# Updating an index

After an index has been created, a user can perform a bulk reindexing of the text column.

If SQL authorization is enabled, the database owner is the only account which can reindex a text column in another user's table. The following procedure reindexes the column across the whole table:

    LUCENESUPPORT.UPDATEINDEX
    (
        SCHEMANAME VARCHAR( 128 ),
        TABLENAME VARCHAR( 128 ),
        TEXTCOLUMN VARCHAR( 128 ),
        INDEXDESCRIPTORMAKER VARCHAR( 32672 )
    )

The first three arguments identify the column to be reindexed. The last argument lets you override how the text is indexed and how queries are parsed.

This release of the `luceneSupport` tool does not support the incremental reindexing of data. Updating the index is a bulk operation, which reindexes an entire data set. For this reason, this release of the `luceneSupport` tool is not appropriate for update-intensive applications where the results of full-text queries must be current. The `luceneSupport` tool is better suited to applications for which yesterday's full-text query results are good enough:

- Read-mostly: Applications which analyze static text data
- Fuzzy: Applications which can perform a bulk reindexing of the text data periodically (for example, once a day), and which can tolerate that amount of fuzziness in query results

## Example

    -- reindex a column using a custom analyzer
    CALL LUCENESUPPORT.UPDATEINDEX
    (
        'ruth', 'poemView', 'poemText',
        'myapp.MyIndexDescriptor.makeMe',
    );

Parent topic: Using the luceneSupport optional tool
Related reference
Creating an index
Querying an index
Dropping an index
Listing indexes