.. ################################################################################ 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. ################################################################################ =========== Expressions =========== .. currentmodule:: pyflink.table.expressions .. autosummary:: :toctree: api/ col lit range_ and_ or_ not_ current_database current_date current_time current_timestamp current_watermark local_time local_timestamp to_date to_timestamp to_timestamp_ltz temporal_overlaps date_format timestamp_diff convert_tz from_unixtime unix_timestamp array row map_ row_interval pi e rand rand_integer atan2 negative concat concat_ws uuid null_of log source_watermark if_then_else coalesce with_columns without_columns json_string json_object json_object_agg json_array json_array_agg call call_sql