Get corrsponding row value in next column in SQL

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I am having SQL table where the records of the employee on daily basis are stored/saved I would like to get that result in tabular format as shown in attached screenshots i am using SQL 2012

ALM TIME	TAGNAME	STATUS	NORMSTS	        UNIT	TEMP	OPERNAME
2019-07-07 10:10:00	A	LO		C	18.5	JOHN
2019-07-07 10:11:00	B	LO		C	14.2	WILLIAM
2019-07-07 10:14:00	C	LO		C	14.36	WILLIAM
2019-07-07 10:15:00	B	OK		C	12.01	KATE
2019-07-07 10:17:00	A	OK		F	17	JOHN
2019-07-07 10:18:00	A		Y	C	17.26	JOHN
2019-07-07 10:19:00	D	LO		PA	11.2	KATE
2019-07-07 10:21:00	C	OK		C	22.21	WILLIAM
2019-07-07 10:24:00	E	LO		C	27.5	JOHN
2019-07-07 10:25:00	E	OK		C	28.1	KATE
2019-07-07 10:27:00	D	OK		PA	15.24	JOHN
2019-07-07 10:29:00	B		Y	C	15.36	WILLIAM
2019-07-07 10:30:00	D		Y	F	17.25	JOHN

ALM IN	ALM OUT	TAG	UNIT	TEMP	OPERNAME	ALM ACK TIME
2019-07-07 10:10:00	2019-07-07 10:17:00	A	C	18.5	JOHN	2019-07-07 10:18:00
2019-07-07 10:11:00	2019-07-07 10:15:00	B	C	14.2	WILLIAM	2019-07-07 10:29:00
2019-07-07 10:14:00	2019-07-07 10:21:00	C	C	14.36	WILLIAM	-----
2019-07-07 10:19:00	2019-07-07 10:27:00	D	C	15.54	KATE	2019-07-07 10:30:00

What I have tried:

<pre>
select ALM_DESCR,
       max(case when [ALM_ALMSTATUS] = 'lo' then [ALM_NATIVETIMELAST] end) as intime,
       max(case when [ALM_ALMSTATUS] = 'ok' then [ALM_NATIVETIMELAST] end) as outtime
      from fixalarms WHERE ALM_NATIVETIMELAST BETWEEN '2019-05-20 06:00:00' AND  '2019-05-20 21:00:00'
group by ALM_DESCR;

Posted 7-Aug-19 21:13pm

Lalit Acharekar.

Updated 7-Aug-19 21:37pm

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jsc42 28-Oct-19 7:35am

I've learnt something new today, having looked at your SQL. I did not know that the ELSE clause in a CASE was optional. I've looked it up and the docs say it defaults to ELSE NULL. I think that I'll still always put an explicit ELSE in my code just to confirm that I've at least considered the possibility; but that is the exciting thing about reading other people's code - there is always new things to discover or new ways of doing old things.

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Wendelius · Answer 1 · 2019-08-07T21:38:00

Solution 1

You can use LAG and LEAD functions to fetch data from the neighboring rows. I've posted a small tip about this. Have a look at How to fetch data from the previous or next rows in the resultset[^]

Posted 7-Aug-19 21:38pm

Wendelius