February 11, 2005 at 12:26 am
Hi experts,
When I execute the undermentioned query, I am getting an error message telling me that "No column was specified for column 1 of 'T1'." Could someone please explain what this error message implies. I am querying on the same table, but I am using two different table aliases. So, why the conflict. In the main query I am using the table alias T, and in the subquery, I am using the table alias t1. The code looks right to me. What am I missing here? Please help.
( SELECT date
FROM Table1 T
LEFT OUTER JOIN ( SELECT MIN(date)
FROM Table1
GROUP BY Date, PhoneNumber, Amount) T1
ON T.date = T1.date
WHERE T1.date IS NULL)
Thanks,
Newbie.
February 11, 2005 at 2:28 am
Following is a good article which match exactly with your requirements
http://qa.sqlservercentral.com/columnists/ccubley/findinganddeletingduplicatedata.asp
My Blog:
February 11, 2005 at 3:07 am
Change uoyr query
SELECT [date]
FROM Table1 T
LEFT OUTER JOIN ( SELECT MIN([date]) as DT
FROM Table1
GROUP BY [date], PhoneNumber, Amount) T1
ON T.[date] = T1.[DT]
WHERE T1.[DT] IS NULL
My Blog:
February 11, 2005 at 9:02 pm
Thanks guys for your responses.
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