sql server->插入到作为主键的单个值中，并将Identity（）插入另一个表的列中

Question

I wanna insert a records from a column which has a primary key and Is Identity property to another column of another table . For example,

I have a table called 'STU' with the following columns:

• SNO (Primary Key, and Identity [ie autoincrementing])
• NAME (not null)
• CLASS (not null)
• SECTION (not null)

I have a table called 'MARK' with the following columns:

• MSNO (Foreign Key reference STU (SNO))
• M1 (not null)
• M2 (not null)

• M3 (not null)

   CREATE TABLE STU (SNO INT CONSTRAINT PK_SNO PRIMARY KEY (SNO), NAME VARCHAR(25), CLASS VARCHAR(20), SECTION CHAR ); CREATE TABLE MARK(MSNO INT CONSTRAINT FK_MSNO FOREIGN KEY (MSNO) REFERENCES STU(SNO), M1 INT, M2 INT, M3 INT); 

As the title says I am trying to insert into 1 table selecting values from other table.

INSERT INTO MARK (MSNO, M1, M2, M3) SELECT SNO FROM STU WHERE SNO = '%', '100','100','100';

INSERT INTO MARK (MSNO, M1, M2, M3) SELECT SNO FROM STU WHERE SNO = '%' values ('100','100','100');

Both these insert query is throwing error

Answer 1

INSERT INTO MARK (MSNO, M1, M2, M3)
SELECT SNO FROM STU WHERE SNO = '%' values ('100','100','100');

I think your intent is:

INSERT INTO MARK (MSNO, M1, M2, M3)
SELECT SNO, '100', '100', '100' FROM STU WHERE SNO = '%'

The SELECT statement describes the data to be inserted. It needs to be a valid SELECT statement. Appending VALUES won't achieve that.

If you need to visualise what you're going to insert before you insert it, simply run the SELECT query first.