Error: table data has 1 columns but 3 values were supplied Unable to execute statement - sql

Question

I'm testing this simple database program using a QML project:
Window {
visible: true
width: 640; height: 480
title: qsTr("SQL Example")
property var db
property int ident: 0
TextField {
id: field
placeholderText: qsTr("Enter Your Name")
hoverEnabled: true
}
Button {
text: "Next"
anchors.top: field.bottom
onClicked: storeData(field.displayText)
}
Component.onCompleted: initDatabase()
function initDatabase() {
db = LocalStorage.openDatabaseSync("data", "1.0", "Save names", 1000000)
db.transaction( function(tx)
{ tx.executeSql('CREATE TABLE IF NOT EXISTS data (id INTEGER, name TEXT, mode TEXT)') })
}
function storeData(username) {
db.transaction( function(tx) {
tx.executeSql('INSERT INTO data VALUES (?, ?, ?)', [ident, username, ""])
ident++ })
}
}
When I hit the Next button, after entering a name, I get this error message:
qrc:/main.qml:36: Error: table data has 1 columns but 3 values were supplied Unable to execute statement
Seemingly everything is right but I don't know why I get this error!

Answer 1

The query that you have.
INSERT INTO data VALUES (?, ?, ?)
The query that must be used as a better practice
INSERT INTO data (col1, col2, col3) VALUES (?, ?, ?)
Thing to note
Check if the table is already present in the database. That may be the reason why the create table statement is not executing with three column definition. If so remove the table and execute the code it will work.