--分数段分布 
DECLARE @levels VARCHAR(100) = '10,20,30,40,50,60,70,80,90,100'; --自定义分数段
DECLARE @paperId VARCHAR(100)='0000000000001019'--试卷编号
WITH tbTemp AS (--处理分数段SELECT L.levelFROM   (SELECT [value] = CONVERT(XML, '<v>' + REPLACE(@levels, ',', '</v><v>') + '</v>')) TOUTER APPLY (SELECT LEVEL = CONVERT(INT, N.v.value('.', 'varchar(100)'))FROM   T.[value].nodes('/v') N(v)) L), tbLevel AS (--生成分数段区间SELECT (SELECT ISNULL(MAX(t.level), 0)FROM   tbTemp AS tWHERE  t.LEVEL < tt.level)         AS level0,tt.level  AS level1FROM   tbTemp    AS tt),tbScore AS(--处理成绩为null或0分，为了分配到0-？区间SELECT (CASE WHEN tp.GetScore > 0 THEN tp.GetScore ELSE 0.1 END) AS pScoreFROM   成绩表 AS tpWHERE  tp.PaperID = @paperId)
--统计区间人次
SELECT tl.level0,tl.level1,(SELECT COUNT(0)FROM   tbScore AS tsWHERE  ts.pScore > level0AND ts.pScore <= level1)        AS ExamCount
FROM   tbLevel  AS tl;

levels = '10,20,30,40,50,60,70,80,90,100'; 

levels = '40,60,80,100';