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Editorial Team
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Asked: 2026-06-18T07:04:25+00:00

I have a Mysql query that selects some columns from 2 tables with an

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I have a Mysql query that selects some columns from 2 tables with an inner join. it is supposed to count the “Y” values from one table column and rturn this count with a Group By.

This is my query:

SELECT (SELECT Count(tblinterview.Contacted) FROM tblinterview WHERE tblinterview.Contacted = "Y") 
as Contact_Y , tbldata.RegionID, tbldata.BranchCode, tbldata.BranchDesc, tbldata.CampaignID,      tblinterview.EndTime      
FROM tbldata INNER JOIN tblinterview 
WHERE tblinterview.DataID = tbldata.DataId 
AND tblinterview.Complete = "Y"
GROUP BY tbldata.BranchCode, tbldata.RegionID, tblinterview.EndTime

By my result set is:
Where all the Contact_Y are the total count of all records instead of a grouping count. 

Contact_Y      RegionID        BranchCode           BranchDesc     CampaignID   EndTime
1407            1           9725            Dada Motors        31           2012-01-26 12:51:12
1407            1           9725            Dada Motors        31           2012-01-31 10:25:18
1407            1           9725            Dada Motors        31           2012-02-01 11:30:37
1407            1           9725            Dada Motors        31           2012-02-01 14:48:57
1407            3           9732            Ballito Autohaus   37       2012-01-16 15:04:12
1407            3           9732            Ballito Autohaus   46           2012-01-18 11:59:53
1407            3           9732            Ballito Autohaus   31           2012-01-20 14:26:12
1407            3           9732            Ballito Autohaus   31           2012-01-20 16:05:48

Could someone explain where my query is wrong?

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1 Answer

  1. Editorial Team

    Give this a try

    SELECT   (SELECT Count(s.Contacted) 
        FROM tblinterview s
        WHERE s.Contacted = "Y" AND 
        tbldata .DataID = s.DataID) as Contact_Y , 
        tbldata.RegionID, 
        tbldata.BranchCode, 
        tbldata.BranchDesc, 
        tbldata.CampaignID,      
        tblinterview.EndTime      
FROM    tbldata 
        INNER JOIN tblinterview  ON tblinterview.DataID = tbldata.DataId 
WHERE   tblinterview.Complete = "Y"
GROUP BY tbldata.BranchCode, tbldata.RegionID, tblinterview.EndTime
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