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Jan 24th, 2018
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SQL 0.43 KB | None | 0 0
  1. SELECT
  2.     a.VALUE AS Varattuja_paikkoja,
  3.     b.VALUE AS Paikkoja_yhteensä,
  4.     (b.VALUE - a.VALUE) AS Vapaita_paikkoja
  5.     FROM (SELECT COUNT(*) AS VALUE
  6.             FROM Lentovaraus
  7.             WHERE Lentopäivä='2011-10-20'
  8.             AND LennonNumero='AY1115'
  9.     ) AS a,
  10.     (SELECT SUM(PaikkojenMäärä) AS VALUE
  11.         FROM Penkkirivi
  12.         WHERE KonetyypinNimi=(
  13.             SELECT Konetyyppi
  14.             FROM Lento
  15.             WHERE Päivämäärä='2011-10-20'
  16.             AND LennonNumero='AY1115'
  17.         )
  18.     ) AS b
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