从Sql表的单个ID中选择多个Itme

Question

我有1个供应商的多个产品，供应商ID进入“产品”表，我想选择具有多个产品的供应商，帮帮我！我的大脑不起作用！

Answer 1

我认为您可以通过聚合来做您想做的事

select supplierid 
from table t
where MAMaterial in ('BUN', 'BEEF')
group by suppierid
having count(*) = 2;  -- number of materials in list

Answer 2

您可以尝试

Select supplerid from table
where MAMaterial in ('BUN', 'BEEF')

或

select TOP 1 supplerid from table
where MAMaterial in ('BUN', 'BEEF')

Answer 3

您可以使用Processing：

  preGetTrailheads(turl);
}
async function preGetTrailheads(turl) {
  var ths = await getTrailheads(turl);
  console.log("trailheads promise");
  console.log(ths);
  addTrailheadsToMap(ths);

}
async function getTrailheads(turl) {
  var result = await $.ajax({
    url: turl,
    datatype: 'json'
  });

  return result;
}