<pre name="code" class="sql">批量生成分区:
oadb01:/home/oracle/mysql> cat a1.sh
export NLS_LANG="SIMPLIFIED CHINESE_CHINA.ZHS16GBK"
date=`echo $1 | tr -d '-'`
date1=`echo $2 | tr -d '-'`
date2=`echo $1`
date_end=`get_date $2 +1 | tr -d '-'`
while :
do
date3=`get_date $date +1`
var=`date -d "$date3" +%s`
echo "alter table history_log add partition (partition p$date values less than ($var));"
date2=`get_date $date +1`
date=`echo $date2 | tr -d '-'`
#echo $date3
if [ "$date" = "$date_end" ]
then
exit
fi
done
oadb01:/home/oracle/sbin> cat get_date
export NLS_LANG="american_america.ZHS16GBK"
echo " set colsep |;
set echo off;
set feedback off;
set heading off;
set pagesize 0;
set termout off;
set trimout on;
set trimspool on;
set linesize 3000;
spool ./date.txt1;
select to_char((to_date('$1','YYYYMMDD')$2),'YYYYMMDD') from dual where rownum=1;
" | sqlplus query/query >/dev/null
if [ -f ./date.txt1 ]
then
cat ./date.txt1 | grep -v "^SQL>" | tr -d ' ' >./date.txt
rm -f ./date.txt1
else
exit
fi
date=`cat ./date.txt`
rm -f ./date.txt
echo $date
-------------------------------------------------------------------------------------------------------
CREATE TABLE `history_log` (
`id` bigint(20) unsigned NOT NULL,
`itemid` bigint(20) unsigned NOT NULL,
`clock` int(11) NOT NULL DEFAULT '0',
`timestamp` int(11) NOT NULL DEFAULT '0',
`source` varchar(64) NOT NULL DEFAULT '',
`severity` int(11) NOT NULL DEFAULT '0',
`value` text NOT NULL,
`logeventid` int(11) NOT NULL DEFAULT '0',
`ns` int(11) NOT NULL DEFAULT '0',
PRIMARY KEY (`id`,`clock`),
UNIQUE KEY `history_log_2` (`itemid`,`id`,`clock`),
KEY `history_log_1` (`itemid`,`clock`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
partition by RANGE (clock) (PARTITION p20150806 values less than (1438876800));
back_office:/root# date -d @1438876800 "+%Y%m%d"
20150807
range 分区 小于前一天
mysql> show create table trends\G;
*************************** 1. row ***************************
Table: trends
CREATE TABLE `trends` (
`itemid` bigint(20) unsigned NOT NULL,
`clock` int(11) NOT NULL DEFAULT '0',
`num` int(11) NOT NULL DEFAULT '0',
`value_min` double(16,4) NOT NULL DEFAULT '0.0000',
`value_avg` double(16,4) NOT NULL DEFAULT '0.0000',
`value_max` double(16,4) NOT NULL DEFAULT '0.0000',
PRIMARY KEY (`itemid`,`clock`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
partition by RANGE (clock) (PARTITION p20150806 values less than (1438876800));
1 row in set (0.00 sec)
oadb01:/home/oracle/mysql> cat 1
alter table trends add partition (partition p20150807 values less than (1438963200));
alter table trends add partition (partition p20150808 values less than (1439049600));
alter table trends add partition (partition p20150809 values less than (1439136000));
alter table trends add partition (partition p20150810 values less than (1439222400));
alter table trends add partition (partition p20150811 values less than (1439308800));
alter table trends add partition (partition p20150812 values less than (1439395200));
alter table trends add partition (partition p20150813 values less than (1439481600));
alter table trends add partition (partition p20150814 values less than (1439568000));
访问分区:
mysql> select * from trends partition(p20150806);
+--------+------------+-----+-----------+-----------+-----------+
| itemid | clock | num | value_min | value_avg | value_max |
+--------+------------+-----+-----------+-----------+-----------+
| 23678 | 1438851600 | 4 | 0.0000 | 0.0000 | 0.0000 |
| 23679 | 1438851600 | 4 | 0.0000 | 0.0000 | 0.0000 |
| 23680 | 1438851600 | 4 | 0.0000 | 0.0000 | 0.0000 |
| 23682 | 1438851600 | 4 | 99.8833 | 99.9000 | 99.9167 |
| 23683 | 1438851600 | 4 | 0.0000 | 0.0000 | 0.0000 |
| 23684 | 1438851600 | 4 | 0.0000 | 0.0000 | 0.0000 |
| 23685 | 1438851600 | 4 | 0.0000 | 0.0000 | 0.0000 |
| 23686 | 1438851600 | 4 | 0.0000 | 0.0083 | 0.0167 |
| 23687 | 1438851600 | 4 | 0.0000 | 0.0000 | 0.0000 |
