Oracle 视图 ALL_TAB_IDENTITY_COLS 官方解释,作用,如何使用详细说明
本站中文解释
ALL_TAB_IDENTITY_COLS是Oracle的系统视图,它显示当前用户可见的所有表的身份列(IDENTITY columns)信息,用户可以通过这个视图来检查表是否存在身份列,如果存在,可以查看其列类型、列名、设定的SEED和步长,以及其他一些对列属性的定义,以便获取到更多有用信息。
使用All_Tab_Identity_Cols 视图,可以通过SQL语句来实现:
SELECT OWNER, TABLE_NAME, COLUMN_NAME FROM ALL_TAB_IDENTITY_COLS WHERE OWNER = ‘SCHEMA USERNAME’;
这条语句会返回给定schema用户拥有的所有表包含了身份列(IDENTITY)的相关信息。
官方英文解释
ALL_TAB_IDENTITY_COLS
describes all table identity columns.
Related Views
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DBA_TAB_IDENTITY_COLS
describes all table identity columns. -
USER_TAB_IDENTITY_COLS
describes all table identity columns. This view does not display theOWNER
column.
Column | Datatype | NULL | Description |
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Owner of the table |
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Name of the table |
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Name of the identity column |
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Generation type of the identity column. Possible values are |
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Name of the sequence associated with the identity column |
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Options for the identity column sequence generator |
See Also:
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“DBA_TAB_IDENTITY_COLS”
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“USER_TAB_IDENTITY_COLS”
See Also:
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The ALTER TABLE statement in Oracle Database SQL
Language Reference for more information about creating an identity column -
The CREATE TABLE statements in Oracle Database SQL
Language Reference for more information about creating an identity column