Postgres-XC 1.0.4 Documentation
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41.5. Anonymous Code Blocks

Note: At present, this section is just taken from PostgreSQL documentation and is subject to revision for Postgres-XC.

PL/Python also supports anonymous code blocks called with the DO statement: 

DO $$
    # PL/Python code
$$ LANGUAGE plpythonu;

An anonymous code block receives no arguments, and whatever value it might return is discarded. Otherwise it behaves just like a function.

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