獲取表中數據組的記錄總數

Question

我正在使用SQL Server 2008R2數據庫。我有一個查詢，用於從我們的數據庫獲取一些實驗室結果數據，用於訪問我們的辦公室超過2次的患者。以下是查詢：

;WITH PatientData (patient_id,last_name, first_name, ethnic_group, 
race, icdcode, encounter_date, test_performed, result_value, 
result_units) 
AS 
(
SELECT pat.patient_id, pat.last_name, Pat.first_name, pat.ethnic_group, 
pat.race, pl.icdcode, enc.encounter_date, lab.test_performed, lab.result_value, 
lab.result_units 
FROM dbo.dem_patient pat 
RIGHT JOIN dbo.med_problemlist as pl 
ON pat.patient_id = pl.patient_id 
JOIN dbo.enc_encounter as enc 
ON pat.patient_id = enc.patient_id 
JOIN dbo.med_labresult as lab 
ON pat.patient_id = lab.patient_id 
WHERE pl.icdcode like '250%' AND 
enc.encounter_date >= '01/01/2012' AND enc.encounter_date <= '12/31/2012' AND 
pat.last_name != 'test' AND (lab.test_performed = 'HgbA1c' OR 
lab.test_performed = 'Hemoglobin A1c') 
GROUP BY pat.patient_id, pat.last_name, Pat.first_name, pat.ethnic_group, 
pat.race, pl.icdcode, enc.encounter_date, lab.test_performed, lab.result_value, 
lab.result_units 
) 
SELECT patient_id,last_name, first_name, ethnic_group, 
race, icdcode, encounter_date, test_performed, result_value, 
result_units 
FROM PatientData pd1 
WHERE EXISTS (SELECT patient_id 
       FROM PatientData pd2 
       WHERE pd2.patient_id = pd1.patient_id 
       GROUP BY patient_id 
       HAVING COUNT(*)>1) 
ORDER BY pd1.race, pd1.ethnic_group 

這適用於獲取患者列表和他們的實驗室結果值。它返回如下內容：

patient_id encounter_date test_performed result_value result_units 
00001   01/15/2012  HgbA1c   5.6    % 
00001   05/03/2012  HgbA1c   8.6    % 
00025   02/02/2012  HgbA1c   9.1    % 
00064   07/01/2012  HgbA1c   7.6    % 

但是，我現在想分組這些數據，並獲得不同結果值之間的結果總數。例如，我想有結果，看起來是這樣的：

LessThan7% 7%To8%  8%To9% GreaterThan9% 
775   289  365  154 

我已經能夠做到在利用CROSS JOIN功能，過去類似的東西。但是，從來沒有這樣複雜的查詢。我真的可以用一些幫助。

謝謝！

UPDATE：

在下面的意見，我已經更新了查詢到以下幾點：

;WITH PatientData (patient_id,last_name, first_name, ethnic_group, 
race, icdcode, encounter_date, test_performed, result_value, 
result_units) 
AS 
(
SELECT pat.patient_id, pat.last_name, Pat.first_name, pat.ethnic_group, 
pat.race, pl.icdcode, enc.encounter_date, lab.test_performed, lab.result_value, 
lab.result_units 
FROM dbo.dem_patient pat 
RIGHT JOIN dbo.med_problemlist as pl 
ON pat.patient_id = pl.patient_id 
JOIN dbo.enc_encounter as enc 
ON pat.patient_id = enc.patient_id 
JOIN dbo.med_labresult as lab 
ON pat.patient_id = lab.patient_id 
WHERE pl.icdcode like '250%' AND 
enc.encounter_date >= '01/01/2012' AND enc.encounter_date <= '12/31/2012' AND 
pat.last_name != 'test' AND (lab.test_performed = 'HgbA1c' OR 
lab.test_performed = 'Hemoglobin A1c') 
GROUP BY pat.patient_id, pat.last_name, Pat.first_name, pat.ethnic_group, 
pat.race, pl.icdcode, enc.encounter_date, lab.test_performed, lab.result_value, 
lab.result_units 
) 
select sum(case when isnumeric(result_value) = 1 
     then (case when result_value < 7.0 then 1 else 0 end) 
     end) as [LessThan7%], 
     sum(case when isnumeric(result_value) = 1 
     then (case when result_value >= 7.0 and result_value < 8.0 then 1 else 0 end) 
     end) as [7%to8%], 
     sum(case when isnumeric(result_value) = 1 
     then (case when result_value >= 8.0 and result_value < 9.0 then 1 else 0 end) 
     end) as [8%to9%], 
     sum(case when isnumeric(result_value) = 1 
     then (case when result_value >= 9.0 then 1 else 0 end) 
     end) as [GreaterThan9%] 
FROM PatientData pd1 
WHERE EXISTS (SELECT patient_id 
       FROM PatientData pd2 
       WHERE pd2.patient_id = pd1.patient_id 
       GROUP BY patient_id 
       HAVING COUNT(*)>1) 

不過，我仍然得到「Arithmic溢出錯誤轉換VARCHAR數據類型的數字「

任何額外的幫助，非常感謝。

Answer 1

這是一個有條件的聚集：

with query as (your query here) 
select sum(case when result_value < 0.07 then 1 else 0 end) as [LessThan7%], 
     sum(case when result_value >= 0.07 and result_value < 0.08 then 1 else 0 end) as [7%to8%], 
     sum(case when result_value >= 0.08 and result_value < 0.09 then 1 else 0 end) as [8%to9%], 
     sum(case when result_value >= 0.09 then 1 else 0 end) as [GreaterThan9%] 
from query 

安排您的查詢with子句中去。

如果result_value存儲爲一個字符，然後試試這個：

select sum(case when isnumeric(result_value) = 1 
       then (case when result_value < 0.07 then 1 else 0 end) 
      end) as [LessThan7%], 
     sum(case when isnumeric(result_value) = 1 
       then result_value >= 0.07 and result_value < 0.08 then 1 else 0 end) 
      end) as [7%to8%], 
     sum(case when isnumeric(result_value) = 1 
       then (case when result_value >= 0.08 and result_value < 0.09 then 1 else 0 end) 
      end) as [8%to9%], 
     sum(case when isnumeric(result_value) = 1 
       then (case when result_value >= 0.09 then 1 else 0 end) 
      end) as [GreaterThan9%] 

您需要嵌套case表，以確保isnumeric()運行之前嘗試的轉換。