EVOLUTION-MANAGER

Edit File: dblink_error_message.3

'\" t
.\"     Title: dblink_error_message
.\"    Author: The PostgreSQL Global Development Group
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 2025
.\"    Manual: PostgreSQL 14.18 Documentation
.\"    Source: PostgreSQL 14.18
.\"  Language: English
.\"
.TH "DBLINK_ERROR_MESSAGE" "3" "2025" "PostgreSQL 14.18" "PostgreSQL 14.18 Documentation"
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.el       .ds Aq '
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.nh
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.SH "NAME"
dblink_error_message \- gets last error message on the named connection
.SH "SYNOPSIS"
.sp
.nf
dblink_error_message(text connname) returns text
.fi
.SH "DESCRIPTION"
.PP
\fBdblink_error_message\fR
fetches the most recent remote error message for a given connection\&.
.SH "ARGUMENTS"
.PP
\fIconnname\fR
.RS 4
Name of the connection to use\&.
.RE
.SH "RETURN VALUE"
.PP
Returns last error message, or
OK
if there has been no error in this connection\&.
.SH "NOTES"
.PP
When asynchronous queries are initiated by
\fBdblink_send_query\fR, the error message associated with the connection might not get updated until the server\*(Aqs response message is consumed\&. This typically means that
\fBdblink_is_busy\fR
or
\fBdblink_get_result\fR
should be called prior to
\fBdblink_error_message\fR, so that any error generated by the asynchronous query will be visible\&.
.SH "EXAMPLES"
.sp
.if n \{\
.RS 4
.\}
.nf
SELECT dblink_error_message(\*(Aqdtest1\*(Aq);
.fi
.if n \{\
.RE
.\}