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  1. Derby
  2. DERBY-2057

SYSCS_UTIL.SYSCS_INPLACE_COMPRESS_TABLE documentation or implementation error on its arguments.

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 10.2.1.6, 10.3.1.4
    • 10.3.1.4
    • SQL
    • None
    • Any

    Description

      There seems to be an error on the SYSCS_UTIL.SYSCS_INPLACE_COMPRESS_TABLE documentation or the implementation itself when passing the following arguments:

      PURGE_ROWS
      If PURGE_ROWS is set to a non-zero value, then a single pass is made through the table which will purge committed deleted rows from the table.
      <snip>

      DEFRAGMENT_ROWS
      If DEFRAGMENT_ROWS is set to a non-zero value, then a single defragment pass is made which will move existing rows from the end of the table towards the front of the table.
      <snip>

      TRUNCATE_END
      If TRUNCATE_END is set to a non-zero value, then all contiguous pages at the end of the table will be returned to the operating system.
      <snip>

      The implementation only checks if the above arguments are 1s.

      org.apache.derby.iapi.db.OnlineCompress.compressTable(
      schema,
      tablename,
      (purgeRows == 1),
      (defragementRows == 1),
      (truncateEnd == 1));
      ...

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            yipng Yip Ng
            yipng Yip Ng
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              Updated:
              Resolved:

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