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A db++ server will prepare a TCL interpreter for each
client connection. This interpreter will enable the server to
execute TCL code provided by the client as a sort of stored
procedures to improve the performance of database operations
by avoiding client/server data transfers and context
switches.
dbplus_tcl() needs to pass the
client connection id the TCL
script code should be executed by.
dbplus_resolve() will provide this connection id. The
function will return whatever the TCL code returns or a TCL
error message if the TCL code fails.
See also dbplus_resolve().