71ce3c4a6e
array_contains function Usage example: 1. create table with ARRAY column, and insert some data: ``` > select * from array_test; +------+------+--------+ | k1 | k2 | k3 | +------+------+--------+ | 1 | 2 | [1, 2] | | 2 | 3 | NULL | | 4 | NULL | [] | | 3 | NULL | NULL | +------+------+--------+ ``` 2. enable vectorized: ``` > set enable_vectorized_engine=true; ``` 3. select with array_contains: ``` > select k1,array_contains(k3,1) from array_test; +------+-------------------------+ | k1 | array_contains(`k3`, 1) | +------+-------------------------+ | 3 | NULL | | 1 | 1 | | 2 | NULL | | 4 | 0 | +------+-------------------------+ ``` 4. also we can use array_contains in where condition ``` > select * from array_test where array_contains(k3,1); +------+------+--------+ | k1 | k2 | k3 | +------+------+--------+ | 1 | 2 | [1, 2] | +------+------+--------+ ``` 5. array_position usage example ``` > select k1,k3,array_position(k3,2) from array_test; +------+--------+-------------------------+ | k1 | k3 | array_position(`k3`, 2) | +------+--------+-------------------------+ | 3 | NULL | NULL | | 1 | [1, 2] | 2 | | 2 | NULL | NULL | | 4 | [] | 0 | +------+--------+-------------------------+ ```
# 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. # fe-common This module is used to store some common classes of other modules. # spark-dpp This module is Spark DPP program, used for Spark Load function. Depends: fe-common # fe-core This module is the main process module of FE. Depends: fe-common, spark-dpp