pg_type
A system table which stores information about data types
pg_type is a system catalogue table which stores information about data types.
pg_type has always been present in PostgreSQL.
Definition by PostgreSQL version
pg_type (PostgreSQL 15)
Table "pg_catalog.pg_type"
Column | Type | Collation | Nullable | Default
----------------+--------------+-----------+----------+---------
oid | oid | | not null |
typname | name | | not null |
typnamespace | oid | | not null |
typowner | oid | | not null |
typlen | smallint | | not null |
typbyval | boolean | | not null |
typtype | "char" | | not null |
typcategory | "char" | | not null |
typispreferred | boolean | | not null |
typisdefined | boolean | | not null |
typdelim | "char" | | not null |
typrelid | oid | | not null |
typsubscript | regproc | | not null |
typelem | oid | | not null |
typarray | oid | | not null |
typinput | regproc | | not null |
typoutput | regproc | | not null |
typreceive | regproc | | not null |
typsend | regproc | | not null |
typmodin | regproc | | not null |
typmodout | regproc | | not null |
typanalyze | regproc | | not null |
typalign | "char" | | not null |
typstorage | "char" | | not null |
typnotnull | boolean | | not null |
typbasetype | oid | | not null |
typtypmod | integer | | not null |
typndims | integer | | not null |
typcollation | oid | | not null |
typdefaultbin | pg_node_tree | C | |
typdefault | text | C | |
typacl | aclitem[] | | |
Indexes:
"pg_type_oid_index" PRIMARY KEY, btree (oid)
"pg_type_typname_nsp_index" UNIQUE CONSTRAINT, btree (typname, typnamespace)
Documentation: pg_type
pg_type (PostgreSQL 14)
Table "pg_catalog.pg_type"
Column | Type | Collation | Nullable | Default
----------------+--------------+-----------+----------+---------
oid | oid | | not null |
typname | name | | not null |
typnamespace | oid | | not null |
typowner | oid | | not null |
typlen | smallint | | not null |
typbyval | boolean | | not null |
typtype | "char" | | not null |
typcategory | "char" | | not null |
typispreferred | boolean | | not null |
typisdefined | boolean | | not null |
typdelim | "char" | | not null |
typrelid | oid | | not null |
typsubscript | regproc | | not null |
typelem | oid | | not null |
typarray | oid | | not null |
typinput | regproc | | not null |
typoutput | regproc | | not null |
typreceive | regproc | | not null |
typsend | regproc | | not null |
typmodin | regproc | | not null |
typmodout | regproc | | not null |
typanalyze | regproc | | not null |
typalign | "char" | | not null |
typstorage | "char" | | not null |
typnotnull | boolean | | not null |
typbasetype | oid | | not null |
typtypmod | integer | | not null |
typndims | integer | | not null |
typcollation | oid | | not null |
typdefaultbin | pg_node_tree | C | |
typdefault | text | C | |
typacl | aclitem[] | | |
Indexes:
"pg_type_oid_index" PRIMARY KEY, btree (oid)
"pg_type_typname_nsp_index" UNIQUE CONSTRAINT, btree (typname, typnamespace)
Documentation: pg_type
pg_type (PostgreSQL 13)
Table "pg_catalog.pg_type"
Column | Type | Collation | Nullable | Default
----------------+--------------+-----------+----------+---------
oid | oid | | not null |
typname | name | | not null |
typnamespace | oid | | not null |
typowner | oid | | not null |
typlen | smallint | | not null |
typbyval | boolean | | not null |
typtype | "char" | | not null |
typcategory | "char" | | not null |
typispreferred | boolean | | not null |
typisdefined | boolean | | not null |
typdelim | "char" | | not null |
typrelid | oid | | not null |
typelem | oid | | not null |
typarray | oid | | not null |
typinput | regproc | | not null |
typoutput | regproc | | not null |
typreceive | regproc | | not null |
typsend | regproc | | not null |
typmodin | regproc | | not null |
typmodout | regproc | | not null |
typanalyze | regproc | | not null |
typalign | "char" | | not null |
typstorage | "char" | | not null |
