1.1 修改Hive支持中文注释
- 修改hive-site.xml中的参数
[atguigu@hadoop102 conf]$ vim hive-site.xml
<property>
<name>javax.jdo.option.ConnectionURL</name> <value>jdbc:mysql://hadoop102:3306/metastore?createDatabaseIfNotExist=true&useUnicode=true&characterEncoding=UTF-8
</value>
<description>JDBC connect string for a JDBC metastore</description>
</property>
- 进入数据库 Metastore 中执行以下 SQL 语句
(1)修改表字段注解和表注解:
alter table COLUMNS_V2 modify column COMMENT varchar(256) character set utf8;
alter table TABLE_PARAMS modify column PARAM_VALUE varchar(4000) character set utf8;
(2)修改分区字段注解:
alter table PARTITION_PARAMS modify column PARAM_VALUE varchar(4000) character set utf8;
alter table PARTITION_KEYS modify column PKEY_COMMENT varchar(4000) character set utf8;
- 测试:
hive (default)> create table student(id int COMMENT '学生ID', name string COMMENT '
学生姓名')
> COMMENT '学生表'
> PARTITIONED BY ( `date` string COMMENT '日期')
> row format delimited
> fields terminated by '\t';
desc formatted student;
查看是否能够正常显示中文