TableEnvironment
时间: 2024-05-29 22:12:35 浏览: 10
TableEnvironment is a high-level API in Apache Flink that allows developers to interact with data sources, perform transformations, and create and execute queries on data streams or batch datasets. It provides a unified interface for creating and manipulating tables, which can be either batch tables or streaming tables.
TableEnvironment offers a variety of data sources and sinks, including CSV, JSON, Avro, Kafka, and JDBC. It also supports various operations such as filtering, grouping, aggregating, and joining tables.
TableEnvironment provides two modes of execution, batch, and stream. In batch mode, the data is processed as a batch and results are computed after all the input data has been received. In streaming mode, the data is processed in real-time as it arrives, and results are continuously updated.
TableEnvironment can be used with various programming languages, including Java, Scala, and Python, and it provides a SQL-like syntax for querying data. It is a powerful tool for data analysis, machine learning, and real-time processing of large datasets.