Method groupBy

packages/db/src/clickhouse/query-builder.ts:204–207

(columns: (string | null | undefined | false)[])

  // Group by methods
  groupBy(columns: (string | null | undefined | false)[]): this {
    this._groupBy = columns.filter((col): col is string => Boolean(col));
    return this;
  }

  // Having methods
  having(column: string, operator: Operator, value: SqlParam): this {