Tuple data
От | Michael Richards |
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Тема | Tuple data |
Дата | |
Msg-id | 04d601c06797$0d6fd790$0200a8c0@digitallis обсуждение исходный текст |
Ответы |
Re: Tuple data
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Список | pgsql-hackers |
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. The first tuple in my table has: OID: 6155665 t_cmin: 32494973 t_cmax: 0 t_xmin: 32494324 t_xmax: 32495742 t_ctid: 55181312:82 t_infomask: A503 Bitmap: 3F00000000F2 Attributes: 7 Data Offset: 36 The flags for this tuple say: HEAP_MOVED_IN HEAP_UPDATED HEAP_XMAX_COMMITTED HEAP_XMIN_INVALID HEAP_HASVARLENA HEAP_HASNULL Tuple Data: F24D 0000 FFFF FFFF 1300 0000 4E65 7720 4D61 696C 2046 6F6C 6465 7200 9F00 0000 9F00 0000 48A2 1800 The schema is: Attribute | Type | Modifier -------------+-------------+------------------------------------------------ --------userid | integer | not nullfolderid | integer | not null default nextval('folders_folderid_seq'::text)foldername | varchar(25) |messages | integer |newmessages | integer |foldersize | integer |popinfo | integer | Indices: folder_folderid_idx, folders_pkey thanks -Michael
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