Function selectExact

docs/tests/v2/es6/js/sanddance.js:148836–148847

(column, value)

}

function selectExact(column, value) {
  if (value == null) {
    return selectNullOrEmpty(column);
  }

  const searchExpression = {
    name: column.name,
    operator: '==',
    value
  };
  return searchExpression;
}

function selectNone(column, values) {
  const expressions = values.map((value, i) => {