Wiki / OID 类型

PostgreSQL 版本定义：18

• cidTransaction and row identifiers10 – 20

  A third identifier type used by the system is cid , or command identifier. This is the data type of the system columns cmin and cmax . Command identifiers are also 32-bit quantities.

  此定义以英文显示

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• oidObject identifiers10 – 20

  numeric object identifier.

  此定义以英文显示

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• regclassObject name aliases10 – 20

  relation name.

  此定义以英文显示

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• regcollationObject name aliases13 – 20

  collation name.

  此定义以英文显示

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• regconfigObject name aliases10 – 20

  text search configuration.

  此定义以英文显示

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• regdictionaryObject name aliases10 – 20

  text search dictionary.

  此定义以英文显示

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• regnamespaceObject name aliases10 – 20

  namespace name.

  此定义以英文显示

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• regoperObject name aliases10 – 20

  operator name.

  此定义以英文显示

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• regoperatorObject name aliases10 – 20

  operator with argument types.

  此定义以英文显示

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• regprocObject name aliases10 – 20

  function name.

  此定义以英文显示

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• regprocedureObject name aliases10 – 20

  function with argument types.

  此定义以英文显示

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• regroleObject name aliases10 – 20

  role name.

  此定义以英文显示

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• regtypeObject name aliases10 – 20

  data type name.

  此定义以英文显示

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• tidTransaction and row identifiers10 – 20

  A final identifier type used by the system is tid , or tuple identifier (row identifier). This is the data type of the system column ctid . A tuple ID is a pair (block number, tuple index within block) that identifies the physical location of the row within its table.

  此定义以英文显示

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• xidTransaction and row identifiers10 – 20

  Another identifier type used by the system is xid , or transaction (abbreviated xact ) identifier. This is the data type of the system columns xmin and xmax . Transaction identifiers are 32-bit quantities. In some contexts, a 64-bit variant xid8 is used. Unlike xid values, xid8 values increase strictly monotonically and cannot be reused in the lifetime of a database cluster. See Section 67.1 for more details.

  此定义以英文显示

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• xid8Transaction and row identifiers13 – 20

  Another identifier type used by the system is xid , or transaction (abbreviated xact ) identifier. This is the data type of the system columns xmin and xmax . Transaction identifiers are 32-bit quantities. In some contexts, a 64-bit variant xid8 is used. Unlike xid values, xid8 values increase strictly monotonically and cannot be reused in the lifetime of a database cluster. See Section 67.1 for more details.

  此定义以英文显示

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