程序包的使用
org.apache.flink.table.functions

使用org.apache.flink.table.functions的程序包

程序包	说明
org.apache.flink.table.functions

org.apache.flink.table.functions使用的org.apache.flink.table.functions中的类

类和说明
FunctionContext A FunctionContext allows to obtain global runtime information about the context in which the user-defined function is executed.
UserDefinedFunction Base class for all user-defined functions such as scalar functions, table functions, or aggregation functions.