
DISCONNECT — terminate a database connection

## Synopsis

DISCONNECT _`connection_name`_
DISCONNECT \[ CURRENT \]
DISCONNECT ALL

## Description

`DISCONNECT` closes a connection (or all connections) to the database.

## Parameters

_`connection_name`_ [#](#ECPG-SQL-DISCONNECT-CONNECTION-NAME)

A database connection name established by the `CONNECT` command.

`CURRENT` [#](#ECPG-SQL-DISCONNECT-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.

`ALL` [#](#ECPG-SQL-DISCONNECT-ALL)

Close all open connections.

## Examples

int
main(void)
{
    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 ALL;      /\* close con2 and con1 \*/

    return 0;
}

## Compatibility

`DISCONNECT` is specified in the SQL standard.
