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SHOW CATALOGS;
SELECT current_catalog;

CREATE SCHEMA IF NOT EXISTS hive.wedata_demo_db;

-- 创建一个用户信息表
create table if not exists hive.wedata_demo_db.user_info (
user_id string COMMENT '用户ID',
user_name string COMMENT '用户名称',
user_age int COMMENT '年龄',
city string  COMMENT '城市'
) COMMENT '用户信息表';

-- 向用户信息表中插入数据
insert into hive.wedata_demo_db.user_info values ('001', '张三', 28, 'beijing');
insert into hive.wedata_demo_db.user_info values ('002', '李四', 35, 'shanghai');
insert into hive.wedata_demo_db.user_info values ('003', '王五', 22, 'shenzhen');
insert into hive.wedata_demo_db.user_info values ('004', '赵六', 45, 'guangzhou');
insert into hive.wedata_demo_db.user_info values ('005', '小明', 20, 'beijing');
insert into hive.wedata_demo_db.user_info values ('006', '小红', 30, 'shanghai');
insert into hive.wedata_demo_db.user_info values ('007', '小刚', 25, 'shenzhen');
insert into hive.wedata_demo_db.user_info values ('008', '小李', 40, 'guangzhou');
insert into hive.wedata_demo_db.user_info values ('009', '小张', 23, 'beijing');
insert into hive.wedata_demo_db.user_info values ('010', '小王', 50, 'shanghai');

-- 查询数据
select  * from  hive.wedata_demo_db.user_info;