如何使用SQL过滤某列同时等于两个条件？

Question

我有一个名为 PM_BATCH_ST 的表，如下所示：

BATCH_ID	结果
1000564932	国际学习中心
1000564932	有限责任公司
1000585739	国际学习中心
1000585739	有限责任公司
1000384769	国际学习中心
1000384769	有限责任公司
1000384757	有限责任公司
1000888940	国际学习中心

我可以过滤表以获得同时具有 ISC 条目和 LLC 条目的 BATCH_ID 吗？ 所以我想要的答案是：

1000564932

1000585739

1000384769

Answer 1

SELECT BATCH_ID
FROM PM_BATCH_ST
WHERE RESULT IN ('ISC', 'LLC')
GROUP BY BATCH_ID
HAVING COUNT(DISTINCT RESULT) = 2;

Answer 2

我认为以下方法可以做到：

select distinct batch_id
from  PM_BATCH_ST a
where a.result = 'ISC' and 
  exists (
    select 1
    from  PM_BATCH_ST b
    where a.batch_id=b.batch_id 
      and b.result='LLC'
  )

Answer 3

这可以使用

INTERSECT

来完成

SELECT BATCH_ID
FROM PM_BATCH_ST
WHERE RESULT = 'ISC'

INTERSECT

SELECT BATCH_ID
FROM PM_BATCH_ST
WHERE RESULT = 'LLC'

结果：

BATCH_ID
1000384769
1000564932
1000585739

Answer 4

对于 2 个值，我只需 self-

JOIN

并使用像这样的

WHERE

子句：

SELECT st1.BATCH_ID
FROM PM_BATCH_ST st1
JOIN PM_BATCH_ST st2 ON st1.BATCH_ID = st2.BATCH_ID
WHERE st1.RESULT = 'ISC' AND st2.RESULT = 'LLC'

这应该给你所有

BATCH_ID

同时拥有

ISC

和

LLC

作为

RESULT

SQL Fiddle 结果：

BATCH_ID
1000564932
1000585739
1000384769

Answer 5

CREATE TABLE PM_BATCH_ST (
    BATCH_ID INT,
    RESULT TEXT
);


INSERT INTO PM_BATCH_ST (BATCH_ID, RESULT)
VALUES
    (1000564932, 'ISC'),
    (1000564932, 'LLC'),
    (1000585739, 'ISC'),
    (1000585739, 'LLC'),
    (1000384769, 'ISC'),
    (1000384769, 'LLC'),
    (1000384757, 'LLC'),
    (1000888940, 'ISC');

/* @Qubicon has the most tighten-up answer. Below is another way of doing it*/

WITH ISC_table AS (
  SELECT *
  FROM PM_BATCH_ST
  WHERE CONVERT(VARCHAR, RESULT) IN ('ISC')
),
    LLC_table AS (
  SELECT *
  FROM PM_BATCH_ST
  WHERE CONVERT(VARCHAR, RESULT) IN ('LLC')
)

SELECT
  t1.BATCH_ID AS BATCH_ID
FROM ISC_table AS t1
INNER JOIN LLC_table AS t2
ON t1.BATCH_ID = t2.BATCH_ID;
  

BATCH_ID
1000564932
1000585739
1000384769

小提琴