Question

我的查询中有很多CTE，我知道这不是一个好习惯，但我需要帮助。

WITH cadet AS
  (SELECT afpsn,
          surname + ', ' + SUBSTRING(firstname, 1, 1) AS cname,
                           SUBSTRING(gender, 1, 1) AS gender
   FROM tblCadets
   WHERE pmaclass = @pmaclass
     AND company = @company),
     a AS
  (SELECT cadet.afpsn,
          AVG(ISNULL(testscore, 0)) AS pft1
   FROM cadet
   LEFT OUTER JOIN tblPfescore ON cadet.afpsn = tblPfeScore.afpsn
   WHERE testname = 'PFT 1'
     AND semester = @semester
     AND sy = @sy),
     b AS
  (SELECT cadet.afpsn,
          AVG(ISNULL(testscore, 0)) AS pft2
   FROM cadet
   LEFT OUTER JOIN tblPfescore ON cadet.afpsn = tblPfeScore.afpsn
   WHERE testname = 'PFT 2'
     AND semester = @semester
     AND sy = @sy),
     x AS
  (SELECT cadet.afpsn AVG(ISNULL(testscore, 0)) AS pabt1
   FROM cadet
   LEFT OUTER JOIN tblPfescore ON cadet.afpsn = tblPfeScore.afpsn
   WHERE testname = 'PABT 1'
     AND semester = @semester
     AND sy = @sy),
     d AS
  (SELECT AVG(ISNULL(testscore, 0)) AS pabt2
   FROM cadet
   LEFT OUTER JOIN tblPfescore ON cadet.afpsn = tblPfeScore.afpsn
   WHERE testname = 'PABT 2'
     AND semester = @semester
     AND sy = @sy),
     ab AS
  (SELECT a.afpsn,
          (a.pft1 + b.pft2) / 2 * (tblPfesub.percentage / 100) AS pftres
   FROM a
   INNER JOIN b ON a.afpsn = b.afpsn
   CROSS JOIN tblPfesub
   WHERE tblPfesub.subname = 'PFT'),
     xd AS
  (SELECT x.afpsn,
          (x.pabt1 + d .pabt2) / 2 * (tblPfesub.percentage / 100) AS pabtres
   FROM x
   INNER JOIN d ON x.afpsn = d .afpsn
   CROSS JOIN tblPfesub
   WHERE tblPfesub.subname = 'PABT'),
     abxd AS
  (SELECT ab.afpsn,
          (ab.pftres + xd.pabtres) AS pferes
   FROM ab
   INNER JOIN xd ON ab.afpsn = xd.afpsn),
     e AS
  (SELECT cadet.afpsn,
          AVG(ISNULL(score, 0)) AS score
   FROM cadet
   LEFT OUTER JOIN tblSfscore ON cadet.afpsn = tblScore.afpsn
   AND semester = @semester
   AND sy = @sy),
     f AS
  (SELECT cadet.afpsn,
          AVG(ISNULL(intrams, 0)) AS score
   FROM cadet
   LEFT OUTER JOIN tblCspscore ON cadet.afpsn = tblCspscore.afpsn
   AND semester = @semester
   AND sy = @sy),
     z AS
  (SELECT cadet.afpsn,
          AVG(ISNULL(collegue, 0)) AS score
   FROM cadet
   LEFT OUTER JOIN tblCspscore ON cadet.afpsn = tblCspscore.afpsn
   AND semester = @semester
   AND sy = @sy),
     h AS
  (SELECT cadet.afpsn,
          AVG(ISNULL(club, 0)) AS score
   FROM cadet
   LEFT OUTER JOIN tblCspscore ON cadet.afpsn = tblCspscore.afpsn
   AND semester = @semester
   AND sy = @sy),
     fzh AS
  (SELECT f.score AS score
   FROM f
   INNER JOIN cadet ON cadet.afpsn = f.afpsn
   UNION SELECT z.score AS score
   FROM z
   INNER JOIN cadet ON cadet.afpsn = z.afpsn
   UNION SELECT h.score AS score
   FROM h
   INNER JOIN cadet ON cadet.afpsn = h.afpsn)
SELECT CAST(ROUND(abxd.pferes, 2) AS numeric(36, 2)) AS pfe,
       CAST(ROUND(a.pft1, 2) AS numeric(36, 2)) AS pft1,
       CAST(ROUND(b.pft2, 2) AS numeric(36, 2)) AS pft2,
       CAST(ROUND(x.pabt1, 2) AS numeric(36, 2)) AS pabt1,
       CAST(ROUND(d .pabt2, 2) AS numeric(36, 2)) AS pabt2,
       CAST(ROUND(e.score, 2) AS numeric(36, 2)) AS sf,
       CAST(ROUND(f.score, 2) AS numeric(36, 2)) AS intrams,
       CAST(ROUND(z.score, 2) AS numeric(36, 2)) AS collegue,
       CAST(ROUND(h.score, 2) AS numeric(36, 2)) AS club,
       CAST(ROUND(MAX(ISNULL(fzh.score, 0)), 2) AS numeric(36, 2)) AS csp,
       cadet.afpsn,
       cadet.cname,
       cadet.gender
FROM a
CROSS JOIN b
CROSS JOIN x
CROSS JOIN d
CROSS JOIN abxd
CROSS JOIN e
CROSS JOIN fzh
CROSS JOIN f
CROSS JOIN z
CROSS JOIN h
CROSS JOIN cadet
GROUP BY f.score,
         z.score,
         h.score,
         abxd.pferes,
         a.pft1,
         b.pft2,
         x.pabt1,
         d .pabt2,
         e.score,
         fzh.score,
         cadet.afpsn,
         cadet.cname,
         cadet.gender
ORDER BY cadet.cname

以上查询无效。当我尝试执行SQL Management Studio时它只返回一个错误：必须声明标量变量@semester 。我多次复习，但我找不到错误。我需要一些帮助。

Answer 1

在运行查询之前 DECLARE @semester变量

DECLARE @semester NVARCHAR(MAx)

必须在CTE中声明标量变量错误

1 个答案: