how to delete repeat text after concat

[lilyyangadsk]

hi, may i ask your help how do I only show solution group only one text  "PSEB" if after concat it is same text from two line by group order number. Currently it shows "PSEB,PSEB". 

[grazitti_sapna · Accepted solution]

Hello @lilyyangadsk, use the regex below on your group column.

\b(\w+,?),(?=.*\b\1)

Thanks!

[NexBK · Accepted solution]

Hello @lilyyangadsk, 

Use the Summarize Tool to work only on the "Solution Group" column.
First, Group by "Order Number" and "Solution Group". After that, concatenate "Solution Group" by "Order Number".
Finally, join based on Order Number.

[lilyyangadsk]

THANK YOU VERY MUCH, it works!

[lilyyangadsk]

may i ask where i can learn these  \b(\w+,?),(?=.*\b\1) that represent what? thank you