diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/ComputePrecisionForRound.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/ComputePrecisionForRound.java
index 36abfe5a06..4b57772ed2 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/ComputePrecisionForRound.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/ComputePrecisionForRound.java
@@ -20,7 +20,7 @@ package org.apache.doris.nereids.trees.expressions.functions;
 import org.apache.doris.catalog.FunctionSignature;
 import org.apache.doris.nereids.trees.expressions.Cast;
 import org.apache.doris.nereids.trees.expressions.Expression;
-import org.apache.doris.nereids.trees.expressions.literal.IntegerLiteral;
+import org.apache.doris.nereids.trees.expressions.literal.IntegerLikeLiteral;
 import org.apache.doris.nereids.types.DecimalV3Type;
 import org.apache.doris.nereids.types.coercion.Int32OrLessType;
 
@@ -34,7 +34,7 @@ public interface ComputePrecisionForRound extends ComputePrecision {
             DecimalV3Type decimalV3Type = DecimalV3Type.forType(getArgumentType(0));
             return signature.withArgumentType(0, decimalV3Type)
                     .withReturnType(DecimalV3Type.createDecimalV3Type(decimalV3Type.getPrecision(), 0));
-        } else if (arity() == 2 && getArgumentType(0).isDecimalV3Type()) {
+        } else if (arity() == 2 && signature.getArgType(0) instanceof DecimalV3Type) {
             DecimalV3Type decimalV3Type = DecimalV3Type.forType(getArgumentType(0));
             Expression floatLength = getArgument(1);
             Preconditions.checkArgument(floatLength.getDataType() instanceof Int32OrLessType
@@ -45,10 +45,11 @@ public interface ComputePrecisionForRound extends ComputePrecision {
 
             int scale;
             if (floatLength instanceof Cast) {
-                scale = ((IntegerLiteral) floatLength.child(0)).getIntValue();
+                scale = ((IntegerLikeLiteral) floatLength.child(0)).getIntValue();
             } else {
-                scale = ((IntegerLiteral) floatLength).getIntValue();
+                scale = ((IntegerLikeLiteral) floatLength).getIntValue();
             }
+            scale = Math.min(Math.max(scale, 0), decimalV3Type.getScale());
             return signature.withArgumentType(0, decimalV3Type)
                     .withReturnType(DecimalV3Type.createDecimalV3Type(decimalV3Type.getPrecision(), scale));
         } else {
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Ceil.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Ceil.java
index 7359aa2ca4..0e388c5db3 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Ceil.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Ceil.java
@@ -24,7 +24,9 @@ import org.apache.doris.nereids.trees.expressions.functions.ExplicitlyCastableSi
 import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
 import org.apache.doris.nereids.trees.expressions.shape.UnaryExpression;
 import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
+import org.apache.doris.nereids.types.DecimalV3Type;
 import org.apache.doris.nereids.types.DoubleType;
+import org.apache.doris.nereids.types.IntegerType;
 
 import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
@@ -38,7 +40,9 @@ public class Ceil extends ScalarFunction
         implements UnaryExpression, ExplicitlyCastableSignature, PropagateNullable, ComputePrecisionForRound {
 
     public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
-            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE)
+            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE),
+            FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD),
+            FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD, IntegerType.INSTANCE)
     );
 
     /**
@@ -48,13 +52,24 @@ public class Ceil extends ScalarFunction
         super("ceil", arg);
     }
 
+    /**
+     * constructor with 2 argument.
+     */
+    public Ceil(Expression arg0, Expression arg1) {
+        super("ceil", arg0, arg1);
+    }
+
     /**
      * withChildren.
      */
     @Override
     public Ceil withChildren(List<Expression> children) {
-        Preconditions.checkArgument(children.size() == 1);
-        return new Ceil(children.get(0));
+        Preconditions.checkArgument(children.size() == 1 || children.size() == 2);
+        if (children.size() == 1) {
+            return new Ceil(children.get(0));
+        } else {
+            return new Ceil(children.get(0), children.get(1));
+        }
     }
 
     @Override
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dceil.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dceil.java
index 7f08eef4cf..bb0f6f0216 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dceil.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dceil.java
@@ -24,7 +24,9 @@ import org.apache.doris.nereids.trees.expressions.functions.ExplicitlyCastableSi
 import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
 import org.apache.doris.nereids.trees.expressions.shape.UnaryExpression;
 import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
+import org.apache.doris.nereids.types.DecimalV3Type;
 import org.apache.doris.nereids.types.DoubleType;
+import org.apache.doris.nereids.types.IntegerType;
 
 import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
@@ -38,7 +40,9 @@ public class Dceil extends ScalarFunction
         implements UnaryExpression, ExplicitlyCastableSignature, PropagateNullable, ComputePrecisionForRound {
 
     public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
-            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE)
+            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE),
+            FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD),
+            FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD, IntegerType.INSTANCE)
     );
 
