coderfender commented on code in PR #2143:
URL: https://github.com/apache/datafusion-comet/pull/2143#discussion_r2274815404


##########
docs/source/user-guide/expressions.md:
##########
@@ -44,6 +44,15 @@ The following Spark expressions are currently available. Any 
known compatibility
 | IntegralDivide (`div`) | All operands are cast to DecimalType (in case the 
input type is not already decima type) with precision 19 and scale 0. Please 
set `spark.comet.cast.allowIncompatible` to `true` to enable DataFusion’s cast 
operation for LongType inputs. |
 | Remainder (`%`)        |                                                     
                                                                                
                                                                                
                          |
 
+## Binary Try Arithmetic
+
+| Expression | Notes                                                           
           |
+|------------|----------------------------------------------------------------------------|
+| `try_add`  | Adds operands (IntegerTypes only) or results NULL incase of 
overflow       |
+| `try_sub`  | Subtracts operands (IntegerTypes only) or results NULL incase 
of overflow  |
+| `try_mul`  | Multiplies operands (IntegerTypes only) or results NULL incase 
of overflow |
+| `try_div`  | Subtracts operands (IntegerTypes only) or results NULL incase 
of overflow  |

Review Comment:
   Thats a good question @kazuyukitanimura  . The only numeric datatypes spark 
supports with NULL on Overflow are IntegerTypes (int / long -> int32 /int64) . 
Along with that Spark supports try arithmetic for datetime literals as well but 
that isnt supported in comet yet and fallsback to spark



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