INSERT INTO table that contains foreign key

Question

I'm trying to insert values into a table called Division and it has a foreign key called id_dep from the table Departement . The problem is that I couldn't insert values into the Division table because of the foreign key. I searched the internet and found that I can't insert values into a foreign key directly but through a Select . I made some changes and my command looks like this:

string req = "INSERT INTO DIVISION VALUES(SELECT id_dep FROM Departement WHERE libelle='"+dep+"','" + id + "','" + lib + "')";

Now I'm getting a problem about syntax error. How to resolve that?

Answer 1

Use INSERT INTO...SELECT syntax,

INSERT INTO DIVISION (colName, colName2, colName3)
SELECT id_dep, @id, @lib
FROM Departement
WHERE libelle = @dep

Always parameterized the query to avoid sql injection.