     /**
@@ -48,13 +52,24 @@ public class Dceil extends ScalarFunction
         super("dceil", arg);
     }
 
+    /**
+     * constructor with 2 arguments.
+     */
+    public Dceil(Expression arg0, Expression arg1) {
+        super("dceil", arg0, arg1);
+    }
+
     /**
      * withChildren.
      */
     @Override
     public Dceil withChildren(List<Expression> children) {
-        Preconditions.checkArgument(children.size() == 1);
-        return new Dceil(children.get(0));
+        Preconditions.checkArgument(children.size() == 1 || children.size() == 2);
+        if (children.size() == 1) {
+            return new Dceil(children.get(0));
+        } else {
+            return new Dceil(children.get(0), children.get(1));
+        }
     }
 
     @Override
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dfloor.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dfloor.java
index 10260662ee..ec2039e121 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dfloor.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dfloor.java
@@ -24,7 +24,9 @@ import org.apache.doris.nereids.trees.expressions.functions.ExplicitlyCastableSi
 import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
 import org.apache.doris.nereids.trees.expressions.shape.UnaryExpression;
 import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
+import org.apache.doris.nereids.types.DecimalV3Type;
 import org.apache.doris.nereids.types.DoubleType;
+import org.apache.doris.nereids.types.IntegerType;
 
 import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
@@ -38,8 +40,9 @@ public class Dfloor extends ScalarFunction
         implements UnaryExpression, ExplicitlyCastableSignature, PropagateNullable, ComputePrecisionForRound {
 
     public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
-            // TODO: decimal
-            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE)
+            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE),
+            FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD),
+            FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD, IntegerType.INSTANCE)
     );
 
     /**
@@ -49,13 +52,24 @@ public class Dfloor extends ScalarFunction
         super("dfloor", arg);
     }
 
+    /**
+     * constructor with 2 argument.
+     */
+    public Dfloor(Expression arg0, Expression arg1) {
+        super("dfloor", arg0, arg1);
+    }
+
     /**
      * withChildren.
      */
     @Override
     public Dfloor withChildren(List<Expression> children) {
-        Preconditions.checkArgument(children.size() == 1);
-        return new Dfloor(children.get(0));
+        Preconditions.checkArgument(children.size() == 1 || children.size() == 2);
+        if (children.size() == 1) {
+            return new Dfloor(children.get(0));
+        } else {
+            return new Dfloor(children.get(0), children.get(1));
+        }
     }
 
     @Override
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dround.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dround.java
index a4b3604abe..bb2502e8c9 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dround.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Dround.java
@@ -23,6 +23,7 @@ import org.apache.doris.nereids.trees.expressions.functions.ComputePrecisionForR
 import org.apache.doris.nereids.trees.expressions.functions.ExplicitlyCastableSignature;
 import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
 import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
+import org.apache.doris.nereids.types.DecimalV3Type;
 import org.apache.doris.nereids.types.DoubleType;
 import org.apache.doris.nereids.types.IntegerType;
 
@@ -38,9 +39,10 @@ public class Dround extends ScalarFunction
         implements ExplicitlyCastableSignature, PropagateNullable, ComputePrecisionForRound {
 
     public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
-            // TODO: decimal
             FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE),
-            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE, IntegerType.INSTANCE)
+            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE, IntegerType.INSTANCE),
+            FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD),
+            FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD, IntegerType.INSTANCE)
     );
 
     /**
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Floor.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Floor.java
index 380bb33431..9e9f2c7d7b 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Floor.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Floor.java
@@ -24,7 +24,9 @@ import org.apache.doris.nereids.trees.expressions.functions.ExplicitlyCastableSi
 import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
 import org.apache.doris.nereids.trees.expressions.shape.UnaryExpression;
 import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
+import org.apache.doris.nereids.types.DecimalV3Type;
 import org.apache.doris.nereids.types.DoubleType;
+import org.apache.doris.nereids.types.IntegerType;
 
 import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
@@ -38,7 +40,9 @@ public class Floor extends ScalarFunction
         implements UnaryExpression, ExplicitlyCastableSignature, PropagateNullable, ComputePrecisionForRound {
 
     public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
-            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE)
+            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE),
+            FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD),
+            FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD, IntegerType.INSTANCE)
     );
 
     /**
@@ -48,13 +52,24 @@ public class Floor extends ScalarFunction
         super("floor", arg);
     }
 
