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Access - Select distinct records where only one column is distinct


Access - Select distinct records where only one column is distinct

By : mark
Date : October 17 2020, 11:12 AM
I hope this helps you . I have an Access table with two columns (ID and Active) with data like the following: , Use this:
code :


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MySQL select all distinct values from column a for each distinct column b, where count distinct a >1

MySQL select all distinct values from column a for each distinct column b, where count distinct a >1


By : neoWP
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , OK, I think you mean this...http://sqlfiddle.com/#!3/b6100/6
Given
code :
create table loginattempts  
(
  login_key int,
  mac varchar(12) null,
  username varchar(12) null
)

insert into loginattempts values (1, 111, 'peter')
insert into loginattempts values (2, 111, 'bob')
insert into loginattempts values (3, 222, 'geoff')
insert into loginattempts values (4, 222, 'lisa')
insert into loginattempts values (1, 333, 'peter')
   select mac, username
   from loginattempts
   where
    mac in
    (
      select mac
      from loginattempts
      group by mac
      having count(*) > 1
     )
MAC USERNAME
111 peter
111 bob
222 geoff
222 lisa
How to select distinct records from two tables, combine into one column, and eliminate all records that exist in another

How to select distinct records from two tables, combine into one column, and eliminate all records that exist in another


By : SalCherchi
Date : March 29 2020, 07:55 AM
This might help you If you use where or join clauses in UNIONs you have to apply them to both select statements.
code :
SELECT index_text AS unique_text 
FROM words
where index_text NOT IN (SELECT body FROM sms)
UNION
SELECT c1index_text 
FROM words_content
WHERE c1index_text NOT IN (SELECT body FROM sms)
ORDER BY unique_text
Mysql query to select a distinct column and the count of a value in another column where column like distinct coumn?

Mysql query to select a distinct column and the count of a value in another column where column like distinct coumn?


By : ganesh kumar
Date : March 29 2020, 07:55 AM
This might help you You can use an aggregate function with a CASE expression to convert the rows into columns:
code :
select week,
  sum(case when result = 'good' then 1 else 0 end) GoodResult,
  sum(case when result = 'bad' then 1 else 0 end) BadResult
from yt
group by week;
Select distinct group of records only when all of the records' certain column is of a certain value

Select distinct group of records only when all of the records' certain column is of a certain value


By : Cazo
Date : March 29 2020, 07:55 AM
Hope that helps I have 8 records below:
code :
select min(ID), [Common ID], max(Reject)
from tablename
group by [Common ID]
having count(*) = count(case when Reject = 'YES' then 1 end)
having count(*) = count(Reject)
LINQ- How to select distinct records against distinct column

LINQ- How to select distinct records against distinct column


By : Rosie
Date : March 29 2020, 07:55 AM
Does that help I have created a Web API in which I am trying to fetc all records giving a date time range. , Is this what you are trying to achieve?
code :
medEntitites.tj_xhqd.OrderByDescending(x => x.zdjh).ThenByDescending(x => x.sjsj).ThenByDescending(x => x.xhqd).DistinctBy(x => x.zdjh).ToList();
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