On Sun, Feb 26, 2023 at 8:36 AM jack...@gmail.com wrote:
> > CID means "command ID" i.e. sequential ID assigned to commands in a
> > single session (for visibility checks, so that a query doesn't see data
> > deleted by earlier commands in the same session). See
> > src/backend/utils/time/comboci
From: Tomas Vondra
Date: 2023-02-26 23:23
To: jack...@gmail.com; pgsql-hackers
Subject: Re: Give me more details of some bits in infomask!!
On 2/26/23 15:30, jack...@gmail.com wrote:
> here are the source codes from src/include/access/htup_details.h.
> /*
> * information stored in t
On 2/26/23 15:30, jack...@gmail.com wrote:
> here are the source codes from src/include/access/htup_details.h.
> /*
> * information stored in t_infomask:
> */
> #define HEAP_HASNULL0x0001/* has null attribute(s) */
> #define HEAP_HASVARWIDTH0x0002/* has variable-width attribute(s) */
> #define HE
here are the source codes from src/include/access/htup_details.h.
/*
* information stored in t_infomask:
*/
#define HEAP_HASNULL 0x0001 /* has null attribute(s) */
#define HEAP_HASVARWIDTH 0x0002 /* has variable-width attribute(s) */
#define HEAP_HASEXTERNAL 0x0004 /* has external stored attribut
