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Documentation of the system catalogs, directed toward PostgreSQL developers

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<chapter id="catalogs">

<entry><type>bool</type></entry>

<entry></entry>

<entry>

This is a trusted language. If this is an internal

language (<structfield>lanispl</structfield> is false) then

this column is meaningless.

True if this is a trusted language, which means that it is believed

not to grant access to anything outside the normal SQL execution

environment. Only superusers may create functions in untrusted

languages.

</entry>

</row>