Js how to convert database read binary data into an array?-CodePudding

Database has a field for BLOB type of binary data storage is a lot of a floating-point number, now want to use the node from the database to read out, translates into a float array, need how to operate? My code is written, so although print is a binary number, but do not know how every 8 bytes into float!

 router. Get ('/', function (the req, res, next) {
Var SQL='SELECT data FROM client_vdata_timefft where id=19530'. 
Connection. The query (SQL, function (err, result) {
If (err) {
The console. The log (' [the SELECT ERROR] -, err. Message); 
return; 
} 
The console. The log (' -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- SELECT -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- '); 
The console. The log (result [0]. Data); 
Var float64Array=new float64Array (result [0]. The data). 
The console. The log (' -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- \ n \ n '); 
Connection. The end (); 
});