Cách tạo tập lệnh để tạo lại các ràng buộc khóa ngoại trong cơ sở dữ liệu SQL Server - Hướng dẫn sử dụng SQL Server / TSQL Phần 73

Tình huống:

Select 'Truncate table '+'['
+Schema_name(Schema_id)
+'].['+name+']' as TruncateTablesScript
from sys.tables
where is_ms_shipped=0

;With CTE_FK AS (
SELECT Schema_Name(Schema_id) as TableSchemaName,
  object_name(FK.parent_object_id) ParentTableName,
  object_name(FK.referenced_object_id) ReferenceTableName,
  FK.name AS ForeignKeyConstraintName,c.name as RefColumnName,
  cf.name as ParentColumnList
       FROM sys.foreign_keys AS FK
       INNER JOIN sys.foreign_key_columns AS FKC
               ON FK.OBJECT_ID = FKC.constraint_object_id
               INNER JOIN sys.columns c
          on  c.OBJECT_ID = FKC.referenced_object_id
                 AND c.column_id = FKC.referenced_column_id
                 INNER JOIN sys.columns cf
          on  cf.OBJECT_ID = FKC.parent_object_id
                 AND cf.column_id = FKC.parent_column_id
                 where fk.is_ms_shipped=0
                 )
                 Select 
                 'Alter table ['+TableSchemaName+'].['+ParentTableName+']' 
                 +' Add Constraint '+ForeignKeyConstraintName+ 
                 ' Foreign Key('+stuff((
                 Select ','+ParentColumnList
                 from CTE_FK i
                 where i.ForeignKeyConstraintName=o.ForeignKeyConstraintName
                 and i.TableSchemaName=o.TableSchemaName
                 and i.ParentTableName=o.ParentTableName
                 and i.ReferenceTableName=o.ReferenceTableName
                 for xml path('')), 1, 1, '')+') References '+
                 '['+TableSchemaName+'].['+ReferenceTableName+']('+stuff((
                 Select ','+RefColumnName
                 from CTE_FK i
                 where i.ForeignKeyConstraintName=o.ForeignKeyConstraintName
                 and i.TableSchemaName=o.TableSchemaName
                 and i.ParentTableName=o.ParentTableName
                 and i.ReferenceTableName=o.ReferenceTableName
                 for xml path('')), 1, 1, '')+')'
                 AS CreateForeignKeyConstraintScript,
                 ParentTableName,
                 ReferenceTableName,
                 ForeignKeyConstraintName
                 from CTE_FK o
                 group by 
                 tableSchemaName,
                 ParentTableName,
                 ReferenceTableName,
                 ForeignKeyConstraintName

Cách tạo tập lệnh để tạo lại Ràng buộc khóa ngoại trong Cơ sở dữ liệu SQL Server