2 tables with an ID for name on 1 table

Question

0.00/5 (No votes)

See more:

I'm trying to use a name for 2 seperate columns.

What I had is working below. But this only shows the first name/last name for the person who has declared a tip.

I want to be able to concat the first name and last name and use that where dt.last_modified_user_id is. Would this be a seperate select statement?

I used to use sql server and would be able to do this via a query editor - but I'm now trying to use MySQL so I'm a little buffedled.

What I have tried:

select dt.declare_time, p.first_name, p.last_name, dt.amount, dt.last_modified_time, dt.Last_Modified_User_ID from declared_tip dt
join person p on dt.person_id = p.id

Posted 10-Feb-17 3:19am

Mendaharin

Updated 22-Feb-17 7:49am

Add a Solution

Comments

Bryian Tan 10-Feb-17 9:35am

any error messages?

Karthik_Mahalingam 10-Feb-17 9:47am

what is your expected output

Mendaharin 10-Feb-17 9:54am

I'm not getting any error messages. It's just the current output.

What I'm trying to achieve is the following column headings.

declare time | First_Name | Last_name | Amount | Last_modified_time | Name of modifier (dt.last_modified_user_ID)

the name comes from the same person table (person)

Karthik_Mahalingam 12-Feb-17 6:08am

Always use Reply button, to post Comments/query to the user, so that the user gets notified and responds to your text.

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Database Star · Answer 1 · 2017-02-22T07:49:00

You'll need to join to another instance of the person table. You can do this in SQL by using a table alias in your JOIN clause.

SELECT dt.declare_time,
p.first_name,
p.last_name,
dt.amount,
dt.last_modified_time,
dt.Last_Modified_User_ID,
dtp.first_name,
dtp.last_name
FROM declared_tip dt
JOIN person p ON dt.person_id = p.id
JOIN person dtp ON dt.Last_Modified_User_ID = dtp.id

Note the "dtp" fields at the end of the SELECT. If you want to concatenate them, you can, but this will show them as separate fields.