babefdee1c
### What changes were proposed in this pull request? Standardize sql reference ### Why are the changes needed? To have consistent docs ### Does this PR introduce any user-facing change? Yes ### How was this patch tested? Tested using jykyll build --serve Closes #26721 from huaxingao/spark-30085. Authored-by: Huaxin Gao <huaxing@us.ibm.com> Signed-off-by: Sean Owen <sean.owen@databricks.com>
2.4 KiB
| layout | title | displayTitle | license |
|---|---|---|---|
| global | DROP VIEW | DROP VIEW | Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. |
Description
DROP VIEW removes the metadata associated with a specified view from the catalog.
Syntax
{% highlight sql %} DROP VIEW [ IF EXISTS ] view_identifier {% endhighlight %}
Parameter
IF EXISTS- If specified, no exception is thrown when the view does not exists.
view_identifier-
Specifies the view name to be dropped. The view name may be optionally qualified with a database name.
Syntax:[ database_name. ] view_name
Example
{% highlight sql %}
-- Assumes a view named employeeView exists.
DROP VIEW employeeView;
+---------+--+
| Result |
+---------+--+
+---------+--+
-- Assumes a view named employeeView exists in the userdb database
DROP VIEW userdb.employeeView;
+---------+--+
| Result |
+---------+--+
+---------+--+
-- Assumes a view named employeeView does not exists.
-- 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 exists,Try with IF EXISTS
-- this time it will not throw exception
DROP VIEW IF EXISTS employeeView;
+---------+--+
| Result |
+---------+--+
+---------+--+
{% endhighlight %}