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Old November 25th, 2004, 11:00 PM
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Default Join Query

Hello mates,

  I have two tables. operationdetails and dailyoperations
indexno (PK) job_code operation_no description

dindex empid job_code operation_no qtyfinishes

I need a report to get

job_code(from table1) operation_no(from tab1) finishedqty(tab2)

04A001 10 200
04A002 15 150
04A003 17 0 (means no records in tab2 for that operation)

The first table qry is like this
select job_code,operation_no from operationdetails where description='QUALITY CHECKING'

I need to get sum(qty) from second table whose job_code and operation_no matches.

Can u suggest the query?

Old November 26th, 2004, 04:26 AM
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What you can get away with will depend on your database, but the following works with MySQL
SELECT od.job_code, od.operation_no, COUNT(do.dindex) 
FROM operationdetails od LEFT JOIN dailyoperations do 
ON od.job_code = do.job_code AND od.operation_no = do.operation_no 
GROUP BY od.job_code, od.operation_no;


Old December 2nd, 2004, 09:31 AM
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can i select 2 or more tables without join it? and is there any disadvantages or the advantages...without make the tables joined.may u give me diexamples query, without join mode. thx

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