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附表->父表 #454

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Jan 25, 2025
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附表->父表 #454

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2 changes: 1 addition & 1 deletion postgresql/doc/src/sgml/ddl.sgml
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Expand Up @@ -6200,7 +6200,7 @@ ____________________________________________________________________________-->
</para>
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<para>
继承的查询仅在附表上执行访问权限检查。例如，在<structname>cities</structname>表上授予<literal>UPDATE</literal>权限也隐含着通过<structname>cities</structname>访问时在<structname>capitals</structname>表中更新行的权限。
继承的查询仅在父表上执行访问权限检查。例如，在<structname>cities</structname>表上授予<literal>UPDATE</literal>权限也隐含着通过<structname>cities</structname>访问时在<structname>capitals</structname>表中更新行的权限。
这保留了数据（也）在父表中的样子。但是如果没有额外的授权，则不能直接更新<structname>capitals</structname>表。
以类似的方式，父表的行安全性策略（见<xref linkend="ddl-rowsecurity"/>）适用于继承查询期间来自于子表的行。
只有当子表在查询中被明确提到时，其策略（如果有）才会被应用，在那种情况下，附着在其父表上的任何策略都会被忽略。
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