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The problem was an ab-use of last_rkey_length. Formerly we saved the packed key length (of the search key) in this element. But in certain cases it got replaced by the (packed) result key length. Now we use a new element of MI_INFO to save the packed key length of the search key. myisam/mi_dbug.c: Bug#9112 - Merge table with composite index producing invalid results with some queries Fixed the recognition of NULL values in _mi_print_key(). myisam/mi_rkey.c: Bug#9112 - Merge table with composite index producing invalid results with some queries Saved the packed key length in a new element of MI_INFO. myisam/mi_search.c: Bug#9112 - Merge table with composite index producing invalid results with some queries Added a comment and trace prints. myisam/myisamdef.h: Bug#9112 - Merge table with composite index producing invalid results with some queries Added a new element to store the packed key length for use by the MyISAMMRG engine. myisammrg/myrg_rkey.c: Bug#9112 - Merge table with composite index producing invalid results with some queries Changed to use the new element of MI_INFO to get at the packed key length. mysql-test/r/merge.result: Bug#9112 - Merge table with composite index producing invalid results with some queries The test result. mysql-test/t/merge.test: Bug#9112 - Merge table with composite index producing invalid results with some queries The test case. |
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| .. | ||
| .cvsignore | ||
| make-ccc | ||
| Makefile.am | ||
| myrg_close.c | ||
| myrg_create.c | ||
| myrg_def.h | ||
| myrg_delete.c | ||
| myrg_extra.c | ||
| myrg_info.c | ||
| myrg_locking.c | ||
| myrg_open.c | ||
| myrg_panic.c | ||
| myrg_queue.c | ||
| myrg_range.c | ||
| myrg_rfirst.c | ||
| myrg_rkey.c | ||
| myrg_rlast.c | ||
| myrg_rnext.c | ||
| myrg_rprev.c | ||
| myrg_rrnd.c | ||
| myrg_rsame.c | ||
| myrg_static.c | ||
| myrg_update.c | ||
| myrg_write.c | ||