From Sheshant Kashyap, a New Way to Do SOQL ‘IN’ Queries in Flow

Sheshant blogs via Salesforce Binge, and has posted an installable action that lets you build up IN queries using Assignment elements:

It’s a nice addition to SOQL support extensions, which currently include:

Developer Note: Note the way that Sheshant leverages Apex-Defined Types to create a compact, targeted data structure that can be used in Assignment elements. I’ll state that I think that Apex-Defined Types are the biggest source of untapped opportunity to extend Flow!