DROP VIEW

从目录中删除与指定视图关联的元数据。

语法

DROP VIEW [ IF EXISTS ] view_identifier

参数

  • IF EXISTS

    如果已指定,则在视图不存在时不会引发异常。

  • view_identifier

    要删除的视图名称。 可以选择使用数据库名称来限定视图名称。

    语法: [database_name.] view_name

示例

-- Assumes a view named `employeeView` exists.
DROP VIEW employeeView;

-- Assumes a view named `employeeView` exists in the `userdb` database
DROP VIEW userdb.employeeView;

-- Assumes a view named `employeeView` does not exist.
-- Throws exception
DROP VIEW employeeView;
Error: org.apache.spark.sql.AnalysisException: Table or view not found: employeeView;
(state=,code=0)

-- Assumes a view named `employeeView` does not exist,Try with IF EXISTS
-- this time it will not throw exception
DROP VIEW IF EXISTS employeeView;