Unable to create user-defined function in C++

jitendramishra

While I try to deploying user-defined function developed in C++, I'm getting this error "Tried to copy a 20-byte string to 7-byte VString object; VString is too small". Kindly help me with this. Thanks in advance.

skeswani

can you post your code?

jitendramishra

@skeswani Please find an attached text file

skeswani

the problem I think is here

returnType.addVarchar(t.getStringLength());

this result in the copy of a buf which is 20 bytes into a response that is 7 bytes

resWriter.getStringRef().copy(buf);

change this to

returnType.addVarchar(20) ;

note, putting s '>' sign before the line will help format the code correctly in the forums

skeswani

20 or more, this is the output return type for the scalar function. basically the scalar function return varchar(20) in this case. but maybe you want to make it varchar(32) for good measure

jitendramishra

@skeswani Thanks its work.