From ba39817ac4ccc6182eae720a6f54df0f66584574 Mon Sep 17 00:00:00 2001 From: amit Date: Fri, 22 Jan 2016 18:31:39 +0900 Subject: [PATCH 05/10] Add partition system catalog. Named pg_partition, it contains the following information: 1. Partition relation oid (pg_class.oid) 2. Partition parent oid 3. Whether partition is valid 4. List partition literal values 5. Range partition maximum value per key column It has a unique index on partrelid and the related syscache. Also, an index on partparent. --- doc/src/sgml/catalogs.sgml | 75 +++++++++++++++++++++++++++++++++++- src/backend/catalog/Makefile | 2 +- src/backend/utils/cache/syscache.c | 12 ++++++ src/include/catalog/indexing.h | 5 ++ src/include/catalog/pg_partition.h | 62 +++++++++++++++++++++++++++++ src/include/utils/syscache.h | 1 + 6 files changed, 155 insertions(+), 2 deletions(-) create mode 100644 src/include/catalog/pg_partition.h diff --git a/doc/src/sgml/catalogs.sgml b/doc/src/sgml/catalogs.sgml index db8d0ac..a5fe8a6 100644 --- a/doc/src/sgml/catalogs.sgml +++ b/doc/src/sgml/catalogs.sgml @@ -219,8 +219,13 @@ + pg_partition + information about partitions + + + pg_partitioned_rel - information about partitioned tables, including the partition key + information about partitioned tables @@ -4542,6 +4547,74 @@ + + <structname>pg_partition</structname> + + + pg_partition + + + + The catalog pg_partition stores + information about partitions of partitioned tables. + + + + <structname>pg_partition</> Columns + + + + + Name + Type + References + Description + + + + + + + partrelid + oid + pg_class.oid + The OID of the pg_class entry for this partition + + + + partparent + oid + pg_class.oid + The OID of the partitioned table this partition is part of + + + + partvalid + bool + + Partition is valid + + + + partlistvals + anyarray + + For partitions of list partitioned table, list of values assigned to this partition + + + + partrangemaxs + anyarray + + For partitions of range partitioned table, array of maximum values per partition key column + + + + +
+ + + <structname>pg_partitioned_rel</structname> diff --git a/src/backend/catalog/Makefile b/src/backend/catalog/Makefile index ffec071..fc85518 100644 --- a/src/backend/catalog/Makefile +++ b/src/backend/catalog/Makefile @@ -41,7 +41,7 @@ POSTGRES_BKI_SRCS = $(addprefix $(top_srcdir)/src/include/catalog/,\ pg_foreign_data_wrapper.h pg_foreign_server.h pg_user_mapping.h \ pg_foreign_table.h pg_policy.h pg_replication_origin.h \ pg_default_acl.h pg_seclabel.h pg_shseclabel.h \ - pg_collation.h pg_range.h pg_transform.h pg_partitioned_rel.h\ + pg_collation.h pg_range.h pg_transform.h pg_partitioned_rel.h pg_partition.h \ toasting.h indexing.h \ ) diff --git a/src/backend/utils/cache/syscache.c b/src/backend/utils/cache/syscache.c index f703668..fe194d5 100644 --- a/src/backend/utils/cache/syscache.c +++ b/src/backend/utils/cache/syscache.c @@ -48,6 +48,7 @@ #include "catalog/pg_opclass.h" #include "catalog/pg_operator.h" #include "catalog/pg_opfamily.h" +#include "catalog/pg_partition.h" #include "catalog/pg_partitioned_rel.h" #include "catalog/pg_proc.h" #include "catalog/pg_range.h" @@ -569,6 +570,17 @@ static const struct cachedesc cacheinfo[] = { }, 8 }, + {PartitionRelationId, /* PARTRELID */ + PartitionRelidIndexId, + 1, + { + Anum_pg_partition_partrelid, + 0, + 0, + 0 + }, + 128 + }, {PartitionedRelRelationId, /* PARTEDRELIDLEVEL */ PartitionedRelRelidLevelIndexId, 2, diff --git a/src/include/catalog/indexing.h b/src/include/catalog/indexing.h index 343204b..a2a583d 100644 --- a/src/include/catalog/indexing.h +++ b/src/include/catalog/indexing.h @@ -322,6 +322,11 @@ DECLARE_UNIQUE_INDEX(pg_partitioned_rel_partrelid_level_index, 3319, on pg_parti DECLARE_INDEX(pg_partitioned_rel_partrelid_index, 3320, on pg_partitioned_rel using btree(partrelid oid_ops)); #define PartitionedRelRelidIndexId 3320 +DECLARE_UNIQUE_INDEX(pg_partition_partrelid_index, 3322, on pg_partition using btree(partrelid oid_ops)); +#define PartitionRelidIndexId 3322 +DECLARE_INDEX(pg_partition_parent_index, 3323, on pg_partition using btree(partparent oid_ops)); +#define PartitionParentIndexId 3323 + /* last step of initialization script: build the indexes declared above */ BUILD_INDICES diff --git a/src/include/catalog/pg_partition.h b/src/include/catalog/pg_partition.h new file mode 100644 index 0000000..aa89338 --- /dev/null +++ b/src/include/catalog/pg_partition.h @@ -0,0 +1,62 @@ +/*------------------------------------------------------------------------- + * + * pg_partition.h + * definition of the system "partition" relation (pg_partition) + * along with the relation's initial contents. + * + * + * Portions Copyright (c) 1996-2015, PostgreSQL Global Development Group + * + * $PostgreSQL: pgsql/src/include/catalog/pg_partition.h $ + * + * NOTES + * the genbki.sh script reads this file and generates .bki + * information from the DATA() statements. + * + *------------------------------------------------------------------------- + */ +#ifndef PG_PARTITION_H +#define PG_PARTITION_H + +#include "catalog/genbki.h" + +/* ---------------- + * pg_partitioned_rel definition. cpp turns this into + * typedef struct FormData_pg_partitioned_rel + * ---------------- + */ +#define PartitionRelationId 3321 + +CATALOG(pg_partition,3321) BKI_WITHOUT_OIDS +{ + Oid partrelid; /* partition oid */ + Oid partparent; /* parent oid */ + bool partvalid; /* is partition valid */ + +#ifdef CATALOG_VARLEN /* variable-length fields start here */ + anyarray partlistvals; /* array of allowed values for the only + * partition column */ + anyarray partrangemaxs; /* array of rangemax values, one per + * key column */ +#endif +} FormData_pg_partition; + +/* ---------------- + * Form_pg_partition corresponds to a pointer to a tuple with + * the format of pg_partition relation. + * ---------------- + */ +typedef FormData_pg_partition *Form_pg_partition; + +/* ---------------- + * compiler constants for pg_partition + * ---------------- + */ +#define Natts_pg_partition 5 +#define Anum_pg_partition_partrelid 1 +#define Anum_pg_partition_partparent 2 +#define Anum_pg_partition_partvalid 3 +#define Anum_pg_partition_partlistvals 4 +#define Anum_pg_partition_partrangemaxs 5 + +#endif /* PG_PARTITION_H */ diff --git a/src/include/utils/syscache.h b/src/include/utils/syscache.h index 1c961c7..600047b 100644 --- a/src/include/utils/syscache.h +++ b/src/include/utils/syscache.h @@ -72,6 +72,7 @@ enum SysCacheIdentifier OPEROID, OPFAMILYAMNAMENSP, OPFAMILYOID, + PARTRELID, PARTEDRELIDLEVEL, PROCNAMEARGSNSP, PROCOID, -- 1.7.1