Correction of Oracle9i Database
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1. How can this be corrected?
2. Fix the view.
SELECT C.CLIENT_ID,
C.FIRST_NAME,
C.LAST_NAME,
COUNT(W.AD_ID) NUMBER_OF_ADS
FROM CLASSMATE.CLIENTS C JOIN CLASSMATE.WANT_AD W
ON C.CLIENT_ID = W.AD_OWNER
GROUP BY C.CLIENT_ID,
C.FIRST_NAME.
C.LAST_NAME
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Solution Summary
Oracle9i Database is emphasized.
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SELECT C.CLIENT_ID,C.FIRST_NAME,C.LAST_NAME,COUNT(W.AD_ID) ...
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