| 23688 | 1438851600 | 4 | 0.0500 | 0.0709 | 0.0834 |
| 23689 | 1438851600 | 4 | 0.0167 | 0.0292 | 0.0333 |
| 23693 | 1438851600 | 4 | 100.0000 | 100.0000 | 100.0000 |
| 23703 | 1438851600 | 3 | 84.7493 | 84.7493 | 84.7493 |
| 23704 | 1438851600 | 3 | 99.9258 | 99.9258 | 99.9258 |
| 23707 | 1438851600 | 3 | 63.9416 | 63.9417 | 63.9418 |
| 23708 | 1438851600 | 3 | 84.2241 | 84.2241 | 84.2241 |
| 23731 | 1438851600 | 4 | 0.3750 | 0.4088 | 0.4400 |
| 23732 | 1438851600 | 4 | 0.0700 | 0.1788 | 0.3200 |
| 23733 | 1438851600 | 4 | 0.4900 | 0.6525 | 0.8200 |
| 23735 | 1438851600 | 4 | 89.1683 | 93.7320 | 95.8974 |
| 23736 | 1438851600 | 4 | 0.0000 | 0.0106 | 0.0172 |
| 23737 | 1438851600 | 4 | 0.5099 | 2.3167 | 5.0391 |
| 23738 | 1438851600 | 4 | 0.0000 | 0.0000 | 0.0000 |
| 23739 | 1438851600 | 4 | 0.0585 | 0.1184 | 0.2146 |
| 23740 | 1438851600 | 4 | 0.0000 | 0.0000 | 0.0000 |
| 23741 | 1438851600 | 4 | 0.5680 | 1.2724 | 3.1757 |
| 23742 | 1438851600 | 4 | 1.8628 | 2.5440 | 2.9594 |
| 23746 | 1438851600 | 4 | 79.8505 | 80.0372 | 80.1767 |
| 23756 | 1438851600 | 4 | 85.4452 | 85.4453 | 85.4453 |
| 23757 | 1438851600 | 4 | 99.9258 | 99.9258 | 99.9258 |
| 23760 | 1438851600 | 4 | 34.0385 | 34.0396 | 34.0406 |
| 23761 | 1438851600 | 4 | 84.0508 | 84.0508 | 84.0508 |
+--------+------------+-----+-----------+-----------+-----------+
32 rows in set (0.00 sec)
mysql> select * from trends partition(p20150807);
Empty set (0.00 sec)
mysql> select * from trends partition(p20150808);
Empty set (0.00 sec)
back_office:/root# date -d @1438851600 "+%Y%m%d"
20150806
mysql> desc history;
+--------+---------------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+--------+---------------------+------+-----+---------+-------+
| itemid | bigint(20) unsigned | NO | MUL | NULL | |
| clock | int(11) | NO | | 0 | |
| value | double(16,4) | NO | | 0.0000 | |
| ns | int(11) | NO | | 0 | |
+--------+---------------------+------+-----+---------+-------+
4 rows in set (0.00 sec)
mysql> show create table history\G;
*************************** 1. row ***************************
Table: history
CREATE TABLE `history` (
`itemid` bigint(20) unsigned NOT NULL,
`clock` int(11) NOT NULL DEFAULT '0',
`value` double(16,4) NOT NULL DEFAULT '0.0000',
`ns` int(11) NOT NULL DEFAULT '0',
KEY `history_1` (`itemid`,`clock`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
partition by RANGE (clock) (PARTITION p20150806 values less than (1438876800));
mysql> select * from history partition(p20150807); ---小于8号的数据
mysql> select * from history partition(p20150806); ---小于7号的数据
mysql> show create table history\G;
*************************** 1. row ***************************
Table: history
Create Table: CREATE TABLE `history` (
`itemid` bigint(20) unsigned NOT NULL,
`clock` int(11) NOT NULL DEFAULT '0',
`value` double(16,4) NOT NULL DEFAULT '0.0000',
`ns` int(11) NOT NULL DEFAULT '0',
KEY `history_1` (`itemid`,`clock`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
/*!50100 PARTITION BY RANGE (clock)
(PARTITION p20150806 VALUES LESS THAN (1438876800) ENGINE = InnoDB,
PARTITION p20150807 VALUES LESS THAN (1438963200) ENGINE = InnoDB,
[root@master ~]# date -d@1438876800 "+%Y-%m-%d"
2015-08-07
+--------+------------+---------+-----------+
| itemid | clock | value | ns |
+--------+------------+---------+-----------+
| 23756 | 1438857116 | 85.4451 | 512820947 |
| 23757 | 1438857117 | 99.9258 | 513778618 |
| 23760 | 1438857120 | 34.0288 | 517055692 |
| 23761 | 1438857121 | 84.0508 | 518021867 |
| 23731 | 1438857151 | 0.2850 | 530365388 |
| 23732 | 1438857152 | 0.0000 | 532367654 |
| 23733 | 1438857153 | 0.1500 | 533290091 |
| 23735 | 1438857155 | 98.8063 | 535482934 |
| 23736 | 1438857156 | 0.0083 | 536551204 |
| 23737 | 1438857157 | 0.4757 | 537428882 |
| 23738 | 1438857158 | 0.0000 | 537838331 |
| 23739 | 1438857159 | 0.3003 | 538566093 |
[root@master ~]# date -d@1438857116 "+%Y-%m-%d"
2015-08-06
