在mysql中的字段之间显示记录不使用子查询

Question

如果 acct_no 相同，我希望字段 nilai_kredit 位于提交的 nilai_kredit 之间，但我不想使用子查询，因为速度很慢

SELECT
  a.acct_no,
  IF (a.kode = 'D', SUM(a.nilai), 0) AS nilai_debet,
  IF (a.kode = 'K', SUM(a.nilai), 0) AS nilai_kredit 
FROM
  tr2015 a
INNER JOIN acct2015 b
  ON a.acct_no = b.acct_no AND b.sub='AP'
WHERE a.tgl LIKE '2015-01%'AND a.hps <> '*'
GROUP BY a.acct_no,a.kode

this is my result

Answer 1

SELECT
  a.acct_no,
  SUM(IF(a.kode = 'D', a.nilai, 0)) AS nilai_debet,
  SUM(IF(a.kode = 'K', a.nilai, 0)) AS nilai_kredit 
FROM
  tr2015 a
INNER JOIN acct2015 b
  ON a.acct_no = b.acct_no AND b.sub='AP'
WHERE a.tgl LIKE '2015-01%'AND a.hps <> '*'
GROUP BY a.acct_no