>> I'm trying to debug a modification for the query planner. But I found it >> seems the data structure of my planned query is incorrect. I was trying to >> print out the data structure by use the "p" command in gdb which is quite >> inconvenient and takes time. May I know is there any embedded function in >> postgres to print out the node data structures, or any other plan related >> data structures? Thanks.
> I think nodeToString() would help.
For interactive use in gdb, I generally do
call pprint(..node pointer..)
which prints to the postmaster log.
regards, tom lane
Thanks, Tom, this call pprint() works very nice. -- Best Regards Huang Qi Victor