Function extractComparisonField

packages/db/src/query/predicate-utils.ts:1195–1211

(func: Func)

}

function extractComparisonField(func: Func): ComparisonField | null {
  // Handle comparison operators: eq, gt, gte, lt, lte
  if ([`eq`, `gt`, `gte`, `lt`, `lte`].includes(func.name)) {
    // Assume first arg is ref, second is value
    const firstArg = func.args[0]
    const secondArg = func.args[1]

    if (firstArg?.type === `ref` && secondArg?.type === `val`) {
      return {
        ref: firstArg,
        value: secondArg.value,
      }
    }
  }

  return null
}

function extractEqualityField(func: Func): ComparisonField | null {
  if (func.name === `eq`) {