mirror of
https://github.com/MariaDB/server.git
synced 2025-10-31 15:50:51 +03:00
0365e2d3dc
Fixed problem with negative DECIMAL() keys Fixed some bugs with NULL keys in BDB More mysql-test tests Docs/manual.texi: Changelog client/mysqltest.c: Added syntax: -- error #,#,... heap/hp_info.c: cleanup include/thr_lock.h: cleanup isam/pack_isam.c: cleanup myisam/mi_check.c: cleanup myisam/mi_extra.c: cleanup myisammrg/myrg_rkey.c: cleanup mysql-test/mysql-test-run.sh: Change to run test as root mysql-test/r/bdb.result: Many new tests mysql-test/r/func_system.result: Change to root user mysql-test/t/bdb.test: many more tests mysql-test/t/create.test: Change to work by test and root user sql/field.cc: Fixed problem with negative DECIMAL() keys sql/filesort.cc: cleanup sql/ha_berkeley.cc: Added purecoverage notes Fixed some bugs with NULL keys sql/init.cc: cleanup sql/mysql_priv.h: cleanup sql/mysqld.cc: cleanup sql/records.cc: cleanup sql/unireg.h: cleanup
93 lines
2.7 KiB
C
93 lines
2.7 KiB
C
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
|
|
|
|
/* Read record based on a key */
|
|
|
|
/*
|
|
* HA_READ_KEY_EXACT => SEARCH_BIGGER
|
|
* HA_READ_KEY_OR_NEXT => SEARCH_BIGGER
|
|
* HA_READ_AFTER_KEY => SEARCH_BIGGER
|
|
* HA_READ_PREFIX => SEARCH_BIGGER
|
|
* HA_READ_KEY_OR_PREV => SEARCH_SMALLER
|
|
* HA_READ_BEFORE_KEY => SEARCH_SMALLER
|
|
* HA_READ_PREFIX_LAST => SEARCH_SMALLER
|
|
*/
|
|
|
|
|
|
#include "mymrgdef.h"
|
|
|
|
/* todo: we could store some additional info to speedup lookups:
|
|
column (key, keyseg) can be constant per table
|
|
it can also be increasing (table1.val > table2.val > ...),
|
|
or decreasing, <=, >=, etc.
|
|
SerG
|
|
*/
|
|
|
|
int myrg_rkey(MYRG_INFO *info,byte *record,int inx, const byte *key,
|
|
uint key_len, enum ha_rkey_function search_flag)
|
|
{
|
|
byte *key_buff;
|
|
uint pack_key_length;
|
|
MYRG_TABLE *table;
|
|
MI_INFO *mi;
|
|
int err;
|
|
byte *buf=((search_flag == HA_READ_KEY_EXACT) ? record: 0);
|
|
LINT_INIT(key_buff);
|
|
LINT_INIT(pack_key_length);
|
|
|
|
if (_myrg_init_queue(info,inx,search_flag))
|
|
return my_errno;
|
|
|
|
for (table=info->open_tables ; table != info->end_table ; table++)
|
|
{
|
|
mi=table->table;
|
|
|
|
if (table == info->open_tables)
|
|
{
|
|
err=mi_rkey(mi,buf,inx,key,key_len,search_flag);
|
|
key_buff=(byte*) mi->lastkey+mi->s->base.max_key_length;
|
|
pack_key_length=mi->last_rkey_length;
|
|
}
|
|
else
|
|
{
|
|
err=_mi_rkey(mi,buf,inx,key_buff,pack_key_length,search_flag,FALSE);
|
|
}
|
|
info->last_used_table=table+1;
|
|
|
|
if (err)
|
|
{
|
|
if (err == HA_ERR_KEY_NOT_FOUND)
|
|
continue;
|
|
return err;
|
|
}
|
|
/* adding to queue */
|
|
queue_insert(&(info->by_key),(byte *)table);
|
|
|
|
/* if looking for KEY_EXACT, return first matched now */
|
|
if (buf)
|
|
{
|
|
info->current_table=table;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (!info->by_key.elements)
|
|
return HA_ERR_KEY_NOT_FOUND;
|
|
|
|
mi=(info->current_table=(MYRG_TABLE *)queue_top(&(info->by_key)))->table;
|
|
return mi_rrnd(mi,record,mi->lastpos);
|
|
}
|