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>fieldnum</A
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><H2
>Name</H2
>fieldnum -- get field number by name</DIV
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><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>fieldnum(<TT
CLASS="PARAMETER"
><I
>name</I
></TT
>)</PRE
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NAME="R2-PYGRESQL-PGQUERYOBJECT-FIELDNUM-1"
></A
><H3
>Parameters</H3
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="PARAMETER"
><I
>name</I
></TT
></DT
><DD
><P
> field name (string).
</P
></DD
></DL
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><A
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></A
><H3
>Return Type</H3
><P
></P
><DIV
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><DL
><DT
>integer</DT
><DD
><P
> field number (integer).
</P
></DD
></DL
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><A
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><H3
>Exceptions</H3
><P
></P
><DIV
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><DL
><DT
><TT
CLASS="CLASSNAME"
>TypeError</TT
></DT
><DD
><P
> Bad parameter type, or too many arguments.
</P
></DD
><DT
><TT
CLASS="CLASSNAME"
>ValueError</TT
></DT
><DD
><P
> Unknown field name.
</P
></DD
><DT
><TT
CLASS="CLASSNAME"
>pg.error</TT
></DT
><DD
><P
> Invalid query result, or invalid connection.
</P
></DD
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><H2
>Description</H2
><P
> <TT
CLASS="FUNCTION"
>fieldnum()</TT
> method returns a field number from its name.
It can be used to build a function that converts result list strings to their correct
type, using a hardcoded table definition. The number returned is the
field rank in the result values list.
</P
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