/*
 *
 *  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 net.srt.flink.executor.constant;

/**
 * FlinkSQLConstant
 *
 * @author zrx
 * @since 2021/5/25 15:51
 **/
public interface FlinkSQLConstant {

    /**
     * 分隔符
     */
    String SEPARATOR = ";\n";
    /**
     * DDL 类型
     */
    String DDL = "DDL";
    /**
     * DML 类型
     */
    String DML = "DML";
    /**
     * DATASTREAM 类型
     */
    String DATASTREAM = "DATASTREAM";
    /**
     * 片段 Fragments 标识
     */
    String FRAGMENTS = ":=";

    /**
     * 内置日期变量前缀
     */
    String INNER_DATETIME_KEY = "_CURRENT_DATE_";

    /**
     * 内置日期变量格式
     * 确定后不能修改
     */
    String INNER_DATETIME_FORMAT = "yyyyMMdd";

}
