77 lines
2.8 KiB
C
77 lines
2.8 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* pg_partitioned_table.h
|
|
* definition of the "partitioned table" system catalog
|
|
* (pg_partitioned_table)
|
|
*
|
|
*
|
|
* Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
* src/include/catalog/pg_partitioned_table.h
|
|
*
|
|
* NOTES
|
|
* The Catalog.pm module reads this file and derives schema
|
|
* information.
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
#ifndef PG_PARTITIONED_TABLE_H
|
|
#define PG_PARTITIONED_TABLE_H
|
|
|
|
#include "catalog/genbki.h"
|
|
#include "catalog/pg_partitioned_table_d.h"
|
|
|
|
/* ----------------
|
|
* pg_partitioned_table definition. cpp turns this into
|
|
* typedef struct FormData_pg_partitioned_table
|
|
* ----------------
|
|
*/
|
|
CATALOG(pg_partitioned_table,3350,PartitionedRelationId)
|
|
{
|
|
Oid partrelid BKI_LOOKUP(pg_class); /* partitioned table oid */
|
|
char partstrat; /* partitioning strategy */
|
|
int16 partnatts; /* number of partition key columns */
|
|
Oid partdefid BKI_LOOKUP_OPT(pg_class); /* default partition oid;
|
|
* 0 if there isn't one */
|
|
|
|
/*
|
|
* variable-length fields start here, but we allow direct access to
|
|
* partattrs via the C struct. That's because the first variable-length
|
|
* field of a heap tuple can be reliably accessed using its C struct
|
|
* offset, as previous fields are all non-nullable fixed-length fields.
|
|
*/
|
|
int2vector partattrs BKI_FORCE_NOT_NULL; /* each member of the array is
|
|
* the attribute number of a
|
|
* partition key column, or 0
|
|
* if the column is actually
|
|
* an expression */
|
|
|
|
#ifdef CATALOG_VARLEN
|
|
oidvector partclass BKI_LOOKUP(pg_opclass) BKI_FORCE_NOT_NULL; /* operator class to
|
|
* compare keys */
|
|
oidvector partcollation BKI_LOOKUP_OPT(pg_collation) BKI_FORCE_NOT_NULL; /* user-specified
|
|
* collation for keys */
|
|
pg_node_tree partexprs; /* list of expressions in the partition key;
|
|
* one item for each zero entry in partattrs[] */
|
|
#endif
|
|
} FormData_pg_partitioned_table;
|
|
|
|
/* ----------------
|
|
* Form_pg_partitioned_table corresponds to a pointer to a tuple with
|
|
* the format of pg_partitioned_table relation.
|
|
* ----------------
|
|
*/
|
|
typedef FormData_pg_partitioned_table *Form_pg_partitioned_table;
|
|
|
|
DECLARE_TOAST(pg_partitioned_table, 4165, 4166);
|
|
|
|
DECLARE_UNIQUE_INDEX_PKEY(pg_partitioned_table_partrelid_index, 3351, PartitionedRelidIndexId, pg_partitioned_table, btree(partrelid oid_ops));
|
|
|
|
MAKE_SYSCACHE(PARTRELID, pg_partitioned_table_partrelid_index, 32);
|
|
|
|
/* partattrs can contain zero (InvalidAttrNumber) to represent expressions */
|
|
DECLARE_ARRAY_FOREIGN_KEY_OPT((partrelid, partattrs), pg_attribute, (attrelid, attnum));
|
|
|
|
#endif /* PG_PARTITIONED_TABLE_H */
|