+    /**
+     * constructor with 2 argument.
+     */
+    public Floor(Expression arg0, Expression arg1) {
+        super("floor", arg0, arg1);
+    }
+
     /**
      * withChildren.
      */
     @Override
     public Floor withChildren(List<Expression> children) {
-        Preconditions.checkArgument(children.size() == 1);
-        return new Floor(children.get(0));
+        Preconditions.checkArgument(children.size() == 1 || children.size() == 2);
+        if (children.size() == 1) {
+            return new Floor(children.get(0));
+        } else {
+            return new Floor(children.get(0), children.get(1));
+        }
     }
 
     @Override
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Round.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Round.java
index 3ba213ab33..7f0e266acc 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Round.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Round.java
@@ -23,6 +23,7 @@ import org.apache.doris.nereids.trees.expressions.functions.ComputePrecisionForR
 import org.apache.doris.nereids.trees.expressions.functions.ExplicitlyCastableSignature;
 import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
 import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
+import org.apache.doris.nereids.types.DecimalV3Type;
 import org.apache.doris.nereids.types.DoubleType;
 import org.apache.doris.nereids.types.IntegerType;
 
@@ -39,7 +40,9 @@ public class Round extends ScalarFunction
 
     public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
             FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE),
-            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE, IntegerType.INSTANCE)
+            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE, IntegerType.INSTANCE),
+            FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD),
+            FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD, IntegerType.INSTANCE)
     );
 
     /**
@@ -61,8 +64,7 @@ public class Round extends ScalarFunction
      */
     @Override
     public Round withChildren(List<Expression> children) {
-        Preconditions.checkArgument(children.size() == 1
-                || children.size() == 2);
+        Preconditions.checkArgument(children.size() == 1 || children.size() == 2);
         if (children.size() == 1) {
             return new Round(children.get(0));
         } else {
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/RoundBankers.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/RoundBankers.java
index e8e36ea82a..5697ae277e 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/RoundBankers.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/RoundBankers.java
@@ -23,6 +23,7 @@ import org.apache.doris.nereids.trees.expressions.functions.ComputePrecisionForR
 import org.apache.doris.nereids.trees.expressions.functions.ExplicitlyCastableSignature;
 import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
 import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
+import org.apache.doris.nereids.types.DecimalV3Type;
 import org.apache.doris.nereids.types.DoubleType;
 import org.apache.doris.nereids.types.IntegerType;
 
@@ -39,7 +40,9 @@ public class RoundBankers extends ScalarFunction
 
     public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
             FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE),
-            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE, IntegerType.INSTANCE)
+            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE, IntegerType.INSTANCE),
+            FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD),
+            FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD, IntegerType.INSTANCE)
     );
 
     /**
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Truncate.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Truncate.java
index 022bf5cd1d..83af5293cd 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Truncate.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Truncate.java
@@ -24,6 +24,7 @@ import org.apache.doris.nereids.trees.expressions.functions.ExplicitlyCastableSi
 import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
 import org.apache.doris.nereids.trees.expressions.shape.BinaryExpression;
 import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
+import org.apache.doris.nereids.types.DecimalV3Type;
 import org.apache.doris.nereids.types.DoubleType;
 import org.apache.doris.nereids.types.IntegerType;
 
@@ -39,7 +40,8 @@ public class Truncate extends ScalarFunction
         implements BinaryExpression, ExplicitlyCastableSignature, PropagateNullable, ComputePrecisionForRound {
 
     public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
-            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE, IntegerType.INSTANCE)
+            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE, IntegerType.INSTANCE),
+            FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD, IntegerType.INSTANCE)
     );
 
     /**
diff --git a/regression-test/data/nereids_function_p0/scalar_function/C.out b/regression-test/data/nereids_function_p0/scalar_function/C.out
index 11db4ba493..607f08be34 100644
--- a/regression-test/data/nereids_function_p0/scalar_function/C.out
+++ b/regression-test/data/nereids_function_p0/scalar_function/C.out
@@ -57,6 +57,180 @@
 2.0
 2.0
 
+-- !sql_ceil_DecimalV3S1 --
+\N
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+
+-- !sql_ceil_DecimalV3S1_notnull --
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+
+-- !sql_ceil_DecimalV3S2 --
+\N
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+
+-- !sql_ceil_DecimalV3S2_notnull --
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+
+-- !sql_ceil_DecimalV3S3 --
+\N
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+
+-- !sql_ceil_DecimalV3S3_notnull --
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+
+-- !sql_ceil_DecimalV3S1_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_ceil_DecimalV3S1_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_ceil_DecimalV3S2_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_ceil_DecimalV3S2_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_ceil_DecimalV3S3_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_ceil_DecimalV3S3_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
 -- !sql_character_length_Varchar --
 4
 9
diff --git a/regression-test/data/nereids_function_p0/scalar_function/D.out b/regression-test/data/nereids_function_p0/scalar_function/D.out
index 6e093e17d0..48a586d5b7 100644
--- a/regression-test/data/nereids_function_p0/scalar_function/D.out
+++ b/regression-test/data/nereids_function_p0/scalar_function/D.out
@@ -2261,6 +2261,180 @@ Monday
 2.0
 2.0
 
