How to SUM database column when join is used?

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How to SUM data column when join is used?

SQL

SELECT SUM(R.r_LimeGypsum),C.a_pH,C.c_FirstName,R.r_LimeGypsum
FROM dbo.Cultivator_tbl C
LEFT JOIN dbo.Recommendation_tbl R
ON C.Cid=R.Did

I am getting this error:

ERROR:Column 'dbo.Cultivator_tbl.a_pH' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.

Posted 3-Aug-13 2:37am

Rakhil Naik

Updated 3-Aug-13 3:28am

André Kraak

v2

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2 solutions

Solution 2

Add the Group By clause as explained in the error message, I am assuming that your statement is correct.

SQL

SELECT SUM(R.r_LimeGypsum),C.a_pH,C.c_FirstName,R.r_LimeGypsum
FROM dbo.Cultivator_tbl C
LEFT JOIN dbo.Recommendation_tbl R
ON C.Cid=R.Did
GROUP BY C.a_pH,C.c_FirstName,R.r_LimeGypsum

[Edit]Follow solution 1 above, there was no solution when adding my solution, he beat me to it, and gave you useful links.[/Edit]

Posted 3-Aug-13 3:38am

Boipelo

Updated 3-Aug-13 3:42am

v2

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André Kraak · Accepted Answer · 2013-08-03T03:34:00

If you want to display fields along side the aggregate function (SUM[^]) you need to use the GROUP BY[^] clause.

Here is an explanation of the GROUP BY clause: http://www.w3schools.com/sql/sql_groupby.asp[^].

Your statement would become:

SQL

  SELECT SUM(R.r_LimeGypsum),C.a_pH,C.c_FirstName,R.r_LimeGypsum
    FROM dbo.Cultivator_tbl C
    LEFT JOIN dbo.Recommendation_tbl R
           ON C.Cid=R.Did
GROUP BY C.a_pH,C.c_FirstName,R.r_LimeGypsum