Question

 CREATE TABLE tbl1 as [departments]
 (
   deptId int identity primary key,
   deptName nvarchar(40)
 )

 CREATE TABLE tbl2 as [teachers]
 (
   teacherId int identity primary key,
   teacherName nvarchar(40),
   deptId int references departments
 )

CREATE TABLE tbl3 as [departmentChiefs]
(
  deptId int references departments,
  teacherId int references teachers,
  chiefDate date
)

我想将（departments）表的主键插入（教师）表的外键中，同时将（部门和教师）的主键插入部门外键中

Answer 1

试试这个：

DECLARE @DeptId INT, @TeacherId INT;

INSERT INTO departments (deptName) VALUES ('My Department');
SELECT @DeptId = SCOPE_IDENTITY();

INSERT INTO teachers (teacherName, deptId) VALUES ('Joe Smith', @DeptId);
SELECT @TeacherId = SCOPE_IDENTITY();

INSERT INTO departmentChiefs (deptId, teacherId, chiefDate) VALUES (@DeptId, @TeacherId, GETDATE());

SCOPE_IDENTITY返回当前作用域中插入的最新标识值，结果可用作另一个INSERT语句的输入。您可能还希望在使用之前进行一些错误检查（例如，确保它不是NULL。）

将tbl1的主键插入到tbl2的外键中，将tbl1，tbl2的主键插入到tbl3的外键中

1 个答案: