RE: Question about Append hint in Insert
- From: "Lex de Haan" <lex.de.haan@xxxxxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Mon, 21 Jun 2004 10:21:28 +0200
one small correction: non-unique indexes do *not* allocate more space...
both unique and non-unique indexes contain ROWID values, obviously.
the difference is that the ROWID values are part of the key value for
non-unique indexes,
and they are part of the entry header for unique indexes.
Cheers,
Lex.
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visit my website at http://www.naturaljoin.nl
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-----Original Message-----
Are there some other problems, overheads etc. additional to the fact, that
the non-unique index allocates more space (additional ROWID in each index
entry) as the unique index with the same indexed columns?
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