Show a sum row for numeric values and durations

Show a sum row for a numeric table

Basic

// Paste your DQL for the table here:
const query = `TABLE situps, steps
FROM "10 Example Data/dailys"
WHERE file.day.month = 2`
// change the name of the total row, if you like:
const nameOfTotalRow = "Sums";


// you don't need to touch this, normally.
// get the data from the query above
let DQL = await dv.tryQuery(query);
const sums = [nameOfTotalRow];
// for each header (except the first one, which is "File")...
for (let i = 1; i < DQL.headers.length; i++) {
    let sum = 0;
    // ... and for each row ...
    for (let k = 0; k < DQL.values.length; k++) {
        // get the current cell (row k and column i) and add it to the sum, if set
        let currentValue = DQL.values[k][i];
        if (currentValue) sum += currentValue 
    }
    if (!sum) sum = ""
    sums.push(sum);
}
// add a divider line for visual distinction between the query and the sums (thanks, Jillard!), add both to the table data
let hrArray = Array(DQL.headers.length).fill('<hr style="padding:0; margin:0 -10px;">');
DQL.values.push(hrArray)
DQL.values.push(sums)
//print the table
dv.table(DQL.headers, DQL.values)

Variants

Be able to calculate Durations and ignore non numeric or duration values

// Paste your DQL for the table here:
const query = `TABLE praying, training, situps, steps
FROM "10 Example Data/dailys"
WHERE file.day.month = 2`
// change the name of the total row, if you like:
const nameOfTotalRow = "Sums";


// you don't need to touch this, normally.
// get the data from the query above
let DQL = await dv.tryQuery(query);
const sums = [nameOfTotalRow];
// for each header (except the first one, which is "File")...
for (let i = 1; i < DQL.headers.length; i++) {
    let sum = 0;
    const dataType = getDatatypeOfColumn(i, DQL.values)
    // check if we have a calculateable datatype - if not, skip the column
    if (!["number", "duration"].includes(dataType)) {
        sums.push("")
        continue;
    }
    // ... and for each row ...
    for (let k = 0; k < DQL.values.length; k++) {
        // get the current cell (row k and column i) and add it to the sum, if set
        let currentValue = DQL.values[k][i];
        if (currentValue) sum += currentValue 
    }
    if (!sum) sum = ""
    sums.push(dataType === "duration" ? luxon.Duration.fromMillis(sum) : sum);
}

function getDatatypeOfColumn(columnNo, values) {
    let i = 0;
    let datatype;
    while (i < DQL.values[0].length && (!datatype || datatype === "null")) {
        datatype = dv.func.typeof(DQL.values[i][columnNo])
        i++;
    }
    return datatype;
}

// add a divider line for visual distinction between the query and the sums (thanks, Jillard!), add both to the table data
let hrArray = Array(DQL.headers.length).fill('<hr style="padding:0; margin:0 -10px;">');
DQL.values.push(hrArray)
DQL.values.push(sums)
//print the table
dv.table(DQL.headers, DQL.values)