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><A
NAME="PROTOCOL-ERROR-FIELDS"
>44.5. Error and Notice Message Fields</A
></H1
><P
>This section describes the fields that may appear in ErrorResponse and
NoticeResponse messages.  Each field type has a single-byte identification
token.  Note that any given field type should appear at most once per
message.</P
><P
></P
><DIV
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><DL
><DT
><TT
CLASS="LITERAL"
>S</TT
></DT
><DD
><P
>        Severity: the field contents are
        <TT
CLASS="LITERAL"
>ERROR</TT
>, <TT
CLASS="LITERAL"
>FATAL</TT
>, or
        <TT
CLASS="LITERAL"
>PANIC</TT
> (in an error message), or
        <TT
CLASS="LITERAL"
>WARNING</TT
>, <TT
CLASS="LITERAL"
>NOTICE</TT
>, <TT
CLASS="LITERAL"
>DEBUG</TT
>,
        <TT
CLASS="LITERAL"
>INFO</TT
>, or <TT
CLASS="LITERAL"
>LOG</TT
> (in a notice message),
        or a localized translation of one of these.  Always present.</P
></DD
><DT
><TT
CLASS="LITERAL"
>C</TT
></DT
><DD
><P
>        Code: the SQLSTATE code for the error (see <A
HREF="errcodes-appendix.html"
>Appendix A</A
>).  Not localizable.  Always present.</P
></DD
><DT
><TT
CLASS="LITERAL"
>M</TT
></DT
><DD
><P
>        Message: the primary human-readable error message.
        This should be accurate but terse (typically one line).
        Always present.</P
></DD
><DT
><TT
CLASS="LITERAL"
>D</TT
></DT
><DD
><P
>        Detail: an optional secondary error message carrying more
        detail about the problem.  May run to multiple lines.</P
></DD
><DT
><TT
CLASS="LITERAL"
>H</TT
></DT
><DD
><P
>        Hint: an optional suggestion what to do about the problem.
        This is intended to differ from Detail in that it offers advice
        (potentially inappropriate) rather than hard facts.
        May run to multiple lines.</P
></DD
><DT
><TT
CLASS="LITERAL"
>P</TT
></DT
><DD
><P
>        Position: the field value is a decimal ASCII integer, indicating
        an error cursor position as an index into the original query string.
        The first character has index 1, and positions are measured in
        characters not bytes.</P
></DD
><DT
><TT
CLASS="LITERAL"
>p</TT
></DT
><DD
><P
>        Internal position: this is defined the same as the <TT
CLASS="LITERAL"
>P</TT
>
        field, but it is used when the cursor position refers to an internally
        generated command rather than the one submitted by the client.
        The <TT
CLASS="LITERAL"
>q</TT
> field will always appear when this field appears.</P
></DD
><DT
><TT
CLASS="LITERAL"
>q</TT
></DT
><DD
><P
>        Internal query: the text of a failed internally-generated command.
        This could be, for example, a SQL query issued by a PL/pgSQL function.</P
></DD
><DT
><TT
CLASS="LITERAL"
>W</TT
></DT
><DD
><P
>        Where: an indication of the context in which the error occurred.
        Presently this includes a call stack traceback of active
        procedural language functions and internally-generated queries.
        The trace is one entry per line, most recent first.</P
></DD
><DT
><TT
CLASS="LITERAL"
>F</TT
></DT
><DD
><P
>        File: the file name of the source-code location where the error
        was reported.</P
></DD
><DT
><TT
CLASS="LITERAL"
>L</TT
></DT
><DD
><P
>        Line: the line number of the source-code location where the error
        was reported.</P
></DD
><DT
><TT
CLASS="LITERAL"
>R</TT
></DT
><DD
><P
>        Routine: the name of the source-code routine reporting the error.</P
></DD
></DL
></DIV
><P
>The client is responsible for formatting displayed information to meet its
needs; in particular it should break long lines as needed.  Newline characters
appearing in the error message fields should be treated as paragraph breaks,
not line breaks.</P
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