Re: Tuple data
Hannu Krosing <hannu@tm.ee>
From: Hannu Krosing <hannu@tm.ee>
To: Michael Richards <miker@interchange.ca>
Cc: pgsql-hackers@postgresql.org
Date: 2000-12-16T20:09:27Z
Lists: pgsql-hackers
Michael Richards wrote: > > Hi. > > I've still got something I can't seem to get. In my test cases with simple > tables the first uint16 of tuple data after the header contained the length > of the tuple. In this case I can't seem to figure out what the value F24D > stands for when I'd expect it's length to be 0800. I'm not sure, but you may see some part of the NULL bitmap. IIRC it started at a quite illogical place, is suspect it was at byte 31 but it still reserved 4bytes for each 32 fields after byte 32 > The first tuple in my table has: ... > Bitmap: 3F00 0000 00F2 > Attributes: 7 you should have only 4 bytes of bitmap for 7 real attributes > Data Offset: 36 thats' right 32+4 ---------- Hannu