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  • Committer: Stewart Smith
  • Author(s): Vasil Dimov, Stewart Smith
  • Date: 2010-12-20 02:24:00 UTC
  • mto: (2021.1.2 build)
  • mto: This revision was merged to the branch mainline in revision 2022.
  • Revision ID: stewart@flamingspork.com-20101220022400-0p9lvvppwgaowdju
Merge Revision revid:vasil.dimov@oracle.com-20101102165720-164z3666y3tut4c2 from MySQL InnoDB

Original revid:vasil.dimov@oracle.com-20101102165720-164z3666y3tut4c2

Original Authors: Vasil Dimov <vasil.dimov@oracle.com>
Original commit message:
Fix Bug#53046 dict_update_statistics_low can still be run concurrently on same table

Replace the array of mutexes that used to protect
dict_index_t::stat_n_diff_key_vals[] with an array of rw locks that protects
all the stats related members in dict_table_t and all of its indexes.

Approved by:    Jimmy (rb://503)

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docs/rollback.rst
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ROLLBACK
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The ROLLBACK command rolls back the current transaction and causes all updates made by the transaction to be discarded. ::
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        ROLLBACK [WORK] TO [SAVEPOINT] identifier
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Calling ROLLBACK causes the updates that were started to be discarded if no identifier is specified; otherwise, it rolls back to the identifier.
 
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ROLLBACK [WORK] TO [SAVEPOINT] identifier
 
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Calling ROLLBACK causes the current transaction to undo the transaction that
 
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has begun if no identifier is specified, otherwise it rolls back to the
 
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identifier.
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