| --- |
| { |
| "title": "EXTRACT_URL_PARAMETER", |
| "language": "en" |
| } |
| --- |
| |
| <!-- |
| 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. |
| --> |
| |
| ## extract_url_parameter |
| ### description |
| #### Syntax |
| |
| `VARCHAR extract_url_parameter(VARCHAR url, VARCHAR name)` |
| |
| |
| Returns the value of the "name" parameter in the URL, if present. Otherwise an empty string. |
| If there are many parameters with this name, the first occurrence is returned. |
| This function works assuming that the parameter name is encoded in the URL exactly as it was in the passed parameter. |
| |
| ``` |
| mysql> SELECT extract_url_parameter ("http://doris.apache.org?k1=aa&k2=bb&test=cc#999", "k2"); |
| +--------------------------------------------------------------------------------+ |
| | extract_url_parameter('http://doris.apache.org?k1=aa&k2=bb&test=cc#999', 'k2') | |
| +--------------------------------------------------------------------------------+ |
| | bb | |
| +--------------------------------------------------------------------------------+ |
| ``` |
| |
| If you want to get other part of URL, you can use [parse_url](./parse_url.md). |
| |
| ### keywords |
| EXTRACT URL PARAMETER |
