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单词
column constraint
释义
column constraint
美
英
un.
列约束
网络
用来定义列级的约束条件;栏限制
英汉
网络释义
un.
1.
列约束
1.
列约束
列约束
(
COLUMN CONSTRAINT
)作为列定义的一部分只作用于此列本事。表约束(Table Constraint)作为表定义的一部分…
blog.libears.com
2.
用来定义列级的约束条件
Oracle数据库中表与视图的应用... ...
COLUMN CONSTRAINT
:
用来定义列级的约束条件
。 TABLE CONSTRAINT: 用来定 …
dev.yesky.com
3.
栏限制
其实,限制的语法有2种:「
栏限制
」(
Column Constraint
) 和 「表格限制」(Table Constraint) 。ON DELETE SET NULL ON …
www.ixdba.net
例句
释义:
列约束,用来定义列级的约束条件,栏限制
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更新时间:2025/8/24 16:32:37