How can I get auxiliary column more then one

Question

1.00/5 (1 vote)

See more:

in this query how can i get 2-3 columns?

but not use join or unıon

"SELECT A.*,(SELECT COL1,COL2,COL3 FROM EATTM001 WHERE COL2=A.COL2)  FROM SYS20.EATTM002 A "

What I have tried:

"SELECT A.*,(SELECT COL1 FROM EATTM001 WHERE COL2=A.COL2)  FROM SYS20.EATTM002 A "

Posted 7-Sep-20 9:27am

Member 14588284

Updated 7-Sep-20 10:33am

Add a Solution

Comments

Sandeep Mewara 7-Sep-20 15:48pm

Any specific reason on Why no join when you want data from two tables and they have a common column?

Member 14588284 7-Sep-20 16:07pm

because maybe in second table there is no equal value in col2 first table col2 value

Sandeep Mewara 7-Sep-20 16:30pm

That does not qualify for LEFT/RIGHT outer join?

Member 14588284 8-Sep-20 2:00am

Thanks, İ didnt use it before :)

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)

Sandeep Mewara · Accepted Answer · 2020-09-07T10:34:00

Solution 1

Based on your comment, I propose you use LEFT OUTER JOIN:

Quote[^]:
The LEFT JOIN keyword returns all records from the left table (table1), and the matched records from the right table (table2). The result is NULL from the right side, if there is no match

Example:

SQL

SELECT EATTM002.*, EATTM001.*
FROM EATTM002
LEFT JOIN EATTM001 ON EATTM001.COL2 = EATTM002.COL2

All from EATTM002 and matching ones for EATTM001 will be retrieved.

Posted 7-Sep-20 10:34am

Sandeep Mewara

Updated 7-Sep-20 10:36am

v3

Comments

Member 14588284 8-Sep-20 2:01am

Thanks, İ didnt use it before :)

Member 14588284 8-Sep-20 17:26pm

Can i get sum of a column with left joın?

Sandeep Mewara 9-Sep-20 1:13am

Yes. https://learnsql.com/blog/introduction-using-aggregate-functions-joins/