Changes between Version 35 and Version 36 of FAQ

Timestamp:

Mar 25, 2010, 2:51:08 PM (14 years ago)

Author:

Peter Baumann

Comment:

—

FAQ

@@ -42 +42 @@
 
       {{{ tcpip_socket = true }}}
+
+ * '''Q: Aggregation result from ''select max_cells(c.0) from rgb as c'': If I send this query via command line (rasql utility), then the result is 255; if I send this query via RasJ, then the result is -1.'''
+
+   A: Java does not have an 8-bit unsigned data type. Byte is a signed 8 bit and hence 255 is represented as -1. What you can do is to transform bytes to char by adding 2^8 if the 2^7 bit is set. Tested, works.
+