Function getFromSources

packages/db/src/query/optimizer.ts:903–911

(from: From)

}

function getFromSources(from: From): Array<CollectionRefClass | QueryRefClass> {
  if (from.type === `unionFrom`) {
    return from.sources
  }
  if (from.type === `unionAll`) {
    return []
  }
  return [from]
}

function getFirstFromAlias(query: QueryIR): string | undefined {
  return getFromSources(query.from)[0]?.alias