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revert "warn of SECURITY DEFINER schemas for non-sql_body funcs"
doc revert of commit 1703726. Change was applied to irrelevant branches, and was not detailed enough to be helpful in relevant branches. Reported-by: Peter Eisentraut, Noah Misch Discussion: https://postgr.es/m/a2dc9de4-24fc-3222-87d3-0def8057d7d8@enterprisedb.com Backpatch-through: 10
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doc/src/sgml/ref/create_function.sgml

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@@ -753,10 +753,7 @@ SELECT * FROM dup(42);
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<para>
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Because a <literal>SECURITY DEFINER</literal> function is executed
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with the privileges of the user that owns it, care is needed to
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ensure that the function cannot be misused. This is particularly
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important for non-<replaceable>sql_body</replaceable> functions because
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their function bodies are evaluated at run-time, not creation time.
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For security,
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ensure that the function cannot be misused. For security,
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<xref linkend="guc-search-path"> should be set to exclude any schemas
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writable by untrusted users. This prevents
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malicious users from creating objects (e.g., tables, functions, and

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