Compare two SQL column values in Google Pie Chart - sql

Question

Afternoon all, I'm trying to compare two SQL columns values against each to work out the percentage and then display this output in Google charts
I have the following query..
SELECT Count(lineAudited) as total_count, 121 as total_required FROM SMT_24_Point_Check.dbo.auditRecord which displays two columns, one value is 111 and the second column is 121, therefore the percentage is 91%, When I try to input this query into Google Chart, it's only displaying the second columns value
This displays two columns, one value is 111 and the second column is 121, therefore the percentage is 91%, When I try to input this query into Google Chsart, it's only displaying the second columns value
function drawChartCategory() {
var data = google.visualization.arrayToDataTable([
['total_count', 'total_required'],
<?php
while($row = odbc_fetch_array($result1))
{
echo "['".$row["total_count'"]."', ".$row["total_required"]."],";
}
?>
]);
var options = {
title: 'Total audits completed',
width: 900,
height: 500,
backgroundColor: '#E8E8E8',
pieSliceText: 'value',
is3D: true
};
var chart = new google.visualization.PieChart(document.getElementById('piechartCategory'));
chart.draw(data, options);
}
How can I get it to show a segment of 91% and 9%?

Answer 1

check the data format for a PieChart
there should be two columns for each row / slice.
first column should be a string for the name of the slice,
the second a number for the value.
as such, try formatting your data as follows...
'Required', 111
'Not Required', 10
you cannot add the total as a slice or it will throw off the percentage.
while($row = odbc_fetch_array($result1))
{
echo "['Required', ".$row["total_required"]."],";
echo "['Not Required', ".($row["total_count'"] - $row["total_required"])."],";
}