DISCONNECT
DISCONNECT — terminate a database connection
Synopsis
DISCONNECT connection_name
DISCONNECT [ CURRENT ]
DISCONNECT DEFAULT
DISCONNECT ALL
Description
DISCONNECT closes a connection (or all connections) to the database.
Parameters
connection_nameA database connection name established by the
CONNECTcommand.CURRENTClose the “current” connection, which is either the most recently opened connection, or the connection set by the
SET CONNECTIONcommand. This is also the default if no argument is given to theDISCONNECTcommand.DEFAULTClose the default connection.
ALLClose all open connections.
Examples
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;
}
Compatibility
DISCONNECT is specified in the SQL standard.