我們如何識別兩個SQL Server表之間的關系，一對一或其他關系......？

Question

我們如何識別兩個SQL Server表之間的關系，一對一或其他一些關系.....？

Answer 1

在SQL Server中，在數據庫中創建一個新視圖，添加要查看其關系的兩個表。

Answer 2

如果您想檢查所有表連接到表的內容，只需右鍵單擊表並轉到查看依賴項

並找出答案。 您可以通過檢查該表的創建查詢來檢查所有約束。

我認為它會幫助你。 謝謝

Answer 3

您可以使用Microsoft系統視圖來實現此目的：

SELECT  
    obj.name AS fk
    ,sch.name AS [schema_name]
    ,tabParent.name AS [table]
    ,colParent.name AS [column]
    ,tabRef.name AS [referenced_table]
    ,colRef.name AS [referenced_column]
FROM sys.foreign_key_columns fkc
JOIN sys.objects obj ON obj.object_id = fkc.constraint_object_id
JOIN sys.tables tabParent ON tabParent.object_id = fkc.parent_object_id
JOIN sys.schemas sch ON tabParent.schema_id = sch.schema_id
JOIN sys.columns colParent ON colParent.column_id = parent_column_id AND colParent.object_id = tabParent.object_id
JOIN sys.tables tabRef ON tabRef.object_id = fkc.referenced_object_id
JOIN sys.columns colRef ON colRef.column_id = referenced_column_id AND colRef.object_id = tabRef.object_id
JOIN sys.schemas schRef ON tabRef.schema_id = schRef.schema_id
WHERE schRef.name = N'dbo'
AND tabRef.name = N'Projects'

可以通過引用的表或列過濾此查詢，或者僅查找引用特定列的所有內容。