mycat1.6.5分片(按小时)

mycat one群：106088787。
说明：根据字段按照一天内的小时分片。
注释：字段为字符串类型，yyyymmddHH 10位。
一、conf/schema.xml文件<?xml version="1.0"?>
<!DOCTYPE mycat:schema SYSTEM "schema.dtd">
<mycat:schema xmlns:mycat="http://io.mycat/">
<schema name="TESTDB" checkSQLschema="false" sqlMaxLimit="100">
<table name="sharding_by_hour" primaryKey="id" dataNode="dn$0-2"
rule="sharding-by-hour" />
</schema>
<dataNode name="dn0" dataHost="dh-1" database="db0"/>
<dataNode name="dn1" dataHost="dh-1" database="db1"/>
<dataNode name="dn2" dataHost="dh-1" database="db2"/>
<dataHost name="dh-1" maxCon="1000" minCon="10" balance="0"
writeType="0" dbType="mysql" dbDriver="native" switchType="1" slaveThreshold="100">
<heartbeat>select user()</heartbeat>
<writeHost host="hostM1" url="localhost:3306" user="root"
password="123456">
</writeHost>
</dataHost>
</mycat:schema>二、conf/rule.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mycat:rule SYSTEM "rule.dtd">
<mycat:rule xmlns:mycat="http://io.mycat/">
<tableRule name="sharding-by-hour">
<rule>
<columns>sharding_col</columns>
<algorithm>sharding-by-hour</algorithm>
</rule>
</tableRule>
<function name="sharding-by-hour"
class="io.mycat.route.function.LatestMonthPartion">
<property name="splitOneDay">3</property>
</function>
</mycat:rule>

三、规则文件信息
无
四、测试用到的sql=============按照create_time字段 按 小时分================
CREATE TABLE sharding_by_hour (create_time timestamp NULL ON UPDATE CURRENT_TIMESTAMP ,`db_nm` varchar(20) NULL,sharding_col varchar(10) null);
INSERT INTO sharding_by_hour (sharding_col,create_time,db_nm) VALUES ('2017100101','2017-10-01', database());
INSERT INTO sharding_by_hour (sharding_col,create_time,db_nm) VALUES ('2017100108','2017-10-01', database());
INSERT INTO sharding_by_hour (sharding_col,create_time,db_nm) VALUES ('2017100109','2017-10-01', database());
INSERT INTO sharding_by_hour (sharding_col,create_time,db_nm) VALUES ('2017100116','2017-10-01', database());
INSERT INTO sharding_by_hour (sharding_col,create_time,db_nm) VALUES ('2017100117','2017-10-01', database());
INSERT INTO sharding_by_hour (sharding_col,create_time,db_nm) VALUES ('2017100123','2017-10-01', database());
select * from sharding_by_hour;五、注意事项
1、分片数必须跟dataNode节点数一致
2、最大分24个分片
3、分片字段的值必须是字符串，如：2017102112.(即为2017年10月21日12点)
六、参数说明
columns： 拆分字段，字符串类型（yyyymmddHH）
splitOneDay ： 一天切分的分片数