Automatically update my Gsheet with an SQL data base - sql

Question

I need to update a file automatically that already has data in it.
The document is filled with an SQL data base thanks to the code below
However, I want it to update itself everyday without deleting any data that are already in the document and only adding new ones (don't want any duplicates).
function readData(db, queryString) {
//connect to the database
var server = 'your-servername-OR-serverPublicIpAddress';
var username = 'your-sql-username';
var password = 'your-password';
var dbUrl = 'jdbc:sqlserver://' + server + ':1433;databaseName=' + db;
var conn = Jdbc.getConnection(dbUrl, username, password );
//query the data
var stmt = conn.createStatement();
var exec_query = stmt.executeQuery(queryString);
var metaData = exec_query.getMetaData();
var numCols = metaData.getColumnCount();
//save query data to an array
var result=[]; //initiate a blank array
//save the column header
header = []; //initiate the header row
for (var col = 0; col < numCols; col++) {
header.push(metaData.getColumnName(col + 1)); //add the name of each column to the header row
};
result.push(header);//after the header row is formed, put it to the result array
//save the data of each row
while (exec_query.next()) {
row_data = [];
for (var col = 0; col < numCols; col++) {
row_data.push(exec_query.getString(col + 1));//add data of each column to the row data
//Logger.log(row_data);
};
result.push(row_data); // add row data to result
//Logger.log(result);
};
exec_query.close();
return result
};
function pushDataToGoogleSheet(data, SheetName) {
var spreadsheet = SpreadsheetApp.getActiveSpreadsheet();
var sheet = SpreadsheetApp.setActiveSheet(spreadsheet.getSheetByName(SheetName));
var lastRow = sheet.getLastRow();
sheet.getRange(lastRow+1, 1, data.length, data[0].length).setValues(data);
sheet.getDataRange().removeDuplicates();
};
function main() {
db = 'YOUR_DATABASE_NAME'
SQLquery = 'YOUR_SQL_QUERY'
raw_statistics = readData(db, SQLquery); //get raw statistics
pushDataToGoogleSheet(raw_statistics, 'YOUR_SHEET_NAME'); //push to google sheet
};
function main() {
db = 'YOUR_DATABASE_NAME'
SQLquery = 'YOUR_SQL_QUERY'
raw_statistics = readData(db, SQLquery); //get raw statistics
pushDataToGoogleSheet(raw_statistics, 'YOUR_SHEET_NAME'); //push to google sheet
};
However, in the pushDataToGoogleSheet it says that it can't define the length. So, I don't know if I put the right thing for data or not or if there is an issue in my code...
Do you have an idea ?
Thank you for your help !