RE: Question about Append hint in Insert

From: Lex de Haan <lex.de.haan_at_naturaljoin.nl>
Date: Mon, 21 Jun 2004 10:21:28 +0200
Message-ID: <JFEEIGBIDOCCDALDIPLNCELDCEAA.lex.de.haan@naturaljoin.nl>

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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-----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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Received on Mon Jun 21 2004 - 03:18:14 CDT