How do I filter data with upper case and lower case sensitive scenarios?

[athorat]

Is there a way to restrict this search with upper case and lower case scenarios?

index=aap_prod sourcetype="HDP:PROD:OOZIE"  
  (":start:] with user-retry state" OR "@end***]Action updated in DB!") 

When I use this @end***, it also returns results with END_IMPORT***, which is an event detail for failed jobs.

Two different search scenarios

[Yasaswy]

Hi , you can try something like
index=aap_prod sourcetype="HDP:PROD:OOZIE" (":start:] with user-retry state" OR CASE(@end***]Action updated in DB))