SET CONNECTION — select a database connection
SET CONNECTION [ TO | = ] connection_name
SET CONNECTION sets the “current” database connection, which is the one that all commands use unless overridden.
connection_nameA database connection name established by the CONNECT command.
CURRENTSet the connection to the current connection (thus, nothing happens).
EXEC SQL SET CONNECTION TO con2; EXEC SQL SET CONNECTION = con1;
SET CONNECTION is specified in the SQL standard.
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