| Server IP : 103.119.228.120 / Your IP : 3.144.8.79 Web Server : Apache System : Linux v8.techscape8.com 3.10.0-1160.119.1.el7.tuxcare.els2.x86_64 #1 SMP Mon Jul 15 12:09:18 UTC 2024 x86_64 User : nobody ( 99) PHP Version : 5.6.40 Disable Function : shell_exec,symlink,system,exec,proc_get_status,proc_nice,proc_terminate,define_syslog_variables,syslog,openlog,closelog,escapeshellcmd,passthru,ocinum cols,ini_alter,leak,listen,chgrp,apache_note,apache_setenv,debugger_on,debugger_off,ftp_exec,dl,dll,myshellexec,proc_open,socket_bind,proc_close,escapeshellarg,parse_ini_filepopen,fpassthru,exec,passthru,escapeshellarg,escapeshellcmd,proc_close,proc_open,ini_alter,popen,show_source,proc_nice,proc_terminate,proc_get_status,proc_close,pfsockopen,leak,apache_child_terminate,posix_kill,posix_mkfifo,posix_setpgid,posix_setsid,posix_setuid,dl,symlink,shell_exec,system,dl,passthru,escapeshellarg,escapeshellcmd,myshellexec,c99_buff_prepare,c99_sess_put,fpassthru,getdisfunc,fx29exec,fx29exec2,is_windows,disp_freespace,fx29sh_getupdate,fx29_buff_prepare,fx29_sess_put,fx29shexit,fx29fsearch,fx29ftpbrutecheck,fx29sh_tools,fx29sh_about,milw0rm,imagez,sh_name,myshellexec,checkproxyhost,dosyayicek,c99_buff_prepare,c99_sess_put,c99getsource,c99sh_getupdate,c99fsearch,c99shexit,view_perms,posix_getpwuid,posix_getgrgid,posix_kill,parse_perms,parsesort,view_perms_color,set_encoder_input,ls_setcheckboxall,ls_reverse_all,rsg_read,rsg_glob,selfURL,dispsecinfo,unix2DosTime,addFile,system,get_users,view_size,DirFiles,DirFilesWide,DirPrintHTMLHeaders,GetFilesTotal,GetTitles,GetTimeTotal,GetMatchesCount,GetFileMatchesCount,GetResultFiles,fs_copy_dir,fs_copy_obj,fs_move_dir,fs_move_obj,fs_rmdir,SearchText,getmicrotime MySQL : ON | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : ON Directory : /usr/local/ssl/share/doc/postgresql-9.2.24/html/ |
Upload File : |
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>PL/Python - Python Procedural Language</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REV="MADE"
HREF="mailto:pgsql-docs@postgresql.org"><LINK
REL="HOME"
TITLE="PostgreSQL 9.2.24 Documentation"
HREF="index.html"><LINK
REL="UP"
TITLE="Server Programming"
HREF="server-programming.html"><LINK
REL="PREVIOUS"
TITLE="PL/Perl Under the Hood"
HREF="plperl-under-the-hood.html"><LINK
REL="NEXT"
TITLE="Python 2 vs. Python 3"
HREF="plpython-python23.html"><LINK
REL="STYLESHEET"
TYPE="text/css"
HREF="stylesheet.css"><META
HTTP-EQUIV="Content-Type"
CONTENT="text/html; charset=ISO-8859-1"><META
NAME="creation"
CONTENT="2017-11-06T22:43:11"></HEAD
><BODY
CLASS="CHAPTER"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="5"
ALIGN="center"
VALIGN="bottom"
><A
HREF="index.html"
>PostgreSQL 9.2.24 Documentation</A
></TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="top"
><A
TITLE="PL/Perl Under the Hood"
HREF="plperl-under-the-hood.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="top"
><A
HREF="server-programming.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="60%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="20%"
ALIGN="right"
VALIGN="top"
><A
TITLE="Python 2 vs. Python 3"
HREF="plpython-python23.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="CHAPTER"
><H1
><A
NAME="PLPYTHON"
></A
>Chapter 42. PL/Python - Python Procedural Language</H1
><DIV
CLASS="TOC"
><DL
><DT
><B
>Table of Contents</B
></DT
><DT
>42.1. <A
HREF="plpython-python23.html"
>Python 2 vs. Python 3</A
></DT
><DT
>42.2. <A
HREF="plpython-funcs.html"
>PL/Python Functions</A
></DT
><DT
>42.3. <A
HREF="plpython-data.html"
>Data Values</A
></DT
><DD
><DL
><DT
>42.3.1. <A
HREF="plpython-data.html#AEN59476"
>Data Type Mapping</A
