surawut-jirasaktavee commented on PR #59422:
URL: https://github.com/apache/spark/pull/59422#issuecomment-6186665077

   Thanks for the re-review! You're right about the binding policy. I 
reproduced the view issue locally: I added a test that creates a persisted view 
calling `regexp_instr(..., 1)` and sets 
`spark.sql.legacy.regexpInstrIgnoreGroupIndex=true` in the session. Without a 
binding policy, it failed (expected `[1]`, got `[2]`), so the legacy flag had 
no effect inside the view, as you described.
   
   I'm adding `.withBindingPolicy(ConfigBindingPolicy.SESSION)` to the config, 
together with this view test, and will update the PR description to describe 
the flag and the new tests. I'll push the fix shortly.
   


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