[英]CodeIgniter - Change sub-query
我想將此子查詢更改為CodeIgniter。 如何使用規則CodeIgniter進行此查詢。
select *,
mahasiswa.nim AS id, (select count(id_absen)
from absen ABS
where ABS.nim = mahasiswa.nim
and tanggal >= DATE_SUB('$tgl_tutup_ujian', INTERVAL 3 MONTH) and tanggal <= '$tgl_tutup_ujian') AS jml_absen,
(select count(id_bayar) from pembayaran_iuran where ((bulan=MONTH(DATE_SUB('$tgl_tutup_ujian', INTERVAL 3 MONTH))
and tahun=YEAR(DATE_SUB('$tgl_tutup_ujian', INTERVAL 3 MONTH)))
or (bulan=MONTH(DATE_SUB('$tgl_tutup_ujian', INTERVAL 2 MONTH))
and tahun=YEAR(DATE_SUB('$tgl_tutup_ujian', INTERVAL 2 MONTH)))
or (bulan=MONTH(DATE_SUB('$tgl_tutup_ujian', INTERVAL 1 MONTH))
and tahun=YEAR(DATE_SUB('$tgl_tutup_ujian', INTERVAL 1 MONTH))))
AND pembayaran_iuran.nim = mahasiswa.nim)
AS jml_bayar from mahasiswa
left join pendaftaran_ukt on pendaftaran_ukt.nim = mahasiswa.nim
where nama like '$nama'
我嘗試這樣,但不工作。
$this->db->select('select *,mahasiswa.nim AS id, (select count(id_absen)');
$this->db->from('absen ABS');
$this->db->where('ABS.nim = mahasiswa.nim
and tanggal >= DATE_SUB('$tgl_tutup_ujian', INTERVAL 3 MONTH) and tanggal <= '$tgl_tutup_ujian') AS jml_absen');
$this->db->select(' (select count(id_bayar)');
$this->db->from('pembayaran_iuran');
$this->db->where('((bulan=MONTH(DATE_SUB('$tgl_tutup_ujian', INTERVAL 3 MONTH))
and tahun=YEAR(DATE_SUB('$tgl_tutup_ujian', INTERVAL 3 MONTH)))
or (bulan=MONTH(DATE_SUB('$tgl_tutup_ujian', INTERVAL 2 MONTH))
and tahun=YEAR(DATE_SUB('$tgl_tutup_ujian', INTERVAL 2 MONTH)))
or (bulan=MONTH(DATE_SUB('$tgl_tutup_ujian', INTERVAL 1 MONTH))
and tahun=YEAR(DATE_SUB('$tgl_tutup_ujian', INTERVAL 1 MONTH))))
AND pembayaran_iuran.nim = mahasiswa.nim)
AS jml_bayar from mahasiswa ');
$this->db->join('pendaftaran_ukt','pendaftaran_ukt.nim = mahasiswa.nim','left');
$this->db->order_by('id_ukt','asc');
$this->db->limit($limit, $offset);
我究竟做錯了什么?
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