從另一張表找的3974行是張三,8319行是李四,3051行是王五;
從stu_score查id,stu_id兩列,聚合求出 得出張三,李四,王五在stu_score中的記錄條數?
from ?
( select ?id,stu_id? from ?stu_score)? as ?s
pivot
(
???? count (id)
???? for ?stu_id? in ?( [ 3974 ] , [ 8319 ] , [ 3051 ] )
) as ?pvt
?
? T-SQL Pivot Syntax
SELECT
??[non-pivoted column], -- optional
??[additional non-pivoted columns], -- optional
??[first pivoted column],
??[additional pivoted columns]
FROM (
??SELECT query producing sql da
??-- select pivot columns as dimensions and
??-- value columns as measures from sql tables
) AS TableAlias
PIVOT
(
??<aggregation function>(column for aggregation or measure column) -- MIN,MAX,SUM,etc
??FOR [<column name containing values for pivot table columns>]
??IN (
????[first pivoted column], ..., [last pivoted column]
??)
) AS PivotTableAlias
?
from
( select ?dept_id,?exam_name,? [ language ] ?
from ?stu_score,stu_studentinfo?
where ?stu_score.stu_id? = ?stu_studentinfo.id)? as ?t
pivot
(
???? avg ( [ language ] )
???? for ?dept_id? in ?( [ 407 ] , [ 408 ] , [ 409 ] , [ 415 ] )
) as ?pvt
結果如下:
| 考試名稱 | 一班 | 二班 | 三班 | 九班 |
| 考試一 | 89.26 | 88.33 | 90.36 | 85.25 |
| 考試二 | 82.26 | 87.98 | 80.36 | 85.25 |
| 期末 | 81.26 | 83.33 | 80.36 | 78.25 |
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