62 lines
2.1 KiB
C
62 lines
2.1 KiB
C
/*-------------------------------------------------------------------------
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*
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* pg_partitioned_table.h
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* definition of the system "partitioned table" relation
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*
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*
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* Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
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*
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* src/include/catalog/pg_partitioned_table.h
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*
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* NOTES
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* The Catalog.pm module reads this file and derives schema
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* information.
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PG_PARTITIONED_TABLE_H
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#define PG_PARTITIONED_TABLE_H
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#include "catalog/genbki.h"
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#include "catalog/pg_partitioned_table_d.h"
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/* ----------------
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* pg_partitioned_table definition. cpp turns this into
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* typedef struct FormData_pg_partitioned_table
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* ----------------
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*/
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CATALOG(pg_partitioned_table,3350,PartitionedRelationId) BKI_WITHOUT_OIDS
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{
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Oid partrelid; /* partitioned table oid */
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char partstrat; /* partitioning strategy */
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int16 partnatts; /* number of partition key columns */
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Oid partdefid; /* default partition oid; InvalidOid if there
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* isn't one */
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/*
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* variable-length fields start here, but we allow direct access to
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* partattrs via the C struct. That's because the first variable-length
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* field of a heap tuple can be reliably accessed using its C struct
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* offset, as previous fields are all non-nullable fixed-length fields.
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*/
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int2vector partattrs; /* each member of the array is the attribute
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* number of a partition key column, or 0 if
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* the column is actually an expression */
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#ifdef CATALOG_VARLEN
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oidvector partclass; /* operator class to compare keys */
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oidvector partcollation; /* user-specified collation for keys */
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pg_node_tree partexprs; /* list of expressions in the partition key;
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* one item for each zero entry in partattrs[] */
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#endif
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} FormData_pg_partitioned_table;
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/* ----------------
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* Form_pg_partitioned_table corresponds to a pointer to a tuple with
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* the format of pg_partitioned_table relation.
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* ----------------
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*/
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typedef FormData_pg_partitioned_table *Form_pg_partitioned_table;
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#endif /* PG_PARTITIONED_TABLE_H */
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