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db_include/catalog/pg_partitioned_table.h

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+/*-------------------------------------------------------------------------
+ *
+ * pg_partitioned_table.h
+ *	  definition of the "partitioned table" system catalog
+ *	  (pg_partitioned_table)
+ *
+ *
+ * Portions Copyright (c) 1996-2021, 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, on pg_partitioned_table using btree(partrelid oid_ops));
+#define PartitionedRelidIndexId			 3351
+
+/* partattrs can contain zero (InvalidAttrNumber) to represent expressions */
+DECLARE_ARRAY_FOREIGN_KEY_OPT((partrelid, partattrs), pg_attribute, (attrelid, attnum));
+
+#endif							/* PG_PARTITIONED_TABLE_H */