Question

I have a mysql table below:

id   user_id   ticket 
1    39        56478939
2    51        42234951
3    40        56478940
4    52        67284952

Where ticket (for example for first row) = 564789 + 39 (user_id)
My request looks like:

SELECT CONCAT_WS(";", id, user_id, ticket) FROM `signals` 

And I will get:

1;39;56478939
2;51;42234951
...

How can I get this type of data using MYSQL request (remove from ticket user_id at the end of ticket):

1;39;564789
2;51;422349
...

The request should be fast enough:
Thanks you very much!

Answer 1

try this:

SELECT CONCAT_WS(";", id, user_id, LEFT(ticket,length(ticket)-length(user_id))) from table1;

FIDDLE DEMO