read_ctable_from_sql_async - specify a speedtable and a SQL select statement and this code invokes the SQL statement and loads the results into the specified ctable, asynchronously.  Theoretically, anyway.
read_ctable_from_sql_async - specify a speedtable and a SQL select statement
and this code invokes the SQL statement and loads the results into the
specified ctable, asynchronously.  Theoretically, anyway.

Does a Tcl error if it gets an error from postgres unless error variable
is specified, in which case it sets the error message into the error
variable and returns -1.

if successful it returns the number of tuples read, from zero on up.

read_ctable_async_poll - async poll routine invoked by
read_ctable_from_sql_async

flightaware/speedtables,flightaware/speedtables,flightaware/speedtables,flightaware/speedtables