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To speed up the sampling generation, it is recommended to use the selectAttributes() method of the SimpleRecord class.

The example below generates an array containing IDs of the records:

selectAttributes

const user = new SimpleRecord('user');
user.addQuery('email', 'like', 'best.company');
user.selectAttributes('sys_id'); // select sys_id only
user.query();
const userIDs = [];
while (user.next()) {
  userIDs.push(user.sys_id);
}

Add a records count preview before updating/deleting:

updateMultiple

const record = new SimpleRecord('sys_vcs_preview_log');
record.addQuery('retrieved_pack_id', current.sys_id);
record.addQuery('state', 'skipped');
record.addQuery('error_text', 'The system has a newer record');
record.query();
ss.addInfoMessage(`corrections for ${record.getRowCount()} objects`);
record.setMultipleValue('state', 'good');
//record.updateMultiple();

deleteMultiple

const record = new SimpleRecord('imp_ldap_users');
record.addEncodedQuery( `imp_company%3DSofaShop.ru^sys_created_atLIKE2019-`);
record.query();
ss.addInfoMessage(record.getRowCount());
//current.deleteMultiple();

Comment your code when you use the Choice attributes in your scripts:

if (current.stage == '4' || current.stage == '6') { // Canceled OR Completed
  const start = new SimpleDateTime(current.start_time);
  //...

Use the getAttributes() method to check an object before inserting or updating:

getAttributes

const task = new SimpleRecord('task');
task.initialize();
ss.info(JSON.stringify(task.getAttributes(), null, 2));
/* Info: {
  "sys_id": "",
  "parent_id": "",
  "assigned_user": "",
  "number": "",
  "short_description": "",
  "active": 1,
  ...
*/

Also, this method allows checking whether an object has a specified attribute or not before calling:

getAttributes

if (task.getAttributes()['has_breached'] != undefined) {
  task.has_breached = true; // SLA Breached
  task.update();
}

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Recommendations