+-- !sql_dceil_DecimalV3S1 --
+\N
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+
+-- !sql_dceil_DecimalV3S1_notnull --
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+
+-- !sql_dceil_DecimalV3S2 --
+\N
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+
+-- !sql_dceil_DecimalV3S2_notnull --
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+
+-- !sql_dceil_DecimalV3S3 --
+\N
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+
+-- !sql_dceil_DecimalV3S3_notnull --
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+
+-- !sql_dceil_DecimalV3S1_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_dceil_DecimalV3S1_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_dceil_DecimalV3S2_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_dceil_DecimalV3S2_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_dceil_DecimalV3S3_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_dceil_DecimalV3S3_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
 -- !sql_degrees_Double --
 \N
 5.729577951308232
@@ -2348,6 +2522,180 @@ Monday
 1.0
 1.0
 
+-- !sql_dfloor_DecimalV3S1 --
+\N
+0
+0
+0
+0
+0
+0
+0
+0
+0
+1
+1
+1
+
+-- !sql_dfloor_DecimalV3S1_notnull --
+0
+0
+0
+0
+0
+0
+0
+0
+0
+1
+1
+1
+
+-- !sql_dfloor_DecimalV3S2 --
+\N
+0
+0
+0
+0
+0
+0
+0
+0
+0
+1
+1
+1
+
+-- !sql_dfloor_DecimalV3S2_notnull --
+0
+0
+0
+0
+0
+0
+0
+0
+0
+1
+1
+1
+
+-- !sql_dfloor_DecimalV3S3 --
+\N
+0
+0
+0
+0
+0
+0
+0
+0
+0
+1
+1
+1
+
+-- !sql_dfloor_DecimalV3S3_notnull --
+0
+0
+0
+0
+0
+0
+0
+0
+0
+1
+1
+1
+
+-- !sql_dfloor_DecimalV3S1_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_dfloor_DecimalV3S1_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_dfloor_DecimalV3S2_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_dfloor_DecimalV3S2_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_dfloor_DecimalV3S3_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_dfloor_DecimalV3S3_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
 -- !sql_digital_masking_BigInt --
 \N
 1****1
@@ -2580,6 +2928,180 @@ Monday
 1.1
 1.2
 
+-- !sql_dround_DecimalV3S1 --
+\N
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+1
+
+-- !sql_dround_DecimalV3S1_notnull --
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+1
+
+-- !sql_dround_DecimalV3S2 --
+\N
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+1
+
+-- !sql_dround_DecimalV3S2_notnull --
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+1
+
+-- !sql_dround_DecimalV3S3 --
+\N
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+1
+
+-- !sql_dround_DecimalV3S3_notnull --
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+1
+
+-- !sql_dround_DecimalV3S1_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_dround_DecimalV3S1_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_dround_DecimalV3S2_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_dround_DecimalV3S2_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_dround_DecimalV3S3_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_dround_DecimalV3S3_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
 -- !sql_dsqrt_Double --
 \N
 0.31622776601683794
diff --git a/regression-test/data/nereids_function_p0/scalar_function/F.out b/regression-test/data/nereids_function_p0/scalar_function/F.out
index f26199f4e9..2009560233 100644
--- a/regression-test/data/nereids_function_p0/scalar_function/F.out
+++ b/regression-test/data/nereids_function_p0/scalar_function/F.out
@@ -434,6 +434,180 @@
 1.0
 1.0
 
+-- !sql_floor_DecimalV3S1 --
+\N
+0
+0
+0
+0
+0
+0
+0
+0
+0
+1
+1
+1
+
+-- !sql_floor_DecimalV3S1_notnull --
+0
+0
+0
+0
+0
+0
+0
+0
+0
+1
+1
+1
+
+-- !sql_floor_DecimalV3S2 --
+\N
+0
+0
+0
+0
+0
+0
+0
+0
+0
+1
+1
+1
+
+-- !sql_floor_DecimalV3S2_notnull --
+0
+0
+0
+0
+0
+0
+0
+0
+0
+1
+1
+1
+
+-- !sql_floor_DecimalV3S3 --
+\N
+0
+0
+0
+0
+0
+0
+0
+0
+0
+1
+1
+1
+
+-- !sql_floor_DecimalV3S3_notnull --
+0
+0
+0
+0
+0
+0
+0
+0
+0
+1
+1
+1
+
+-- !sql_floor_DecimalV3S1_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_floor_DecimalV3S1_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_floor_DecimalV3S2_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_floor_DecimalV3S2_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_floor_DecimalV3S3_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_floor_DecimalV3S3_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
 -- !sql_fmod_Float_Float --
 \N
 0.0
diff --git a/regression-test/data/nereids_function_p0/scalar_function/R.out b/regression-test/data/nereids_function_p0/scalar_function/R.out
index 3ca4942ba2..3145c2c6dc 100644
--- a/regression-test/data/nereids_function_p0/scalar_function/R.out
+++ b/regression-test/data/nereids_function_p0/scalar_function/R.out
@@ -492,6 +492,180 @@ string3
 1.1
 1.2
 
