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1. Fix index access costs for MERGE tables, set block_size=myisam_block_size/#underlying_tables instead of 0 which it was before. 2. Make index scans on MERGE table to return records in (key_tuple, merge_table_rowid) order, instead of just (key_tuple) order. This makes an index scan on MERGE table to be truly a ROR-scan which is a requirement for index_merge union/intersection. myisammrg/myrg_queue.c: BUG#17314: Make index scans on MERGE table return records ordered by (keytuple, merge_table_rowid). mysql-test/r/index_merge.result: Testcase for BUG#17314 mysql-test/r/merge.result: BUG#17314: update testcase result mysql-test/t/index_merge.test: Testcase for BUG#17314 sql/ha_myisammrg.cc: BUG#17314: For MERGE tables, set handler::block_size to myisam_block_size/#underlying_tables, and not to 0. |
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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_rnext_same.c | ||
| myrg_rprev.c | ||
| myrg_rrnd.c | ||
| myrg_rsame.c | ||
| myrg_static.c | ||
| myrg_update.c | ||
| myrg_write.c | ||