How can I exclude the tech_id's which are exactly repeating in SQL server?

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Work_Order_No	Tech_ID	ST_DATE
397129	         1205	2020-12-22 00:00:00.000
397129	         1315	2021-01-07 00:00:00.000
397129	         1205	2021-01-07 00:00:00.000
397129	         1293	2021-01-12 00:00:00.000
397129	         1263	2021-01-12 00:00:00.000
397129	         1205	2021-01-12 00:00:00.000

397595	         1256	2020-12-30 00:00:00.000
397595	         1358	2020-12-30 00:00:00.000
397595	         1322	2020-12-30 00:00:00.000
397595	         1256	2021-01-06 00:00:00.000
397595	         1322	2021-01-06 00:00:00.000
397595	         1358	2021-01-06 00:00:00.000

I am trying to Groupby Work_Order_No and want to see only the Tech_Id's which are not repeating: for example I want to exclude Work_Order_No = 397595, because on 2021-01-06 the exact same 3 tech worked as on 2020-12-30.
Basically, I just want those work_order_no's where exact same tech's did not go on another ST_Date: for example I would want the Work_order_no = 397129 in my results, because it has different Tech_id's going on different ST_DATE's

Not sure what Having condition to put here? the ones which I am putting would not include Work_order_no = 397129, which I want

What I have tried:

SELECT WORK_ORDER_NO,max(DISTINCT TECH_ID),St_date
FROM TR_LBR
group by WORK_ORDER_NO,St_date
ORDER BY WORK_ORDER_NO

Posted 29-Mar-22 5:34am

Member 15583281

Updated 29-Mar-22 10:29am

v8

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OriginalGriff · Answer 1 · 2022-03-29T05:43:00

Solution 1

Try a HAVING clause: SQL HAVING Clause[^] If you COUNT the number of different Techs and eliminate those with only one that should give you what you need.

Posted 29-Mar-22 5:43am

OriginalGriff

Comments

Member 15583281 29-Mar-22 11:48am

SELECT WORK_ORDER_NO,count(DISTINCT TECH_ID)
FROM TR_LBR
group by WORK_ORDER_NO
having count(DISTINCT TECH_ID)>1
ORDER BY WORK_ORDER_NO

tried this but didnt work, it still show like :
WORK_ORDER_NO Tech_id
397129 4
397595 3

Maciej Los 29-Mar-22 16:14pm

Short And To The Point!

Maciej Los · Answer 2 · 2022-03-29T10:14:00

Solution 2

I'm not sure what you want to achieve...

Try this:

SQL

SELECT Work_Order_No, Tech_ID, COUNT(*) AS Cnt
FROM SampleData
GROUP BY Work_Order_No, Tech_ID
HAVING COUNT(*)>1;

This will give you:

Work_Order_No 	Tech_ID 	Cnt
397129 	 	 	1205 	 	3
397595 	 	 	1256 	 	2
397595 	 	 	1322 	 	2
397595 	 	 	1358 	 	2

SQL Server 2019 | db<>fiddle[^]

Posted 29-Mar-22 10:14am

Maciej Los

Comments

Member 15583281 29-Mar-22 16:28pm

I am looking for those Work_order_no's where the same technician (Tech_id) is not going on the different date (ST_DATE)