Question

Hey, I’m used to ORM so I have huge absence of sql experience. I want to know what is the best way to insert a row into a table, that is in many-to-many relationship with another table, and within the one statement also insert a row of two foreign keys into the particular linking table to preserve data integrity.

If anybody is using spring jdbcTemplate, I’d also want to know whether it has a support for this task. Thanks in advance

Answer 1

That’s typically what stored procedures are used for, eg something like

CREATE PROC MyInsertM2M(@fieldname1 int, @fieldname2 varchar(20), @Key1 int, @Key2 int etc)
AS
BEGIN

INSERT INTO MyMainTable(fieldname1, fieldname2...)
VALUES(@fieldname1, @fieldname2...)

INSERT INTO MyResolverTable(KeyField1, Keyfield2)
VALUES (@Key1, Key2)

END

(assuming sql server)

Then google BEGIN TRAN, COMMIT TRAN and ROLLBACK.