Query has duplicate fields error

Query has duplicate fields error

Posted by: bnguyen on 11 January 2024, 10:52 am EST

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  bnguyen

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  Posted 11 January 2024, 10:52 am EST - Updated 11 January 2024, 10:57 am EST

  When trying to add a stored procedure to my data set, I get the error message attached. Is there anyway to prevent this from occurring?

  It is due to multiple select queries with the same column name, however they are not supposed to be added to the dataset

  

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  akshay.rajput

  

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  Posted 11 January 2024, 10:49 pm EST

  Hi Bryan,

  In SQL, you cannot have duplicate column names in a table. If you’re dealing with a result set that has duplicate column names due to a join or some other operation, you might want to use aliases to rename the columns in the result set.

  I would suggest you to use the “AS” keyword in SQL to rename the columns. For more info: SQL AS

  Sample query:

  SELECT
    table1.PID AS PID1,
    table1.TID AS TID1,
    table1.CID AS CID1,
    table2.ID AS ID1,
    table2.CID AS CID2,
    table3.ID AS ID2
  FROM
    table1
  JOIN table2 ON table1.some_column = table2.some_column
  JOIN table3 ON table2.some_column = table3.some_column;
  
  

  Regards,

  Akshay