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

modify

Browse Source
This commit is contained in:
罗祥 2019-06-04 17:28:40 +08:00
commit ef71c9d5f8
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
notes/Spark_Structured_API的基本使用.md
View File

@ -69,7 +69,7 @@ caseClassDS.show()
### 1.3 由RDD创建DataFrame
Spark支持两种方式把RDD转换为DataFrame，分别是使用反射推断和指定Schema转换。
Spark支持两种方式把RDD转换为DataFrame，分别是使用反射推断和指定Schema转换：
#### 1. 使用反射推断
@ -241,4 +241,4 @@ spark.sql("SELECT ename,job FROM global_temp.gemp").show()
## 参考资料
[Spark SQL, DataFrames and Datasets Guide > Getting Started](https://spark.apache.org/docs/latest/sql-getting-started.html)
[Spark SQL, DataFrames and Datasets Guide > Getting Started](https://spark.apache.org/docs/latest/sql-getting-started.html)