Method _joinKeyValue

src/dialects/abstract/query-generator.js:2735–2744

(key, value, comparator, prefix)

  }

  _joinKeyValue(key, value, comparator, prefix) {
    if (!key) {
      return value;
    }
    if (comparator === undefined) {
      throw new Error(`${key} and ${value} has no comparator`);
    }
    key = this._getSafeKey(key, prefix);
    return [key, value].join(` ${comparator} `);
  }

  _getSafeKey(key, prefix) {
    if (key instanceof Utils.SequelizeMethod) {