diff: global index and a local index
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Thread: diff: global index and a local index

  1. #1
    Join Date
    Nov 2001
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    diff: global index and a local index

    What is the difference between a global index and a local index.

  2. #2
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    well one is global to the table, one is local to a partition

    what else you want to know?

  3. #3
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    So if you have a partitioned table and you have a global index, does that mean that it is one self contained object with values for all the partition? How does the local index differ?
    Thanks.

  4. #4
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    davey23uk comment self explainatory. Isn't it ? Create one local and other global index and observe the underlying structures you should be able to figure out.

    Local index is @ partition level and indexed based on the partition data only where as global index, indexed on the whole table(all partitions).
    Reddy,Sam

  5. #5
    Join Date
    Jul 2001
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    59

    confusion about local index and global index

    Hi to all,

    I am in confusion about local index and global index.

    Give some example where the global index is been used and where the local index is been used?

    Mistry Pradip

  6. #6
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    create index zzz on table1(x);

    create index yyy on table1(x)
    LOCAL;

    one is local to the partition, one is global.

    e.g you can rebuild a partitioned index partition by partition - helps when doing a full index scan as you only have to scan the index partition

  7. #7
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    Jeff Hunter
    marist89@yahoo.com
    http://marist89.blogspot.com/
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