mycat1.6.5分片（范围）

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说明：根据字段按照范围分片。

注释：字段为数字类型。

一、conf/schema.xml文件

<!DOCTYPE mycat:schema SYSTEM "schema.dtd"><mycat:schema xmlns:mycat="http://io.mycat/"><schema name="TESTDB" checkSQLschema="false" sqlMaxLimit="100"><table name="auto_sharding_long" primaryKey="id" dataNode="dn0,dn1,dn2"   rule="auto-sharding-long" />   </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="auto-sharding-long"><rule><columns>age</columns><algorithm>rang-long</algorithm></rule></tableRule><function name="rang-long"class="io.mycat.route.function.AutoPartitionByLong"><property name="mapFile">fun/autopartition-long.txt</property><property name="defaultNode">0</property></function></mycat:rule>

三、规则文件信息autopartition-long.txt

# range start-end ,data node index# K=1000,M=10000.0-20=020-30=131-60=2

四、测试用到的sql

=============按照age字段范围================CREATE TABLE  auto_sharding_long  (`age`  int NOT NULL ,`db_nm`  varchar(20) NULL);INSERT INTO auto_sharding_long (age,db_nm) VALUES (10, database());INSERT INTO auto_sharding_long (age,db_nm) VALUES (20, database());INSERT INTO auto_sharding_long (age,db_nm) VALUES (40, database());select * from auto_sharding_long;

五、注意事项：

1、schema里的table的dataNode节点个数必须：大于等于 partition-hash-int.txt里的配置个数

2、序号节点从0开始

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