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Update Spark_Structured_API的基本使用.md

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notes/Spark_Structured_API的基本使用.md
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@ -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