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How to apply case when with if condition in MySql


By : Chippers255
Date : October 14 2020, 02:21 PM
like below fixes the issue I have below mentioned two tables: , The following query should solve this problem:
code :
SELECT t1.ID,
CASE WHEN min(t2.Red1)<min(t2.Red2) THEN t2.min_red1 ELSE t2.min_red2 END AS 
`Number`
FROM Table1 t1
LEFT JOIN 
(
SELECT 
    key,
    Red1
    Red2
    min(Red1) AS min_red1,
    min(Red2) AS min_red2
FROM Table2 ) AS t2
ON t1.key=t2.key
GROUP BY t1.ID;


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How to apply condition in case statement in then clouse


By : 游鎮寧
Date : March 29 2020, 07:55 AM
I hope this helps you . , Add the filter in Where clause instead of select. Try this
code :
SELECT sales_contract.contno, 
       sales_contract.date, 
       partymst.pname    AS PartyName, 
       customer.custname AS Customer, 
       itemmst.itname    AS ItemName, 
       sales_contract.grade, 
       sales_contract.rate, 
       sales_contract.weight
FROM   sales_contract 
       LEFT OUTER JOIN itemmst 
                    ON sales_contract.itcd = itemmst.itcd 
       LEFT OUTER JOIN customer 
                    ON sales_contract.customer = customer.custcd 
       LEFT OUTER JOIN partymst 
                    ON sales_contract.spartycd = partymst.partycd 
WHERE  ( @pending = 1 
         AND sales_contract.balweight > 0 ) 
        OR @pending <> 1

apply changes to case when on mysql


By : UnDeploy
Date : March 29 2020, 07:55 AM
Does that help i´m tryin to apply some changes to this query, maybe someone can correcting my query to meke it work. , I think you want something like this
code :
CASE
    WHEN ESTADO IN ('RECHAZADO', 'APROBADO') THEN ''
    ELSE ID_ESTADO
END AS ID_ESTADO

MySQL 'where case' apply only to some value


By : jacob balabanov
Date : March 29 2020, 07:55 AM
this one helps. You need to add an else segment to handle the services. If you want the case to yes allow for normal processing use 1 = 1.
code :
SELECT type, COUNT(id) AS `total`, MONTH(date_inserted) AS `month`
FROM routes
WHERE YEAR(date_inserted) = '2016' AND 
  type IN ('Transport', 'Services') AND 
  (CASE WHEN type = 'Transport' THEN 
        route_id IS NOT NULL OR
        route_type = 'Exceptional' OR 
        (route_type = 'Normal' AND km != 0)
  ELSE 
  1 = 1
  END)
GROUP BY type, `month`
ORDER BY date_inserted ASC, `total` DESC

MySQL how to SELECT FROM two distinct Sub Set within Same condition range and Order by a Case condition


By : sridharan panner
Date : March 29 2020, 07:55 AM
help you fix your problem I have real world mysql select problem with my website, I have members who's gender is either female or male, But they are not proportionally distributed, i.e 70% male, 30% female, , Have you tried a union?

MYSQL-Got different result when use sum(case when condition 1) and count(case when condition 1)


By : JoneWu
Date : March 29 2020, 07:55 AM
may help you . count() counts all non-null values, no matter what they are. So 0 is counted as well.
This would work with count()
code :
COUNT(CASE WHEN g.branchid=30  
           THEN 1
           ELSE NULL
       END)
COUNT(CASE WHEN g.branchid=30  
           THEN 1
       END)
SUM(g.branchid=30)
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