+-- !sql_round_DecimalV3S1 --
+\N
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+1
+
+-- !sql_round_DecimalV3S1_notnull --
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+1
+
+-- !sql_round_DecimalV3S2 --
+\N
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+1
+
+-- !sql_round_DecimalV3S2_notnull --
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+1
+
+-- !sql_round_DecimalV3S3 --
+\N
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+1
+
+-- !sql_round_DecimalV3S3_notnull --
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+1
+
+-- !sql_round_DecimalV3S1_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_round_DecimalV3S1_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_round_DecimalV3S2_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_round_DecimalV3S2_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_round_DecimalV3S3_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_round_DecimalV3S3_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
 -- !sql_round_bankers_Double --
 \N
 0.0
@@ -550,6 +724,180 @@ string3
 1.1
 1.2
 
+-- !sql_round_bankers_DecimalV3S1 --
+\N
+0
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+
+-- !sql_round_bankers_DecimalV3S1_notnull --
+0
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+
+-- !sql_round_bankers_DecimalV3S2 --
+\N
+0
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+
+-- !sql_round_bankers_DecimalV3S2_notnull --
+0
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+
+-- !sql_round_bankers_DecimalV3S3 --
+\N
+0
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+
+-- !sql_round_bankers_DecimalV3S3_notnull --
+0
+0
+0
+0
+0
+1
+1
+1
+1
+1
+1
+1
+
+-- !sql_round_bankers_DecimalV3S1_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_round_bankers_DecimalV3S1_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_round_bankers_DecimalV3S2_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_round_bankers_DecimalV3S2_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_round_bankers_DecimalV3S3_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_round_bankers_DecimalV3S3_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
 -- !sql_rpad_Varchar_Integer_Varchar --
 \N
 v
diff --git a/regression-test/data/nereids_function_p0/scalar_function/T.out b/regression-test/data/nereids_function_p0/scalar_function/T.out
index dac93dce42..028d20a7d9 100644
--- a/regression-test/data/nereids_function_p0/scalar_function/T.out
+++ b/regression-test/data/nereids_function_p0/scalar_function/T.out
@@ -811,3 +811,90 @@ string3
 1.1
 1.2
 
