| --- |
| title: Using Languages and Extensions in HAWQ |
| --- |
| |
| <!-- |
| 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. |
| --> |
| |
| HAWQ supports user-defined functions that are created with the SQL and C built-in languages, and also supports user-defined aliases for internal functions. |
| |
| HAWQ also supports user-defined functions written in languages other than SQL and C. These other languages are generically called *procedural languages* (PLs) and are extensions to the core HAWQ functionality. HAWQ specifically supports the PL/Java, PL/Perl, PL/pgSQL, PL/Python, and PL/R procedural languages. |
| |
| HAWQ additionally provides the `pgcrypto` extension for password hashing and data encryption. |
| |
| This chapter describes these languages and extensions: |
| |
| - <a href="builtin_langs.html">Using HAWQ Built-In Languages</a> |
| - <a href="using_pljava.html">Using PL/Java</a> |
| - <a href="using_plperl.html">Using PL/Perl</a> |
| - <a href="using_plpgsql.html">Using PL/pgSQL</a> |
| - <a href="using_plpython.html">Using PL/Python</a> |
| - <a href="using_plr.html">Using PL/R</a> |
| - <a href="using_pgcrypto.html">Using pgcrypto</a> |
| |
| |
| |
| |
