Modifying Data
The following code examples show how to use data modification statements.
Procedure for Updates
You can use separate statements to execute data modification statements. Once you create the statement, you can call its executeNonQueryMethod and retrieve the number of affected rows.
INSERT
To insert updates:
db.open("...", (err) => { db.prepare("INSERT INTO Customers (Name) VALUES ('Hook, Captain')", (err, stmt) => { stmt.executeNonQuery((err, affected) => { console.log("Affected: " + affected); }); }); });
UPDATE
To retrieve updates:
db.open("...", (err) => { db.prepare("UPDATE Customers SET Name = 'Hook, Captain' WHERE Id = 'Cook, Brian'", (err, stmt) => { stmt.executeNonQuery((err, affected) => { console.log("Affected: " + affected); }); }); });
DELETE
To delete updates:
db.open("...", (err) => { db.prepare("DELETE FROM Customers WHERE Id = '10456255-0015501366'", (err, stmt) => { stmt.executeNonQuery((err, affected) => { console.log("Affected: " + affected); }); }); });