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| title: Using Languages and Extensions in HAWQ |
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| 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. |
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| 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. |
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| HAWQ additionally provides the `pgcrypto` extension for password hashing and data encryption. |
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| This chapter describes these languages and extensions: |
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| - <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> |
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