+-- !sql_truncate_DecimalV3S1_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_truncate_DecimalV3S1_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_truncate_DecimalV3S2_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_truncate_DecimalV3S2_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_truncate_DecimalV3S3_Int --
+\N
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
+-- !sql_truncate_DecimalV3S3_Int_notnull --
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+1.0
+1.1
+1.2
+
diff --git a/regression-test/suites/nereids_function_p0/scalar_function/C.groovy b/regression-test/suites/nereids_function_p0/scalar_function/C.groovy
index ea5e15cd63..e6b124e9a3 100644
--- a/regression-test/suites/nereids_function_p0/scalar_function/C.groovy
+++ b/regression-test/suites/nereids_function_p0/scalar_function/C.groovy
@@ -23,6 +23,18 @@ suite("nereids_scalar_fn_C") {
 	qt_sql_cbrt_Double_notnull "select cbrt(kdbl) from fn_test_not_nullable order by kdbl"
 	qt_sql_ceil_Double "select ceil(kdbl) from fn_test order by kdbl"
 	qt_sql_ceil_Double_notnull "select ceil(kdbl) from fn_test_not_nullable order by kdbl"
+	qt_sql_ceil_DecimalV3S1 "select ceil(kdcmlv3s1) from fn_test order by kdcmlv3s1"
+	qt_sql_ceil_DecimalV3S1_notnull "select ceil(kdcmlv3s1) from fn_test_not_nullable order by kdcmlv3s1"
+	qt_sql_ceil_DecimalV3S2 "select ceil(kdcmlv3s2) from fn_test order by kdcmlv3s2"
+	qt_sql_ceil_DecimalV3S2_notnull "select ceil(kdcmlv3s2) from fn_test_not_nullable order by kdcmlv3s2"
+	qt_sql_ceil_DecimalV3S3 "select ceil(kdcmlv3s3) from fn_test order by kdcmlv3s3"
+	qt_sql_ceil_DecimalV3S3_notnull "select ceil(kdcmlv3s3) from fn_test_not_nullable order by kdcmlv3s3"
+	qt_sql_ceil_DecimalV3S1_Int "select ceil(kdcmlv3s1, 1) from fn_test order by kdcmlv3s1"
+	qt_sql_ceil_DecimalV3S1_Int_notnull "select ceil(kdcmlv3s1, 1) from fn_test_not_nullable order by kdcmlv3s1"
+	qt_sql_ceil_DecimalV3S2_Int "select ceil(kdcmlv3s2, 1) from fn_test order by kdcmlv3s2"
+	qt_sql_ceil_DecimalV3S2_Int_notnull "select ceil(kdcmlv3s2, 1) from fn_test_not_nullable order by kdcmlv3s2"
+	qt_sql_ceil_DecimalV3S3_Int "select ceil(kdcmlv3s3, 1) from fn_test order by kdcmlv3s3"
+	qt_sql_ceil_DecimalV3S3_Int_notnull "select ceil(kdcmlv3s3, 1) from fn_test_not_nullable order by kdcmlv3s3"
 	qt_sql_character_length_Varchar "select character_length(kvchrs1) from fn_test order by kvchrs1"
 	qt_sql_character_length_Varchar_notnull "select character_length(kvchrs1) from fn_test_not_nullable order by kvchrs1"
 	qt_sql_character_length_String "select character_length(kstr) from fn_test order by kstr"
@@ -81,4 +93,4 @@ suite("nereids_scalar_fn_C") {
 	qt_sql_cos_Double_notnull "select cos(kdbl) from fn_test_not_nullable order by kdbl"
 	sql "select current_user() from fn_test"
 	sql "select current_user() from fn_test_not_nullable"
-}
\ No newline at end of file
+}
diff --git a/regression-test/suites/nereids_function_p0/scalar_function/D.groovy b/regression-test/suites/nereids_function_p0/scalar_function/D.groovy
index caa3747867..6b179db073 100644
--- a/regression-test/suites/nereids_function_p0/scalar_function/D.groovy
+++ b/regression-test/suites/nereids_function_p0/scalar_function/D.groovy
@@ -177,12 +177,36 @@ suite("nereids_scalar_fn_D") {
 	qt_sql_days_sub_DateV2_Integer_notnull "select days_sub(kdtv2, kint) from fn_test_not_nullable order by kdtv2, kint"
 	qt_sql_dceil_Double "select dceil(kdbl) from fn_test order by kdbl"
 	qt_sql_dceil_Double_notnull "select dceil(kdbl) from fn_test_not_nullable order by kdbl"
+	qt_sql_dceil_DecimalV3S1 "select dceil(kdcmlv3s1) from fn_test order by kdcmlv3s1"
+	qt_sql_dceil_DecimalV3S1_notnull "select dceil(kdcmlv3s1) from fn_test_not_nullable order by kdcmlv3s1"
+	qt_sql_dceil_DecimalV3S2 "select dceil(kdcmlv3s2) from fn_test order by kdcmlv3s2"
+	qt_sql_dceil_DecimalV3S2_notnull "select dceil(kdcmlv3s2) from fn_test_not_nullable order by kdcmlv3s2"
