izveigor commented on code in PR #7348:
URL: https://github.com/apache/arrow-datafusion/pull/7348#discussion_r1300110602


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datafusion/physical-expr/src/array_expressions.rs:
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@@ -601,6 +601,22 @@ pub fn array_slice(args: &[ArrayRef]) -> Result<ArrayRef> {
     define_array_slice(list_array, key, extra_key, false)
 }
 
+pub fn array_pop_back(args: &[ArrayRef]) -> Result<ArrayRef> {

Review Comment:
   @tanruixiang Do you want to implement `array_pop_front` function (See the 
ticket: https://github.com/apache/arrow-datafusion/issues/6996)? It has the 
similar syntax and it's a quite improvement your contribution in the project.



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