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sql-ref-syntax-aux-conf-mgmt-set.md

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SET
SET
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

The SET command sets a property, returns the value of an existing property or returns all SQLConf properties with value and meaning.

Syntax

SET
SET [ -v ]
SET property_key[ = property_value ]

Parameters

  • -v

    Outputs the key, value and meaning of existing SQLConf properties.

  • property_key

    Returns the value of specified property key.

  • property_key=property_value

    Sets the value for a given property key. If an old value exists for a given property key, then it gets overridden by the new value.

Examples

-- Set a property.
SET spark.sql.variable.substitute=false;

-- List all SQLConf properties with value and meaning.
SET -v;

-- List all SQLConf properties with value for current session.
SET;

-- List the value of specified property key.
SET spark.sql.variable.substitute;
+-----------------------------+-----+
|                          key|value|
+-----------------------------+-----+
|spark.sql.variable.substitute|false|
+-----------------------------+-----+

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