Special Variables
The following variables are predefined or have a special meaning:
oql$variables : list containing the name of all variables
oql$functions : list containing the name of all functions
oql$result : the result atom of the last statement
oql$db : object atom instance of the classdatabase denoting the current database
oql$minint : the minimal integer 0x8000000000000000
oql$maxint : the maximal integer 0x7FFFFFFFFFFFFFFF
oql$minfloat : the minimal float 4.94065645841246544e-324
oql$maxfloat : the maximal float 1.79769313486231570e+308
EyeDB manual