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  1. Practice
  2. SQL
  3. Basic Select
  4. Weather Observation Station 5
  5. Discussions

Weather Observation Station 5

  • adam_allard + 2 comments

    I get an error when trying this:

    SELECT CITY, LENGTH(CITY) FROM STATION ORDER BY LENGTH(CITY), CITY FETCH FIRST 1 ROWS ONLY 
* 
ERROR at line 1: 
ORA-00933: SQL command not properly ended
    • virenderkumar + 1 comment

      this is not a right query or syntex. please do read about syntex of "ORDER BY" and also on "HAVING" clause.

      • adam_allard + 1 comment

        the syntax for ORDER BY is correct. If I run the exact same query without the FETCH clause then the query works just fine.

        Going off these docs, my query with FETCH should work just fine. https://oracle-base.com/articles/12c/row-limiting-clause-for-top-n-queries-12cr1

        • virenderkumar + 3 comments

          Try this in "oracle" envoirment:

          select city,length_city from (select a.*, rownum r from (select length(city) length_city,city from station order by length_city, city) a) where r in (1,(select count(*) from station))

          • adam_allard + 0 comments

            Yes I'm using Oracle DB, as my original post stated.

            Thank you for your answer, but I am wondering why Oracle's FETCH clause is not working here...

          • faiza_fiz2015 + 0 comments

            Can you explain this query?

          • aravind_bijjala1 + 0 comments

            if there are more cities with length 21 this doesnt work

    • srishti_me + 0 comments

      Semicolon is missing