Method evalQuery

packages/reltab/src/DataSource.ts:136–162

(
    query: QueryExp,
    offset?: number,
    limit?: number,
    options?: EvalQueryOptions
  )

  }

  async evalQuery(
    query: QueryExp,
    offset?: number,
    limit?: number,
    options?: EvalQueryOptions
  ): Promise<TableRep> {
    const sqlQuery = await this.getSqlForQuery(query, offset, limit);
    const schema = query.getSchema(this.db.dialect, this.tableMap);
    const trueOptions = options ? options : defaultEvalQueryOptions;

    if (trueOptions.showQueries) {
      // log.info("time to generate sql: %ds %dms", t1s, t1ns / 1e6);
      log.info("evalQuery: evaluating:\n" + sqlQuery);
    }

    const rows = await this.db.runSqlQuery(sqlQuery);
    const ret = new TableRep(schema, rows);

    /*
    if (this.showQueries) {
      log.info("time to run query: %ds %dms", t3s, t3ns / 1e6);
      log.info("time to mk table rep: %ds %dms", t4s, t4ns / 1e6);
    }
    */

    return ret;
  }

  async rowCount(query: QueryExp, options?: EvalQueryOptions): Promise<number> {
    await this.ensureLeafDeps(query);