Is there a way to have a table with column with a "parent" relationship and a separate column with roll up of "child" data?

You’ll probably need the ‘Same Table Backlinks’ script.

Hey Hanna Thanks for taking the time to look into this! I copied the code exactly and added two tables to match the Family Tree and Family Tree 2 names, but I didn’t have much luck. I got the following error using my example:

AMAZING! Thank you so much! That worked! I will leave the code below for anyone that finds this in the future. Thank you so much Hannah!

/*****************************************************************************************************
Name: Same Table Back Links
Date: July 9, 2021
Author: Kuovonne Vorderbruggen
Website: https://atmosphere.kuovonne.com

Description

Create backlinks for a table with same-table linked records

Usage

1. Copy and paste this script into Scripting App.
2. Click the “settings gear” for Scripting app and set the table and fields. No code changes necessary.
3. Click the “run” button for the script.

license

This script is provided “as is”, without warranty of any kind. Liability of the
author will be limited to a maximum of the original purchase price of the script.
The author will not be liable for any general, special, incidental, or consequential
damages.

*/

/*******************************************************************************
Script Configuration Settings

*/
const inputConfig = input.config({
title: ‘Create back links for same-table links’,
items: [
input.config.table(‘table’, {
label: ‘Table with same-table links’,
}),
input.config.field(‘fldLinkAuthority’, {
label: ‘Original Link’,
description: ‘This linked record field is the “source of truth” for links. Its values will not be changed.’,
parentTable: ‘table’,
}),
input.config.field(‘fldBackLink’, {
label: ‘Back Link field’,
description: ‘This linked record field will be updated to match information in the original link field.’,
parentTable: ‘table’,
}),
]
});

/*******************************************************************************
Main function for the script

*/

await main()
output.markdown("## Done")

/*******************************************************************************/

async function main() {
if (!checkSettings()) { return }
const userContinue = await input.buttonsAsync(Update backlinks in ${inputConfig.table.name}?, [“Continue”, “Cancel”])
if (userContinue == “Cancel”) {
return
}
const queryResult = await inputConfig.table.selectRecordsAsync({fields: [
inputConfig.fldLinkAuthority,
inputConfig.fldBackLink,
]})
output.markdown(Records to examine: ${queryResult.records.length})
// setup map of backlinks by recordId
let linkMap = {}
for (const record of queryResult.records) {
const currentBacklinks = record.getCellValue(inputConfig.fldBackLink)
linkMap[record.id] = {
currentBacklinkIds: (currentBacklinks ? currentBacklinks.map(obj => obj.id) : ),
newBacklinkIds: , // to be filled in later in script
}
}
// fill in newBacklinkIds
for (const record of queryResult.records) {
const linkedValue = record.getCellValue(inputConfig.fldLinkAuthority)
if (!linkedValue) {continue}
for (const obj of linkedValue) {
linkMap[obj.id].newBacklinkIds.push(record.id)
}
}
// figure out which records need updating
let recordsToUpdate =
for (const recordId of Object.keys(linkMap)) {
const currentBacklinkIds = linkMap[recordId].currentBacklinkIds
const newBacklinkIds = linkMap[recordId].newBacklinkIds
if ( (currentBacklinkIds.length == newBacklinkIds.length) && currentBacklinkIds.every(value => newBacklinkIds.includes(value))) {
continue // this recordId doesn’t need updating
}
recordsToUpdate.push({
id: recordId,
fields: {
[inputConfig.fldBackLink.name]: newBacklinkIds.map(id => ({id: id}))
}
})
}
output.markdown(Records to update: ${recordsToUpdate.length})
while (recordsToUpdate.length > 0) {
await inputConfig.table.updateRecordsAsync(recordsToUpdate.slice(0, 50));
recordsToUpdate = recordsToUpdate.slice(50);
}
}

/*******************************************************************************/

function checkSettings() {
if (
(inputConfig.fldLinkAuthority.type != “multipleRecordLinks”)
|| (inputConfig.fldBackLink.type != “multipleRecordLinks”)
|| (inputConfig.fldLinkAuthority.options.linkedTableId != inputConfig.table.id)
|| (inputConfig.fldBackLink.options.linkedTableId != inputConfig.table.id)
|| (inputConfig.fldBackLink.id == inputConfig.fldLinkAuthority.id)
) {
output.markdown(“Check fields in settings.”)
return false
}
return true
}
/*******************************************************************************
END OF SCRIPT

*/

Awesome! So glad it worked for you! Thank you for following up.

Thank goodness for scripting ninjas like Kuovonne. :grinning_face_with_smiling_eyes: