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CentOS 7.0 - man page for dblink_is_busy (centos section 3)

DBLINK_IS_BUSY(3)		  PostgreSQL 9.2.7 Documentation		DBLINK_IS_BUSY(3)

NAME
       dblink_is_busy - checks if connection is busy with an async query

SYNOPSIS
       dblink_is_busy(text connname) returns int

DESCRIPTION
       dblink_is_busy tests whether an async query is in progress.

ARGUMENTS
       conname
	   Name of the connection to check.

RETURN VALUE
       Returns 1 if connection is busy, 0 if it is not busy. If this function returns 0, it is
       guaranteed that dblink_get_result will not block.

EXAMPLES
	   SELECT dblink_is_busy('dtest1');

PostgreSQL 9.2.7			    2014-02-17				DBLINK_IS_BUSY(3)


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