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strings MySQL is setting the flag HA_END_SPACE_KEYS for all the keys that reference text or varchar columns with collation different than binary. This was done to handle correctly the situation where a lookup on such a key may return more than 1 row because of the presence of many rows that differ only by the amount of trailing space in the table's string column. Inserting such values however appears to violate the unique checks on INSERT/UPDATE. Thus that flag must not be set as it will prevent the optimizer from choosing a faster access method. This fix removes the setting of the HA_END_SPACE_KEYS flag. include/my_base.h: Bug #22367: Optimizer uses ref join type instead of eq_ref for simple join on strings - disabled HA_END_SPACE_KEY as it's no longer needed mysql-test/r/func_str.result: Bug #22367: Optimizer uses ref join type instead of eq_ref for simple join on strings - fixed explain in an existing case mysql-test/r/merge.result: Bug #22367: Optimizer uses ref join type instead of eq_ref for simple join on strings - fixed explain in an existing case mysql-test/r/select.result: Bug #22367: Optimizer uses ref join type instead of eq_ref for simple join on strings - test case mysql-test/r/subselect.result: Bug #22367: Optimizer uses ref join type instead of eq_ref for simple join on strings - fixed explain in an existing case mysql-test/t/select.test: Bug #22367: Optimizer uses ref join type instead of eq_ref for simple join on strings - test case |
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| .. | ||
| .cvsignore | ||
| base64.h | ||
| config-netware.h | ||
| config-os2.h | ||
| config-win.h | ||
| decimal.h | ||
| errmsg.h | ||
| ft_global.h | ||
| hash.h | ||
| heap.h | ||
| help_end.h | ||
| help_start.h | ||
| keycache.h | ||
| m_ctype.h | ||
| m_string.h | ||
| Makefile.am | ||
| md5.h | ||
| my_aes.h | ||
| my_alarm.h | ||
| my_alloc.h | ||
| my_base.h | ||
| my_bitmap.h | ||
| my_dbug.h | ||
| my_dir.h | ||
| my_getopt.h | ||
| my_global.h | ||
| my_handler.h | ||
| my_libwrap.h | ||
| my_list.h | ||
| my_net.h | ||
| my_no_pthread.h | ||
| my_nosys.h | ||
| my_pthread.h | ||
| my_semaphore.h | ||
| my_sys.h | ||
| my_time.h | ||
| my_tree.h | ||
| my_user.h | ||
| my_xml.h | ||
| myisam.h | ||
| myisammrg.h | ||
| myisampack.h | ||
| mysql.h | ||
| mysql_com.h | ||
| mysql_embed.h | ||
| mysql_time.h | ||
| mysql_version.h.in | ||
| mysys_err.h | ||
| queues.h | ||
| raid.h | ||
| rijndael.h | ||
| sha1.h | ||
| sql_common.h | ||
| sslopt-case.h | ||
| sslopt-longopts.h | ||
| sslopt-vars.h | ||
| t_ctype.h | ||
| thr_alarm.h | ||
| thr_lock.h | ||
| typelib.h | ||
| violite.h | ||