質問があります。結合されたすべてのキーのインデックスを作成し、マスター テーブルを事前にフィルター処理して、選択する特定の行を選択しましたが、表示に時間がかかります (ハングする場合があります)。パフォーマンスを向上させるにはどうすればよいですか?
SELECT *
FROM t_responden a
INNER JOIN t_kepemilikan_tik b
ON a.res_id = b.res_id
INNER JOIN t_televisi c
ON a.res_id = c.res_id
INNER JOIN t_telepon_hp d
ON a.res_id = d.res_id
INNER JOIN t_radio e
ON a.res_id = e.res_id
INNER JOIN t_media_cetak f
ON a.res_id = f.res_id
INNER JOIN t_internet g
ON a.res_id = g.res_id
LEFT JOIN t_mst_pendidikan n
ON a.res_pendidikan_kk = n.kd_pendidikan
LEFT JOIN t_mst_pendidikan o
ON a.res_pendidikan = o.kd_pendidikan
LEFT JOIN t_mst_penghasilan p
ON a.res_penghasilan = p.kd_penghasilan
LEFT JOIN t_mst_aksesibilitas q
ON a.res_aksesibilitas = q.kd_akses
LEFT JOIN t_mst_mobilitas r
ON a.res_mobilitas = r.kd_mobilitas
LEFT JOIN t_mst_pekerjaan s
ON a.res_pekerjaan = s.kode
LEFT JOIN t_mst_pengeluaran t
ON a.res_pengeluaran = t.kode
INNER JOIN t_pernyataan h
ON a.res_id = h.res_id
INNER JOIN (SELECT * FROM t_mst_prop WHERE kode IN ( '3200', '1600', '1800', '3600' )) i
ON a.res_propinsi = i.kode
INNER JOIN (SELECT * FROM t_mst_kabkota WHERE kode_prop IN ( '3200', '1600', '1800', '3600' )) j
ON ( a.res_kabkota = j.kode
AND a.res_propinsi = j.kode_prop )
INNER JOIN (SELECT * FROM t_mst_kec WHERE kode_prop IN ( '3200', '1600', '1800', '3600' )) k
ON ( a.res_kecamatan = k.kode
AND a.res_kabkota = k.kode_kabkota
AND a.res_propinsi = k.kode_prop )
INNER JOIN (SELECT * FROM t_mst_desa WHERE kode_prop IN ( '3200', '1600', '1800', '3600' ))l
ON ( a.res_keldesa = l.kode
AND a.res_kabkota = l.kode_kabkota
AND a.res_propinsi = l.kode_prop
AND l.kode_kec = a.res_kecamatan )
WHERE a.res_tahunsurvei = 2013
AND res_propinsi IN ( '3200', '1600', '1800', '3600' )
ORDER BY 1