blog/BigData-Notes
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

格式调整

Browse Source
This commit is contained in:
罗祥
2019-04-29 17:43:05 +08:00
parent 2c37679b55
commit 5758c26d8b
3 changed files with 110 additions and 75 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
notes/Hive数据查询详解.md
View File

@ -249,7 +249,7 @@ Hive支持内连接，外连接，左外连接，右外连接，笛卡尔连接
需要特别强调：JOIN语句的关联条件必须用ON指定，不能用WHERE指定，否则就会先做笛卡尔积，再过滤，这会导致你得不到预期的结果(下面的演示会有说明)。
<div align="center"> <img width="700px" src="https://github.com/heibaiying/BigData-Notes/blob/master/pictures/sql-join.jpg"/> </div>
<div align="center"> <img width="600px" src="https://github.com/heibaiying/BigData-Notes/blob/master/pictures/sql-join.jpg"/> </div>