greenplumn pg_attrdef 源码
greenplumn pg_attrdef 代码
文件路径：/src/include/catalog/pg_attrdef.h
/*-------------------------------------------------------------------------
*
* pg_attrdef.h
* definition of the "attribute defaults" system catalog (pg_attrdef)
*
*
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/catalog/pg_attrdef.h
*
* NOTES
* The Catalog.pm module reads this file and derives schema
* information.
*
*-------------------------------------------------------------------------
*/
#ifndef PG_ATTRDEF_H
#define PG_ATTRDEF_H
#include "catalog/genbki.h"
#include "catalog/pg_attrdef_d.h"
/* ----------------
* pg_attrdef definition. cpp turns this into
* typedef struct FormData_pg_attrdef
* ----------------
*/
CATALOG(pg_attrdef,2604,AttrDefaultRelationId)
{
Oid oid; /* oid */
Oid adrelid; /* OID of table containing attribute */
int16 adnum; /* attnum of attribute */
#ifdef CATALOG_VARLEN /* variable-length fields start here */
pg_node_tree adbin BKI_FORCE_NOT_NULL; /* nodeToString representation of
* default */
#endif
} FormData_pg_attrdef;
/* GPDB added foreign key definitions for gpcheckcat. */
FOREIGN_KEY(adrelid REFERENCES pg_attribute(attrelid));
/* ----------------
* Form_pg_attrdef corresponds to a pointer to a tuple with
* the format of pg_attrdef relation.
* ----------------
*/
typedef FormData_pg_attrdef *Form_pg_attrdef;
#endif /* PG_ATTRDEF_H */
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