pression and <ACRONYM
CLASS="ACRONYM"
>SQL</ACRONYM
> command is first
    executed in the function, the <SPAN
CLASS="APPLICATION"
>PL/pgSQL</SPAN
> interpreter
    parses and analyzes the command to create a prepared statement,
    using the <ACRONYM
CLASS="ACRONYM"
>SPI</ACRONYM
> manager's
    <CODE
CLASS="FUNCTION"
>SPI_prepare</CODE
> function.
    Subsequent visits to that expression or command
    reuse the prepared statement.  Thus, a function with conditional code
    paths that are seldom visited 