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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视图和索引.md
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@@ -41,7 +41,7 @@ CREATE VIEW [IF NOT EXISTS] [db_name.]view_name -- 视图名称
CREATE VIEW IF NOT EXISTS custom_view AS SELECT empno, empno+deptno , 1+2 FROM emp;
```
<div align="center"> <img src="../pictures/hive-1-2-view.png"/> </div>
<div align="center"> <img src="https://gitee.com/heibaiying/BigData-Notes/raw/master/pictures/hive-1-2-view.png"/> </div>
@@ -95,7 +95,7 @@ table_properties:
ALTER VIEW custom_view SET TBLPROPERTIES ('create'='heibaiying','date'='2019-05-05');
```
<div align="center"> <img width="600px" src="../pictures/hive-view-properties.png"/> </div>
<div align="center"> <img width="600px" src="https://gitee.com/heibaiying/BigData-Notes/raw/master/pictures/hive-view-properties.png"/> </div>
@@ -189,7 +189,7 @@ alter index emp_index on emp rebuild;
Hive 会启动 MapReduce 作业去建立索引，建立好后查看索引表数据如下。三个表字段分别代表：索引列的值、该值对应的 HDFS 文件路径、该值在文件中的偏移量。
<div align="center"> <img width="700px" src="../pictures/hive-index-table.png"/> </div>
<div align="center"> <img width="700px" src="https://gitee.com/heibaiying/BigData-Notes/raw/master/pictures/hive-index-table.png"/> </div>
### 3.3 自动使用索引
@@ -207,7 +207,7 @@ SET hive.optimize.index.filter.compact.minsize=0;
SHOW INDEX ON emp;
```
<div align="center"> <img src="../pictures/hive-index-show.png"/> </div>
<div align="center"> <img src="https://gitee.com/heibaiying/BigData-Notes/raw/master/pictures/hive-index-show.png"/> </div>