IncludeRelatedTables

IncludeRelatedTables

是 RelationalDatabase 的一个选项，指定是否包含外键指定的表格.

更多信息

  • 在 RelationalDatabase[DatabaseReference[…]] 这种形式中，该选项不起作用. 但在 RelationalDatabase[{"table1","table2",…},…] 形式中，该选项的值确定是否只包括表格 tablei.
  • 如果采用默认设置 IncludeRelatedTablesFalse，只检查指定的表格并将其包含在 RelationalDatabase 对象中.
  • 如果采用设置 IncludeRelatedTablesTrue，则需递归式包含外键约束条件中指代的所有表格，即使它们没有出现在 RelationalDatabase 的第一个参数中.

范例

基本范例  (1)

如果采用默认设置，只包含所选的表格：

将 IncludeRelatedTables 设为 True，遵循外键约束条件：

Wolfram Research (2019)，IncludeRelatedTables，Wolfram 语言函数，https://reference.wolfram.com/language/ref/IncludeRelatedTables.html.

文本

Wolfram Research (2019)，IncludeRelatedTables，Wolfram 语言函数，https://reference.wolfram.com/language/ref/IncludeRelatedTables.html.

CMS

Wolfram 语言. 2019. "IncludeRelatedTables." Wolfram 语言与系统参考资料中心. Wolfram Research. https://reference.wolfram.com/language/ref/IncludeRelatedTables.html.

APA

Wolfram 语言. (2019). IncludeRelatedTables. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/ref/IncludeRelatedTables.html 年

BibTeX

@misc{reference.wolfram_2024_includerelatedtables, author="Wolfram Research", title="{IncludeRelatedTables}", year="2019", howpublished="\url{https://reference.wolfram.com/language/ref/IncludeRelatedTables.html}", note=[Accessed: 22-November-2024 ]}

BibLaTeX

@online{reference.wolfram_2024_includerelatedtables, organization={Wolfram Research}, title={IncludeRelatedTables}, year={2019}, url={https://reference.wolfram.com/language/ref/IncludeRelatedTables.html}, note=[Accessed: 22-November-2024 ]}