Function groupPredicatesByField

packages/db/src/query/predicate-utils.ts:1342–1367

(
  predicates: Array<BasicExpression<boolean>>,
)

}

function groupPredicatesByField(
  predicates: Array<BasicExpression<boolean>>,
): Map<string | null, Array<BasicExpression<boolean>>> {
  const groups = new Map<string | null, Array<BasicExpression<boolean>>>()

  for (const pred of predicates) {
    let fieldKey: string | null = null

    if (pred.type === `func`) {
      const func = pred as Func
      const field =
        extractComparisonField(func) ||
        extractEqualityField(func) ||
        extractInField(func)
      if (field) {
        fieldKey = field.ref.path.join(`.`)
      }
    }

    const group = groups.get(fieldKey) || []
    group.push(pred)
    groups.set(fieldKey, group)
  }

  return groups
}

function unionSameFieldPredicates(
  predicates: Array<BasicExpression<boolean>>,