Oracle 视图 DBA_STREAMS_DELETE_COLUMN 官方解释,作用,如何使用详细说明

本站中文解释

_STATISTICS字典视图

Oracle视图DBA_STREAMS_DELETE_COLUMN_STATISTICS字典视图是查看通过strms_view_adm.delete_table_column_stats函数删除表列统计信息的视图。该视图包含以下4个列:SCHEMA_NAME(用于存储模式名称)、TABLE_NAME(用于存储表名称)、COLUMN_NAME(用于存储列名称)、STAT_TIME(用于存储从表中删除统计信息的时间)。

使用Oracle视图DBA_STREAMS_DELETE_COLUMN_STATISTICS字典视图可以查看strms_view_adm.delete_table_column_stats函数删除的表列统计信息,以此来确定删除的表列的模式名称、表名称和列名称。此外,使用该视图也可以查看从表中删除统计信息的时间。

官方英文解释

DBA_STREAMS_DELETE_COLUMN displays information about declarative rule-based transformations that delete a column from a row logical change record (LCR).

Column Datatype NULL Description

RULE_OWNER

VARCHAR2(128)

Owner of the rule

RULE_NAME

VARCHAR2(128)

Name of the rule

SCHEMA_NAME

VARCHAR2(128)

Schema of the column to be deleted

TABLE_NAME

VARCHAR2(128)

Table of the column to be deleted

COLUMN_NAME

VARCHAR2(4000)

Name of the column to delete

VALUE_TYPE

VARCHAR2(3)

Indicates whether to modify the old (OLD), new (NEW), or both (*) values of the LCR

PRECEDENCE

NUMBER

1 (the execution order relative to other transformations on the same STEP_NUMBER; the smaller number will be executed first)

STEP_NUMBER

NUMBER

Order in which this transformation should be executed


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