pg_inherits

字段

PostgreSQL 18 的 4 个字段，按定义顺序排列。说明默认用本站手册的译文，没有译文的按英文原文显示。

演化历史

相邻两个大版本之间的差异，新的在前。版本号链到该版的字段表。

1. PostgreSQL 14 ← 13 结构变更

   +inhdetachpending

2. PostgreSQL 13 ← 12 仅描述更新

   1 处描述更新

   • inhseqno If there is more than one direct parent for a child table (multiple inheritance), this number tells the order in which the inherited columns are to be arranged. The count starts at 1. Indexes can not have multiple inheritance, since they can only inherit when using declarative partitioning. If there is more than one direct parent for a child table (multiple inheritance), this number tells the order in which the inherited columns are to be arranged. The count starts at 1. Indexes cannot have multiple inheritance, since they can only inherit when using declarative partitioning.

3. PostgreSQL 11 ← 10 仅描述更新

   关系说明更新

   3 处描述更新

   • inhparent The OID of the parent table The OID of the parent table or index
   • inhrelid The OID of the child table The OID of the child table or index
   • inhseqno If there is more than one direct parent for a child table (multiple inheritance), this number tells the order in which the inherited columns are to be arranged. The count starts at 1. If there is more than one direct parent for a child table (multiple inheritance), this number tells the order in which the inherited columns are to be arranged. The count starts at 1. Indexes can not have multiple inheritance, since they can only inherit when using declarative partitioning.

字段矩阵

每个字段在 18 个收录版本里的存在情况；方格指向该版的字段表。「有变」指类型、可空、隐式或数组维数与上一版不同。

存在 有变 已移除 不存在

系统列

同类关系