| 程序包 | 说明 | 
|---|---|
| org.apache.flink.api.java.summarize | 
| 限定符和类型 | 类和说明 | 
|---|---|
class  | 
BooleanColumnSummary
Summary for a column of booleans. 
 | 
class  | 
NumericColumnSummary<T>
Generic Column Summary for Numeric Types. 
 | 
class  | 
ObjectColumnSummary
Summary for a column of generic Objects (this is a fallback for unsupported types). 
 | 
class  | 
StringColumnSummary
Summary for a column of Strings. 
 | 
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