></DT
><DT
>42.3.2. <A
HREF="plpython-data.html#AEN59526"
>Null, None</A
></DT
><DT
>42.3.3. <A
HREF="plpython-data.html#PLPYTHON-ARRAYS"
>Arrays, Lists</A
></DT
><DT
>42.3.4. <A
HREF="plpython-data.html#AEN59544"
>Composite Types</A
></DT
><DT
>42.3.5. <A
HREF="plpython-data.html#AEN59573"
>Set-returning Functions</A
></DT
></DL
></DD
><DT
>42.4. <A
HREF="plpython-sharing.html"
>Sharing Data</A
></DT
><DT
>42.5. <A
HREF="plpython-do.html"
>Anonymous Code Blocks</A
></DT
><DT
>42.6. <A
HREF="plpython-trigger.html"
>Trigger Functions</A
></DT
><DT
>42.7. <A
HREF="plpython-database.html"
>Database Access</A
></DT
><DD
><DL
><DT
>42.7.1. <A
HREF="plpython-database.html#AEN59710"
>Database Access Functions</A
></DT
><DT
>42.7.2. <A
HREF="plpython-database.html#PLPYTHON-TRAPPING"
>Trapping Errors</A
></DT
></DL
></DD
><DT
>42.8. <A
HREF="plpython-subtransaction.html"
>Explicit Subtransactions</A
></DT
><DD
><DL
><DT
>42.8.1. <A
HREF="plpython-subtransaction.html#AEN59861"
>Subtransaction Context Managers</A
></DT
><DT
>42.8.2. <A
HREF="plpython-subtransaction.html#AEN59876"
>Older Python Versions</A
></DT
></DL
></DD
><DT
>42.9. <A
HREF="plpython-util.html"
>Utility Functions</A
></DT
><DT
>42.10. <A
HREF="plpython-envar.html"
>Environment Variables</A
></DT
></DL
></DIV
><P
> The <SPAN
CLASS="APPLICATION"
>PL/Python</SPAN
> procedural language allows
<SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> functions to be written in the
<A
HREF="http://www.python.org"
TARGET="_top"
>Python language</A
>.
</P
><P
> To install PL/Python in a particular database, use
<TT
CLASS="LITERAL"
>CREATE EXTENSION plpythonu</TT
>, or from the shell command line use
<TT
CLASS="LITERAL"
>createlang plpythonu <TT
CLASS="REPLACEABLE"
><I
>dbname</I
></TT
></TT
> (but
see also <A
HREF="plpython-python23.html"
>Section 42.1</A
>).
</P
><DIV
CLASS="TIP"
><BLOCKQUOTE
CLASS="TIP"
><P
><B
>Tip: </B
> If a language is installed into <TT
CLASS="LITERAL"
>template1</TT
>, all subsequently
created databases will have the language installed automatically.
</P
></BLOCKQUOTE
></DIV
><P
> As of <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> 7.4, PL/Python is only
available as an <SPAN
CLASS="QUOTE"
>"untrusted"</SPAN
> language, meaning it does not
offer any way of restricting what users can do in it. It has
therefore been renamed to <TT
CLASS="LITERAL"
>plpythonu</TT
>. The trusted
variant <TT
CLASS="LITERAL"
>plpython</TT
> might become available again in future,
if a new secure execution mechanism is developed in Python. The
writer of a function in untrusted PL/Python must take care that the
function cannot be used to do anything unwanted, since it will be
able to do anything that could be done by a user logged in as the
database administrator. Only superusers can create functions in
untrusted languages such as <TT
CLASS="LITERAL"
>plpythonu</TT
>.
</P
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>Note: </B
> Users of source packages must specially enable the build of
PL/Python during the installation process. (Refer to the
installation instructions for more information.) Users of binary
packages might find PL/Python in a separate subpackage.
</P
></BLOCKQUOTE
></DIV
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="plperl-under-the-hood.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="plpython-python23.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>PL/Perl Under the Hood</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="server-programming.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Python 2 vs. Python 3</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>