Can AppMaker be used with SQL Server - sql-server

Question

I understand AppMaker can be used with PostgreSQL and MySQL but the documentation says you can use your own data source. This is a bit ambiguous and I am trying to find out specifically if I can use an existing SQL Server database. I've spoken with Google's support team but they were unable to answer and directed me to ask a question here. Thanks in advance :-)

Answer 1

Quick answer is yes but Cloud SQL is easier and works better.
Long answer:
App Maker does support SQL using REST and JDBC however it is much harder than using their own CloudSQL model. some code for JDBC from when i last used it:
function get_data() {
var queryStr = 'SELECT * FROM users'; //SQL query
var calcRecords = []; //empty array to put records into
var connection = Jdbc.getConnection(dbUrl, user, userPwd); //connect to database
var statement = connection.prepareStatement(queryStr); //prepared statement
var results = statement.executeQuery(); //execute prepared query
try {
while (results.next()) {
var calcRecord = app.models.test.newRecord();
calcRecord.id = results.getInt(1); //data source test row id
calcRecord.user = results.getString(2); //data source test row user
calcRecord.passwd = results.getString(3); //data source test row passwd
calcRecords.push(calcRecord); //append to 2D array
}
results.close(); //close the results
statement.close(); //close the connection
} catch (err) {
console.error('SQL query failed: ' + err);
}
return calcRecords;
}
The equivalent Google Cloud SQL:
function get_users(){
var ds=app.datasource.Users.Items;
var data = [];
for(var i = 0; i < Items.length; i++){
tmp = [];
tmp.push(Items[i].id); //the id
tmp.push(Items[i].user); //the username
tmp.push(Items[i].password); //the password
data.push(tmp); //push to create 2D array
}
return data;
}
Doing query is a little harder and requires server code (so async callbacks), but populating Widgets like dropdown and implementing tables is a lot easier, usually requiring a couple of clicks rather than a lot of code.