學生成績 SQL 統計各班中英數常(包括分卷)各成績等級的人數

如果想利用 SQL 統計各班中英數常(包括分卷)各成績等級(ABCDE)的人數,
(A+ A- 歸 A，B+ B- 歸 B etc),
請問應如何編寫?
謝謝.

 

你好,

可以試試以下的SQL

Grade 我預設有A-F , 而考績(timeseq)就預定為1000 即年終, 如有需要可以自行修改。

Select
b.timeseq,
a.classcode,
c.ch_des 'subject',
(case when substring(b.SYSGRADECONVCOMPCODE,1,1)='A' then 'A' when substring(b.SYSGRADECONVCOMPCODE,1,1)='B' then 'B' when substring(b.SYSGRADECONVCOMPCODE,1,1)='C' then 'C' when substring(b.SYSGRADECONVCOMPCODE,1,1)='D' then 'D' when substring(b.SYSGRADECONVCOMPCODE,1,1)='E' then 'E' when substring(b.SYSGRADECONVCOMPCODE,1,1)='F' then 'F' else '--' end) 'grade_sub',
d2.ch_des 'subject_com',
(case when substring(d1.SYSGRADECONVCOMPCODE,1,1)='A' then 'A' when substring(d1.SYSGRADECONVCOMPCODE,1,1)='B' then 'B' when substring(d1.SYSGRADECONVCOMPCODE,1,1)='C' then 'C' when substring(d1.SYSGRADECONVCOMPCODE,1,1)='D' then 'D' when substring(d1.SYSGRADECONVCOMPCODE,1,1)='E' then 'E' when substring(d1.SYSGRADECONVCOMPCODE,1,1)='F' then 'F' else '--' end) 'grade_subcom',
count(case when substring(d1.SYSGRADECONVCOMPCODE,1,1)='A' then 'A' when substring(d1.SYSGRADECONVCOMPCODE,1,1)='B' then 'B' when substring(d1.SYSGRADECONVCOMPCODE,1,1)='C' then 'C' when substring(d1.SYSGRADECONVCOMPCODE,1,1)='D' then 'D' when substring(d1.SYSGRADECONVCOMPCODE,1,1)='E' then 'E' when substring(d1.SYSGRADECONVCOMPCODE,1,1)='F' then 'F' else '--' end) 'grade_subcom_count'
from wsadmin.vw_stu_lateststudent a
left outer join wsadmin.tb_asr_subjassessdata b on a.suid=b.suid and a.schlvl=b.schlevel and a.schsess=b.schsession and a.classlvl=b.classlevel and a.schyear=b.schyear and a.stuid=b.stuid and b.timeseq=1000
left outer join wsadmin.tb_hse_common c on a.suid=c.suid and b.subjcode=c.code_id and c.tb_id='SBJ'
left outer join wsadmin.TB_ASR_SUBJCOMASSESSDATA d1 on a.SUID = d1.SUID and a.SCHLVL = d1.SCHLEVEL and a.SCHSESS = d1.SCHSESSION and a.SCHYEAR = d1.SCHYEAR and a.STUID = d1.STUID and b.SUBJCODE = d1.SUBJCODE and b.TIMESEQ = d1.TIMESEQ
left outer join wsadmin.TB_HSE_SBJCMP d2 on d1.SUID = d2.SUID and d1.SUBJCODE = d2.SBJ_CODE and d1.SUBJCOMPCODE = d2.CODE_ID
left outer join wsadmin.TB_STU_STUSUBJ e on a.suid=e.suid and a.stuid=e.stuid and b.SUBJCODE = e.SUBJCODE and a.STUSCHRECID=e.STUSCHRECID
where a.schyear=?
group BY b.timeseq, a.classcode, c.ch_des, grade_sub, d2.ch_des, grade_subcom
order by a.classcode

 

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