typnotnull | boolean | | not null |
typbasetype | oid | | not null |
typtypmod | integer | | not null |
typndims | integer | | not null |
typcollation | oid | | not null |
typdefaultbin | pg_node_tree | C | |
typdefault | text | C | |
typacl | aclitem[] | | |
Indexes:
"pg_type_oid_index" UNIQUE, btree (oid)
"pg_type_typname_nsp_index" UNIQUE, btree (typname, typnamespace)
Documentation: pg_type
pg_type (PostgreSQL 12)
Table "pg_catalog.pg_type"
Column | Type | Collation | Nullable | Default
----------------+--------------+-----------+----------+---------
oid | oid | | not null |
typname | name | | not null |
typnamespace | oid | | not null |
typowner | oid | | not null |
typlen | smallint | | not null |
typbyval | boolean | | not null |
typtype | "char" | | not null |
typcategory | "char" | | not null |
typispreferred | boolean | | not null |
typisdefined | boolean | | not null |
typdelim | "char" | | not null |
typrelid | oid | | not null |
typelem | oid | | not null |
typarray | oid | | not null |
typinput | regproc | | not null |
typoutput | regproc | | not null |
typreceive | regproc | | not null |
typsend | regproc | | not null |
typmodin | regproc | | not null |
typmodout | regproc | | not null |
typanalyze | regproc | | not null |
typalign | "char" | | not null |
typstorage | "char" | | not null |
typnotnull | boolean | | not null |
typbasetype | oid | | not null |
typtypmod | integer | | not null |
typndims | integer | | not null |
typcollation | oid | | not null |
typdefaultbin | pg_node_tree | C | |
typdefault | text | C | |
typacl | aclitem[] | | |
Indexes:
"pg_type_oid_index" UNIQUE, btree (oid)
"pg_type_typname_nsp_index" UNIQUE, btree (typname, typnamespace)
Documentation: pg_type
pg_type (PostgreSQL 11)
Table "pg_catalog.pg_type"
Column | Type | Collation | Nullable | Default
----------------+--------------+-----------+----------+---------
typname | name | | not null |
typnamespace | oid | | not null |
typowner | oid | | not null |
typlen | smallint | | not null |
typbyval | boolean | | not null |
typtype | "char" | | not null |
typcategory | "char" | | not null |
typispreferred | boolean | | not null |
typisdefined | boolean | | not null |
typdelim | "char" | | not null |
typrelid | oid | | not null |
typelem | oid | | not null |
typarray | oid | | not null |
typinput | regproc | | not null |
typoutput | regproc | | not null |
typreceive | regproc | | not null |
typsend | regproc | | not null |
typmodin | regproc | | not null |
typmodout | regproc | | not null |
typanalyze | regproc | | not null |
typalign | "char" | | not null |
typstorage | "char" | | not null |
typnotnull | boolean | | not null |
typbasetype | oid | | not null |
typtypmod | integer | | not null |
typndims | integer | | not null |
typcollation | oid | | not null |
typdefaultbin | pg_node_tree | | |
typdefault | text | | |
typacl | aclitem[] | | |
Indexes:
"pg_type_oid_index" UNIQUE, btree (oid)
"pg_type_typname_nsp_index" UNIQUE, btree (typname, typnamespace)
Documentation: pg_type
pg_type (PostgreSQL 10)
Table "pg_catalog.pg_type"
Column | Type | Collation | Nullable | Default
----------------+--------------+-----------+----------+---------
typname | name | | not null |
typnamespace | oid | | not null |
typowner | oid | | not null |
typlen | smallint | | not null |
typbyval | boolean | | not null |
typtype | "char" | | not null |
typcategory | "char" | | not null |
typispreferred | boolean | | not null |
typisdefined | boolean | | not null |
typdelim | "char" | | not null |
typrelid | oid | | not null |
typelem | oid | | not null |
typarray | oid | | not null |
typinput | regproc | | not null |
typoutput | regproc | | not null |
typreceive | regproc | | not null |
typsend | regproc | | not null |
typmodin | regproc | | not null |
typmodout | regproc | | not null |
typanalyze | regproc | | not null |
typalign | "char" | | not null |
