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罗祥
2020-05-25 11:05:03 +08:00
parent 0d6f0c8cc6
commit 7bcf53a7b2
85 changed files with 391 additions and 391 deletions
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notes/Hive常用DML操作.md
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@@ -65,7 +65,7 @@ LOAD DATA INPATH "hdfs://hadoop001:8020/mydir/emp.txt" OVERWRITE INTO TABLE emp
加载后表中数据如下,分区列 deptno 全部赋值成 20：
<div align="center"> <img src="../pictures/hive-emp-ptn.png"/> </div>
<div align="center"> <img src="https://gitee.com/heibaiying/BigData-Notes/raw/master/pictures/hive-emp-ptn.png"/> </div>
## 二、查询结果插入到表
@@ -140,7 +140,7 @@ CREATE TABLE emp(
load data local inpath "/usr/file/emp.txt" into table emp;
```
​ 完成后 `emp` 表中数据如下：
<div align="center"> <img src="../pictures/hive-emp.png"/> </div>
<div align="center"> <img src="https://gitee.com/heibaiying/BigData-Notes/raw/master/pictures/hive-emp.png"/> </div>
2. 为清晰演示，先清空 `emp_ptn` 表中加载的数据：
@@ -157,7 +157,7 @@ SELECT empno,ename,job,mgr,hiredate,sal,comm FROM emp WHERE deptno=20;
​ 完成后 `emp_ptn` 表中数据如下：
<div align="center"> <img src="../pictures/hive-emp-deptno-20.png"/> </div>
<div align="center"> <img src="https://gitee.com/heibaiying/BigData-Notes/raw/master/pictures/hive-emp-deptno-20.png"/> </div>
4. 接着演示动态分区：
@@ -172,7 +172,7 @@ SELECT empno,ename,job,mgr,hiredate,sal,comm,deptno FROM emp WHERE deptno=30;
​ 完成后 `emp_ptn` 表中数据如下：
<div align="center"> <img src="../pictures/hive-emp-deptno-20-30.png"/> </div>
<div align="center"> <img src="https://gitee.com/heibaiying/BigData-Notes/raw/master/pictures/hive-emp-deptno-20-30.png"/> </div>
@@ -261,7 +261,7 @@ INSERT INTO TABLE emp_ts VALUES (1,"ming"),(2,"hong");
插入数据依靠的是 MapReduce 作业，执行成功后数据如下：
<div align="center"> <img src="../pictures/hive-emp-ts.png"/> </div>
<div align="center"> <img src="https://gitee.com/heibaiying/BigData-Notes/raw/master/pictures/hive-emp-ts.png"/> </div>
**4. 测试更新和删除**
@@ -275,7 +275,7 @@ DELETE FROM emp_ts WHERE empno=2;
更新和删除数据依靠的也是 MapReduce 作业，执行成功后数据如下：
<div align="center"> <img src="../pictures/hive-emp-ts-2.png"/> </div>
<div align="center"> <img src="https://gitee.com/heibaiying/BigData-Notes/raw/master/pictures/hive-emp-ts-2.png"/> </div>
## 五、查询结果写出到文件系统
@@ -317,7 +317,7 @@ SELECT * FROM emp_ptn;
导出结果如下：
<div align="center"> <img src="../pictures/hive-ouput.png"/> </div>
<div align="center"> <img src="https://gitee.com/heibaiying/BigData-Notes/raw/master/pictures/hive-ouput.png"/> </div>