+	qt_sql_dceil_DecimalV3S3 "select dceil(kdcmlv3s3) from fn_test order by kdcmlv3s3"
+	qt_sql_dceil_DecimalV3S3_notnull "select dceil(kdcmlv3s3) from fn_test_not_nullable order by kdcmlv3s3"
+	qt_sql_dceil_DecimalV3S1_Int "select dceil(kdcmlv3s1, 1) from fn_test order by kdcmlv3s1"
+	qt_sql_dceil_DecimalV3S1_Int_notnull "select dceil(kdcmlv3s1, 1) from fn_test_not_nullable order by kdcmlv3s1"
+	qt_sql_dceil_DecimalV3S2_Int "select dceil(kdcmlv3s2, 1) from fn_test order by kdcmlv3s2"
+	qt_sql_dceil_DecimalV3S2_Int_notnull "select dceil(kdcmlv3s2, 1) from fn_test_not_nullable order by kdcmlv3s2"
+	qt_sql_dceil_DecimalV3S3_Int "select dceil(kdcmlv3s3, 1) from fn_test order by kdcmlv3s3"
+	qt_sql_dceil_DecimalV3S3_Int_notnull "select dceil(kdcmlv3s3, 1) from fn_test_not_nullable order by kdcmlv3s3"
 	qt_sql_degrees_Double "select degrees(kdbl) from fn_test order by kdbl"
 	qt_sql_degrees_Double_notnull "select degrees(kdbl) from fn_test_not_nullable order by kdbl"
 	qt_sql_dexp_Double "select dexp(kdbl) from fn_test order by kdbl"
 	qt_sql_dexp_Double_notnull "select dexp(kdbl) from fn_test_not_nullable order by kdbl"
 	qt_sql_dfloor_Double "select dfloor(kdbl) from fn_test order by kdbl"
 	qt_sql_dfloor_Double_notnull "select dfloor(kdbl) from fn_test_not_nullable order by kdbl"
+	qt_sql_dfloor_DecimalV3S1 "select dfloor(kdcmlv3s1) from fn_test order by kdcmlv3s1"
+	qt_sql_dfloor_DecimalV3S1_notnull "select dfloor(kdcmlv3s1) from fn_test_not_nullable order by kdcmlv3s1"
+	qt_sql_dfloor_DecimalV3S2 "select dfloor(kdcmlv3s2) from fn_test order by kdcmlv3s2"
+	qt_sql_dfloor_DecimalV3S2_notnull "select dfloor(kdcmlv3s2) from fn_test_not_nullable order by kdcmlv3s2"
+	qt_sql_dfloor_DecimalV3S3 "select dfloor(kdcmlv3s3) from fn_test order by kdcmlv3s3"
+	qt_sql_dfloor_DecimalV3S3_notnull "select dfloor(kdcmlv3s3) from fn_test_not_nullable order by kdcmlv3s3"
+	qt_sql_dfloor_DecimalV3S1_Int "select dfloor(kdcmlv3s1, 1) from fn_test order by kdcmlv3s1"
+	qt_sql_dfloor_DecimalV3S1_Int_notnull "select dfloor(kdcmlv3s1, 1) from fn_test_not_nullable order by kdcmlv3s1"
+	qt_sql_dfloor_DecimalV3S2_Int "select dfloor(kdcmlv3s2, 1) from fn_test order by kdcmlv3s2"
+	qt_sql_dfloor_DecimalV3S2_Int_notnull "select dfloor(kdcmlv3s2, 1) from fn_test_not_nullable order by kdcmlv3s2"
+	qt_sql_dfloor_DecimalV3S3_Int "select dfloor(kdcmlv3s3, 1) from fn_test order by kdcmlv3s3"
+	qt_sql_dfloor_DecimalV3S3_Int_notnull "select dfloor(kdcmlv3s3, 1) from fn_test_not_nullable order by kdcmlv3s3"
 	qt_sql_digital_masking_BigInt "select digital_masking(kbint) from fn_test order by kbint"
 	qt_sql_digital_masking_BigInt_notnull "select digital_masking(kbint) from fn_test_not_nullable order by kbint"
 	qt_sql_dlog1_Double "select dlog1(kdbl) from fn_test order by kdbl"
@@ -199,6 +223,18 @@ suite("nereids_scalar_fn_D") {
 	qt_sql_dround_Double_notnull "select dround(kdbl) from fn_test_not_nullable order by kdbl"
 	qt_sql_dround_Double_Integer "select dround(kdbl, 2) from fn_test order by kdbl"
 	qt_sql_dround_Double_Integer_notnull "select dround(kdbl, 2) from fn_test_not_nullable order by kdbl"
+	qt_sql_dround_DecimalV3S1 "select dround(kdcmlv3s1) from fn_test order by kdcmlv3s1"
+	qt_sql_dround_DecimalV3S1_notnull "select dround(kdcmlv3s1) from fn_test_not_nullable order by kdcmlv3s1"
+	qt_sql_dround_DecimalV3S2 "select dround(kdcmlv3s2) from fn_test order by kdcmlv3s2"
+	qt_sql_dround_DecimalV3S2_notnull "select dround(kdcmlv3s2) from fn_test_not_nullable order by kdcmlv3s2"
+	qt_sql_dround_DecimalV3S3 "select dround(kdcmlv3s3) from fn_test order by kdcmlv3s3"
+	qt_sql_dround_DecimalV3S3_notnull "select dround(kdcmlv3s3) from fn_test_not_nullable order by kdcmlv3s3"
+	qt_sql_dround_DecimalV3S1_Int "select dround(kdcmlv3s1, 1) from fn_test order by kdcmlv3s1"
+	qt_sql_dround_DecimalV3S1_Int_notnull "select dround(kdcmlv3s1, 1) from fn_test_not_nullable order by kdcmlv3s1"
