I am using a SQL query in my code which is of 20100 Bytes. When I pass it to qdb_query() I get the syntax error while 
query does not have error if we run it on SQLite Manager add on.
I am suspecting that qdb_query() is not accepting 20K as input parameter.

some times qdb_query() gives syntax error and some times qdb gets crashed.but in log I can find the error as 
"bad file descriptor"