blob: bbd8c054ce295f06626c8f63c22ce0b083f2b356 [file] [log] [blame]
/*
* 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.
*/
package org.apache.ignite.internal.sql.engine.schema;
/**
* The strategy of default value computation for a particular column.
*/
public enum DefaultValueStrategy {
/** Default value is not specified, thus {@code null} will be used instead. */
DEFAULT_NULL,
/**
* Default value is specified as a constant, thus may be inlined into the final plan.
*
* <p>Note: the value may still be {@code null} if someone specify this explicitly.
*/
DEFAULT_CONSTANT,
/** Default value is specified as an expression and will be evaluated at a runtime. */
DEFAULT_COMPUTED
}