DISCONNECT — terminate a database connection
DISCONNECT connection_name
DISCONNECT [ CURRENT ]
DISCONNECT DEFAULT
DISCONNECT ALL
DISCONNECT closes a connection (or all
connections) to the database.
connection_name #
A database connection name established by
the CONNECT command.
CURRENT #
Close the “current” connection, which is either
the most recently opened connection, or the connection set by
the SET CONNECTION command. This is also
the default if no argument is given to
the DISCONNECT command.
DEFAULT #Close the default connection.
ALL #Close all open connections.
int
main(void)
{
EXEC SQL CONNECT TO testdb AS DEFAULT USER testuser;
EXEC SQL CONNECT TO testdb AS con1 USER testuser;
EXEC SQL CONNECT TO testdb AS con2 USER testuser;
EXEC SQL CONNECT TO testdb AS con3 USER testuser;
EXEC SQL DISCONNECT CURRENT; /* close con3 */
EXEC SQL DISCONNECT DEFAULT; /* close DEFAULT */
EXEC SQL DISCONNECT ALL; /* close con2 and con1 */
return 0;
}
DISCONNECT is specified in the SQL standard.