Oracle 视图 ALL_EDITIONING_VIEW_COLS 官方解释,作用,如何使用详细说明
本站中文解释
ALL_EDITIONING_VIEW_COLS视图描述了做版本控制的视图中每个字段的版本属性,该视图位于SYS和SYSTEM用户下,主要用于Oracle版本控制。
在使用ALL_EDITIONING_VIEW_COLS视图时,需要指定表名和列名,以查询某个表的某个列的版本属性信息。该视图的返回结果包括列名、列长、数据类型、是否是PK列、是否可以空,以及与版本相关的数据,如版本可读字段、版本可写字段、视图版本字段以及垃圾收集字段等。
它的使用方法如下:
SQL> select column_name,version_read,version_write,version_column_name,gc_column_name
from all_editioning_view_cols
where view_name=’MY_VIEW’;
其中,view_name=’MY_VIEW’是指查询指定视图名,而column_name,version_read,version_write,version_column_name,gc_column_name则是查询出每个字段的版本特性,比如可读版本、可写版本等。
官方英文解释
ALL_EDITIONING_VIEW_COLS
describes the relationship between the columns of the editioning views accessible to the current user and the table columns to which they map.
Related Views
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DBA_EDITIONING_VIEW_COLS
describes the relationship between the columns of all editioning views in the database and the table columns to which they map. -
USER_EDITIONING_VIEW_COLS
describes the relationship between the columns of the editioning views owned by the current user and the table columns to which they map. This view does not display theOWNER
column.
Column | Datatype | NULL | Description |
---|---|---|---|
|
|
|
Owner of an editioning view |
|
|
|
Name of an editioning view |
|
|
|
Column number within the editioning view |
|
|
|
Name of the column in the editioning view |
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|
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Column number of a table column to which this editioning view column maps |
|
|
|
Name of a table column to which this editioning view column maps |
See Also:
-
“DBA_EDITIONING_VIEW_COLS”
-
“USER_EDITIONING_VIEW_COLS”