_OBJECTASSELECT * FROM DBA_OBJECTSWHERE ROWNUM

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