typstorage | "char" | | not null |
typnotnull | boolean | | not null |
typbasetype | oid | | not null |
typtypmod | integer | | not null |
typndims | integer | | not null |
typcollation | oid | | not null |
typdefaultbin | pg_node_tree | | |
typdefault | text | | |
typacl | aclitem[] | | |
Indexes:
"pg_type_oid_index" UNIQUE, btree (oid)
"pg_type_typname_nsp_index" UNIQUE, btree (typname, typnamespace)
Documentation: pg_type
pg_type (PostgreSQL 9.6)
Table "pg_catalog.pg_type"
Column | Type | Modifiers
----------------+--------------+-----------
typname | name | not null
typnamespace | oid | not null
typowner | oid | not null
typlen | smallint | not null
typbyval | boolean | not null
typtype | "char" | not null
typcategory | "char" | not null
typispreferred | boolean | not null
typisdefined | boolean | not null
typdelim | "char" | not null
typrelid | oid | not null
typelem | oid | not null
typarray | oid | not null
typinput | regproc | not null
typoutput | regproc | not null
typreceive | regproc | not null
typsend | regproc | not null
typmodin | regproc | not null
typmodout | regproc | not null
typanalyze | regproc | not null
typalign | "char" | not null
typstorage | "char" | not null
typnotnull | boolean | not null
typbasetype | oid | not null
typtypmod | integer | not null
typndims | integer | not null
typcollation | oid | not null
typdefaultbin | pg_node_tree |
typdefault | text |
typacl | aclitem[] |
Indexes:
"pg_type_oid_index" UNIQUE, btree (oid)
"pg_type_typname_nsp_index" UNIQUE, btree (typname, typnamespace)
Documentation: pg_type
pg_type (PostgreSQL 9.5)
Table "pg_catalog.pg_type"
Column | Type | Modifiers
----------------+--------------+-----------
typname | name | not null
typnamespace | oid | not null
typowner | oid | not null
typlen | smallint | not null
typbyval | boolean | not null
typtype | "char" | not null
typcategory | "char" | not null
typispreferred | boolean | not null
typisdefined | boolean | not null
typdelim | "char" | not null
typrelid | oid | not null
typelem | oid | not null
typarray | oid | not null
typinput | regproc | not null
typoutput | regproc | not null
typreceive | regproc | not null
typsend | regproc | not null
typmodin | regproc | not null
typmodout | regproc | not null
typanalyze | regproc | not null
typalign | "char" | not null
typstorage | "char" | not null
typnotnull | boolean | not null
typbasetype | oid | not null
typtypmod | integer | not null
typndims | integer | not null
typcollation | oid | not null
typdefaultbin | pg_node_tree |
typdefault | text |
typacl | aclitem[] |
Indexes:
"pg_type_oid_index" UNIQUE, btree (oid)
"pg_type_typname_nsp_index" UNIQUE, btree (typname, typnamespace)
Documentation: pg_type
pg_type (PostgreSQL 9.4)
Table "pg_catalog.pg_type"
Column | Type | Modifiers
----------------+--------------+-----------
typname | name | not null
typnamespace | oid | not null
typowner | oid | not null
typlen | smallint | not null
typbyval | boolean | not null
typtype | "char" | not null
typcategory | "char" | not null
typispreferred | boolean | not null
typisdefined | boolean | not null
typdelim | "char" | not null
typrelid | oid | not null
typelem | oid | not null
typarray | oid | not null
typinput | regproc | not null
typoutput | regproc | not null
typreceive | regproc | not null
typsend | regproc | not null
typmodin | regproc | not null
typmodout | regproc | not null
typanalyze | regproc | not null
typalign | "char" | not null
typstorage | "char" | not null
typnotnull | boolean | not null
typbasetype | oid | not null
typtypmod | integer | not null
typndims | integer | not null
typcollation | oid | not null
typdefaultbin | pg_node_tree |
typdefault | text |
typacl | aclitem[] |
Indexes:
"pg_type_oid_index" UNIQUE, btree (oid)
"pg_type_typname_nsp_index" UNIQUE, btree (typname, typnamespace)
Documentation: pg_type
pg_type (PostgreSQL 9.3)
Table "pg_catalog.pg_type"
Column | Type | Modifiers
