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docs: clarify plpython SD and GD dictionary behavior

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Reported-by: Adam Bielański

Discussion: https://postgr.es/m/153484305538.1370.7605856225879294548@wrigleys.postgresql.org

Backpatch-through: 9.3
This commit is contained in:
Bruce Momjian
2018-08-25 11:52:29 -04:00
parent 5ec70a9286
commit 06d47f6dc6
1 changed files with 2 additions and 2 deletions
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doc/src/sgml/plpython.sgml
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@@ -734,9 +734,9 @@ SELECT * FROM multiout_simple_setof(3);
<title>Sharing Data</title> <title>Sharing Data</title>
<para> <para>
The global dictionary <varname>SD</varname> is available to store The global dictionary <varname>SD</varname> is available to store
data between function calls. This variable is private static data. private data between repeated calls to the same function.
The global dictionary <varname>GD</varname> is public data, The global dictionary <varname>GD</varname> is public data,
available to all Python functions within a session. Use with that is available to all Python functions within a session; use with
care.<indexterm><primary>global data</> care.<indexterm><primary>global data</>
<secondary>in PL/Python</></indexterm> <secondary>in PL/Python</></indexterm>
</para> </para>