Wiki / 存储参数

Specifies the attribute type of chunk_id to use when creating a TOAST relation for this table. The default is oid ; oid8 assigns oid8 instead, which allows a larger number of distinct TOAST ed values at the price of four extra bytes per out-of-line pointer. This parameter cannot be set for TOAST tables. The value is only consulted when the TOAST relation is created. Changing it afterwards has no effect on an existing TOAST relation, and a table rewrite such as CLUSTER , REPACK or VACUUM FULL preserves the type already in use. A dump and restore, on the other hand, recreates the TOAST relation and therefore applies the current value of this parameter.

此版本暂无所选语言的定义，以下显示原始英文内容。

Applies to

Tables and materialized views

Value type

enum

signature

WITH (toast_value_type = value)