----------------+--------------+-----------
typname | name | not null
typnamespace | oid | not null
typowner | oid | not null
typlen | smallint | not null
typbyval | boolean | not null
typtype | "char" | not null
typcategory | "char" | not null
typispreferred | boolean | not null
typisdefined | boolean | not null
typdelim | "char" | not null
typrelid | oid | not null
typelem | oid | not null
typarray | oid | not null
typinput | regproc | not null
typoutput | regproc | not null
typreceive | regproc | not null
typsend | regproc | not null
typmodin | regproc | not null
typmodout | regproc | not null
typanalyze | regproc | not null
typalign | "char" | not null
typstorage | "char" | not null
typnotnull | boolean | not null
typbasetype | oid | not null
typtypmod | integer | not null
typndims | integer | not null
typcollation | oid | not null
typdefaultbin | pg_node_tree |
typdefault | text |
typacl | aclitem[] |
Indexes:
"pg_type_oid_index" UNIQUE, btree (oid)
"pg_type_typname_nsp_index" UNIQUE, btree (typname, typnamespace)
Documentation: pg_type
pg_type (PostgreSQL 9.2)
Table "pg_catalog.pg_type"
Column | Type | Modifiers
----------------+--------------+-----------
typname | name | not null
typnamespace | oid | not null
typowner | oid | not null
typlen | smallint | not null
typbyval | boolean | not null
typtype | "char" | not null
typcategory | "char" | not null
typispreferred | boolean | not null
typisdefined | boolean | not null
typdelim | "char" | not null
typrelid | oid | not null
typelem | oid | not null
typarray | oid | not null
typinput | regproc | not null
typoutput | regproc | not null
typreceive | regproc | not null
typsend | regproc | not null
typmodin | regproc | not null
typmodout | regproc | not null
typanalyze | regproc | not null
typalign | "char" | not null
typstorage | "char" | not null
typnotnull | boolean | not null
typbasetype | oid | not null
typtypmod | integer | not null
typndims | integer | not null
typcollation | oid | not null
typdefaultbin | pg_node_tree |
typdefault | text |
typacl | aclitem[] |
Indexes:
"pg_type_oid_index" UNIQUE, btree (oid)
"pg_type_typname_nsp_index" UNIQUE, btree (typname, typnamespace)
Documentation: pg_type
pg_type (PostgreSQL 9.1)
Table "pg_catalog.pg_type"
Column | Type | Modifiers
----------------+--------------+-----------
typname | name | not null
typnamespace | oid | not null
typowner | oid | not null
typlen | smallint | not null
typbyval | boolean | not null
typtype | "char" | not null
typcategory | "char" | not null
typispreferred | boolean | not null
typisdefined | boolean | not null
typdelim | "char" | not null
typrelid | oid | not null
typelem | oid | not null
typarray | oid | not null
typinput | regproc | not null
typoutput | regproc | not null
typreceive | regproc | not null
typsend | regproc | not null
typmodin | regproc | not null
typmodout | regproc | not null
typanalyze | regproc | not null
typalign | "char" | not null
typstorage | "char" | not null
typnotnull | boolean | not null
typbasetype | oid | not null
typtypmod | integer | not null
typndims | integer | not null
typcollation | oid | not null
typdefaultbin | pg_node_tree |
typdefault | text |
Indexes:
"pg_type_oid_index" UNIQUE, btree (oid)
"pg_type_typname_nsp_index" UNIQUE, btree (typname, typnamespace)
Documentation: pg_type
pg_type (PostgreSQL 9.0)
Table "pg_catalog.pg_type"
Column | Type | Modifiers
----------------+----------+-----------
typname | name | not null
typnamespace | oid | not null
typowner | oid | not null
typlen | smallint | not null
typbyval | boolean | not null
typtype | "char" | not null
typcategory | "char" | not null
typispreferred | boolean | not null
typisdefined | boolean | not null
typdelim | "char" | not null
typrelid | oid | not null
typelem | oid | not null
typarray | oid | not null
typinput | regproc | not null
typoutput | regproc | not null
typreceive | regproc | not null
typsend | regproc | not null
