LiBinfeng-01 commented on code in PR #43422:
URL: https://github.com/apache/doris/pull/43422#discussion_r1833650961


##########
regression-test/suites/nereids_p0/expression/fold_constant/fold_constant_numeric_arithmatic.groovy:
##########
@@ -409,4 +409,13 @@ test {
 
 //Additional cases for Xor, Conv, and other mathematical functions
     testFoldConst("SELECT CONV(-10, 10, 2) AS conv_invalid_base") //Conv with 
negative input (may be undefined)
+
+    // fix floor/ceil/round function return type with DecimalV3 input
+    testFoldConst("with cte as (select floor(300.343) order by 1 limit 1) 
select * from cte")
+    testFoldConst("with cte as (select round(300.343) order by 1 limit 1) 
select * from cte")
+    testFoldConst("with cte as (select ceil(300.343) order by 1 limit 1) 
select * from cte")
+
+    testFoldConst("with cte as (select floor(300.343, 2) order by 1 limit 1) 
select * from cte")
+    testFoldConst("with cte as (select round(300.343, 2) order by 1 limit 1) 
select * from cte")
+    testFoldConst("with cte as (select ceil(300.343, 2) order by 1 limit 1) 
select * from cte")

Review Comment:
   it make sense, added



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