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Databases

CONCAT function

In the library database there's a patrons table listing all the users of the library. The columns are id, first_name, last_name, address, email, library_id and zip_code. Generate a list of strings that are in the following format: Andrew Chalkley andrew@teamtreehouse.com. Concatenate the first name, last name and email address for all users. Alias it to to_field. This will be used in the "To" field in email marketing.

Solution I came up with is below

SELECT first_name ||" " ||last_name ||" " ||"<"|| email ||">"|| "." AS "To" FROM patrons;

Can anyone tell me the cause of this error..?

Thanks.

Why do we have to use " To " -- "" for To ?

2 Answers

Steven Parker
Steven Parker
231,128 Points

It looks like you used the wrong alias.

The instructions say "Alias it to to_field", but your alias is just "To".

In future questions, to facilitate the most complete and accurate analysis, always provide a link to the course page you are working with.


UPDATE: Now that I've seen the challenge, apparently that final period is just the end of the sentence and not part of the format they want you to use. The final character in your concatenated field should be ">".

Steven Parker Yes I checked.

Thank you..

Steven Parker

https://teamtreehouse.com/library/reporting-with-sql/working-with-text/concatenating-text

Hi this is the link.

I tried to change the query as per what you said.. It still shows an error.