code: function exec(sqlQuery, poolName) {
    return new Promise((resolve, reject) => {
      db.connect((err, client, done) => {
        if (err) {
          reject(err);
        }
        client.query(sqlQuery, (err, results) => {
          if (err) {
            reject(err);
          }
          resolve(results);
        });
      }, poolName || 'default', );
    });
  }
docs: Execute a sql query with pg.Pool
  
  @param  {ParametizedQuery} sqlQuery Parametized pg query object
  @return {Promise<Object>}           Resolve with query results
  
  @example
  
  const query = require('./query')
  const SQL = query.SQL
  
  const id = 2
  
  query.exec(SQL`SELECT * FROM "Users" WHERE id = ${id}`)
  .then((result) => {
  console.log('User', result.rows[0])
  })