Igor, While merging 5.3-mwl89 with 5.3 I noticed that when you extracted a block of code from add_key_part() into the new function add_keyuse(), you skipped the initialization: keyuse.ref_table_rows= 0; was it intentional, and if so, why? Timour

At file:///home/igor/maria/maria-5.3-mwl128-hjkey/

------------------------------------------------------------ revno: 2875 revision-id: igor@askmonty.org-20110105055941-xht2mpqe66a64fbm parent: igor@askmonty.org-20101230021403-ly4ku1yq675l5d6b committer: Igor Babaev<igor@askmonty.org> branch nick: maria-5.3-mwl128-hjkey timestamp: Tue 2011-01-04 21:59:41 -0800 message: The patch adds the code that allows to use equi-join conditions for hash join in the cases when there are no suitable indexes for these conditions.

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