typmodin | regproc | not null
typmodout | regproc | not null
typanalyze | regproc | not null
typalign | "char" | not null
typstorage | "char" | not null
typnotnull | boolean | not null
typbasetype | oid | not null
typtypmod | integer | not null
typndims | integer | not null
typdefaultbin | text |
typdefault | text |
Indexes:
"pg_type_oid_index" UNIQUE, btree (oid)
"pg_type_typname_nsp_index" UNIQUE, btree (typname, typnamespace)
Documentation: pg_type
pg_type (PostgreSQL 8.4)
Table "pg_catalog.pg_type"
Column | Type | Modifiers
----------------+----------+-----------
typname | name | not null
typnamespace | oid | not null
typowner | oid | not null
typlen | smallint | not null
typbyval | boolean | not null
typtype | "char" | not null
typcategory | "char" | not null
typispreferred | boolean | not null
typisdefined | boolean | not null
typdelim | "char" | not null
typrelid | oid | not null
typelem | oid | not null
typarray | oid | not null
typinput | regproc | not null
typoutput | regproc | not null
typreceive | regproc | not null
typsend | regproc | not null
typmodin | regproc | not null
typmodout | regproc | not null
typanalyze | regproc | not null
typalign | "char" | not null
typstorage | "char" | not null
typnotnull | boolean | not null
typbasetype | oid | not null
typtypmod | integer | not null
typndims | integer | not null
typdefaultbin | text |
typdefault | text |
Indexes:
"pg_type_oid_index" UNIQUE, btree (oid)
"pg_type_typname_nsp_index" UNIQUE, btree (typname, typnamespace)
Documentation: pg_type
pg_type (PostgreSQL 8.3)
Table "pg_catalog.pg_type"
Column | Type | Modifiers
---------------+----------+-----------
typname | name | not null
typnamespace | oid | not null
typowner | oid | not null
typlen | smallint | not null
typbyval | boolean | not null
typtype | "char" | not null
typisdefined | boolean | not null
typdelim | "char" | not null
typrelid | oid | not null
typelem | oid | not null
typarray | oid | not null
typinput | regproc | not null
typoutput | regproc | not null
typreceive | regproc | not null
typsend | regproc | not null
typmodin | regproc | not null
typmodout | regproc | not null
typanalyze | regproc | not null
typalign | "char" | not null
typstorage | "char" | not null
typnotnull | boolean | not null
typbasetype | oid | not null
typtypmod | integer | not null
typndims | integer | not null
typdefaultbin | text |
typdefault | text |
Indexes:
"pg_type_oid_index" UNIQUE, btree (oid)
"pg_type_typname_nsp_index" UNIQUE, btree (typname, typnamespace)
Documentation: pg_type
pg_type (PostgreSQL 8.2)
Table "pg_catalog.pg_type"
Column | Type | Modifiers
---------------+----------+-----------
typname | name | not null
typnamespace | oid | not null
typowner | oid | not null
typlen | smallint | not null
typbyval | boolean | not null
typtype | "char" | not null
typisdefined | boolean | not null
typdelim | "char" | not null
typrelid | oid | not null
typelem | oid | not null
typinput | regproc | not null
typoutput | regproc | not null
typreceive | regproc | not null
typsend | regproc | not null
typanalyze | regproc | not null
typalign | "char" | not null
typstorage | "char" | not null
typnotnull | boolean | not null
typbasetype | oid | not null
typtypmod | integer | not null
typndims | integer | not null
typdefaultbin | text |
typdefault | text |
Indexes:
"pg_type_oid_index" UNIQUE, btree (oid)
"pg_type_typname_nsp_index" UNIQUE, btree (typname, typnamespace)
Documentation: pg_type
Change history
Work-in-progress
- PostgreSQL 14
- PostgreSQL 7.3
- following columns removed (commit 739adf32):
typprtlentypreceivetypsend
- following columns removed (commit 739adf32):
Source code
Between PostgreSQL 8.4 (commit 039dfbfd) and PostgreSQL 11 (commit cefa3871), an additional source file src/include/catalog/pg_type_fn.h existed to enable catalogue definitions to be included by frontend code.
References
- PostgreSQL documentation: pg_type