Method addIndexQuery

src/dialects/abstract/query-generator.js:625–733

(tableName, attributes, options, rawTablename)

   @private
  */
  addIndexQuery(tableName, attributes, options, rawTablename) {
    options = options || {};

    if (!Array.isArray(attributes)) {
      options = attributes;
      attributes = undefined;
    } else {
      options.fields = attributes;
    }

    options.prefix = options.prefix || rawTablename || tableName;
    if (options.prefix && typeof options.prefix === 'string') {
      options.prefix = options.prefix.replace(/\./g, '_');
      options.prefix = options.prefix.replace(/("|')/g, '');
    }

    const fieldsSql = options.fields.map(field => {
      if (field instanceof Utils.SequelizeMethod) {
        return this.handleSequelizeMethod(field);
      }
      if (typeof field === 'string') {
        field = {
          name: field
        };
      }
      let result = '';

      if (field.attribute) {
        field.name = field.attribute;
      }

      if (!field.name) {
        throw new Error(`The following index field has no name: ${util.inspect(field)}`);
      }

      result += this.quoteIdentifier(field.name);

      if (this._dialect.supports.index.collate && field.collate) {
        result += ` COLLATE ${this.quoteIdentifier(field.collate)}`;
      }

      if (this._dialect.supports.index.operator) {
        const operator = field.operator || options.operator;
        if (operator) {
          result += ` ${operator}`;
        }
      }

      if (this._dialect.supports.index.length && field.length) {
        result += `(${field.length})`;
      }

      if (field.order) {
        result += ` ${field.order}`;
      }

      return result;
    });