This method compares a register value with
NULL; if the register value is null, then the
interpreted program jumps to the specified label.
int branch_eq_null ( Uint32 RegLvalue, Uint32 Label )
This method takes two parameters, the register whose value is to
be compared with
RegLvalue) and the program
Label to jump to if
RegLvalue is null.
Label must have been defined
Section 18.104.22.168, “NdbInterpretedCode::def_label()”).
0 on success,