PostgreSQL 7.4beta4 Documentation
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# 30.5. Choosing a Connection

The SQL statements shown in the previous section are executed on the current connection, that is, the most recently opened one. If an application needs to manage multiple connections, then there are two ways to handle this.

The first option is to explicitly choose a connection for each SQL statement, for example

    EXEC SQL AT connection-name SELECT ...;

This option is particularly suitable if the application needs to use several connections in mixed order.

The second option is to execute a statement to switch the current connection. That statement is:

    SET CONNECTION connection-name;

This option is particularly convenient if many statements are to be executed on the same connection.

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