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- The argument values supplied to a PL/Perl function's code are
- simply the input arguments converted to text form (just as if they
- had been displayed by a <code class="command">SELECT</code> statement).
- Conversely, the <code class="function">return</code> and <code class="function">return_next</code>
- commands will accept any string that is acceptable input format
- for the function's declared return type.
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