+	qt_sql_dround_DecimalV3S2_Int "select dround(kdcmlv3s2, 1) from fn_test order by kdcmlv3s2"
+	qt_sql_dround_DecimalV3S2_Int_notnull "select dround(kdcmlv3s2, 1) from fn_test_not_nullable order by kdcmlv3s2"
+	qt_sql_dround_DecimalV3S3_Int "select dround(kdcmlv3s3, 1) from fn_test order by kdcmlv3s3"
+	qt_sql_dround_DecimalV3S3_Int_notnull "select dround(kdcmlv3s3, 1) from fn_test_not_nullable order by kdcmlv3s3"
 	qt_sql_dsqrt_Double "select dsqrt(kdbl) from fn_test order by kdbl"
 	qt_sql_dsqrt_Double_notnull "select dsqrt(kdbl) from fn_test_not_nullable order by kdbl"
-}
\ No newline at end of file
+}
diff --git a/regression-test/suites/nereids_function_p0/scalar_function/F.groovy b/regression-test/suites/nereids_function_p0/scalar_function/F.groovy
index 0071b97ca3..a89f3dc9ea 100644
--- a/regression-test/suites/nereids_function_p0/scalar_function/F.groovy
+++ b/regression-test/suites/nereids_function_p0/scalar_function/F.groovy
@@ -49,6 +49,18 @@ suite("nereids_scalar_fn_F") {
 	qt_sql_find_in_set_String_String_notnull "select find_in_set(kstr, kstr) from fn_test_not_nullable order by kstr, kstr"
 	qt_sql_floor_Double "select floor(kdbl) from fn_test order by kdbl"
 	qt_sql_floor_Double_notnull "select floor(kdbl) from fn_test_not_nullable order by kdbl"
+	qt_sql_floor_DecimalV3S1 "select floor(kdcmlv3s1) from fn_test order by kdcmlv3s1"
+	qt_sql_floor_DecimalV3S1_notnull "select floor(kdcmlv3s1) from fn_test_not_nullable order by kdcmlv3s1"
+	qt_sql_floor_DecimalV3S2 "select floor(kdcmlv3s2) from fn_test order by kdcmlv3s2"
+	qt_sql_floor_DecimalV3S2_notnull "select floor(kdcmlv3s2) from fn_test_not_nullable order by kdcmlv3s2"
+	qt_sql_floor_DecimalV3S3 "select floor(kdcmlv3s3) from fn_test order by kdcmlv3s3"
+	qt_sql_floor_DecimalV3S3_notnull "select floor(kdcmlv3s3) from fn_test_not_nullable order by kdcmlv3s3"
+	qt_sql_floor_DecimalV3S1_Int "select floor(kdcmlv3s1, 1) from fn_test order by kdcmlv3s1"
+	qt_sql_floor_DecimalV3S1_Int_notnull "select floor(kdcmlv3s1, 1) from fn_test_not_nullable order by kdcmlv3s1"
+	qt_sql_floor_DecimalV3S2_Int "select floor(kdcmlv3s2, 1) from fn_test order by kdcmlv3s2"
+	qt_sql_floor_DecimalV3S2_Int_notnull "select floor(kdcmlv3s2, 1) from fn_test_not_nullable order by kdcmlv3s2"
+	qt_sql_floor_DecimalV3S3_Int "select floor(kdcmlv3s3, 1) from fn_test order by kdcmlv3s3"
+	qt_sql_floor_DecimalV3S3_Int_notnull "select floor(kdcmlv3s3, 1) from fn_test_not_nullable order by kdcmlv3s3"
 	qt_sql_fmod_Float_Float "select fmod(kfloat, kfloat) from fn_test order by kfloat, kfloat"
 	qt_sql_fmod_Float_Float_notnull "select fmod(kfloat, kfloat) from fn_test_not_nullable order by kfloat, kfloat"
 	qt_sql_fmod_Double_Double "select fmod(kdbl, kdbl) from fn_test order by kdbl, kdbl"
@@ -67,4 +79,4 @@ suite("nereids_scalar_fn_F") {
 	qt_sql_from_unixtime_Integer_Varchar_notnull "select from_unixtime(kint, 'varchar') from fn_test_not_nullable order by kint"
 	qt_sql_from_unixtime_Integer_String "select from_unixtime(kint, 'string') from fn_test order by kint"
 	qt_sql_from_unixtime_Integer_String_notnull "select from_unixtime(kint, 'string') from fn_test_not_nullable order by kint"
-}
\ No newline at end of file
+}
diff --git a/regression-test/suites/nereids_function_p0/scalar_function/R.groovy b/regression-test/suites/nereids_function_p0/scalar_function/R.groovy
index 0c09db41f5..9c5c8dce9b 100644
--- a/regression-test/suites/nereids_function_p0/scalar_function/R.groovy
+++ b/regression-test/suites/nereids_function_p0/scalar_function/R.groovy
@@ -57,10 +57,34 @@ suite("nereids_scalar_fn_R") {
 	qt_sql_round_Double_notnull "select round(kdbl) from fn_test_not_nullable order by kdbl"
 	qt_sql_round_Double_Integer "select round(kdbl, 2) from fn_test order by kdbl"
 	qt_sql_round_Double_Integer_notnull "select round(kdbl, 2) from fn_test_not_nullable order by kdbl"
+	qt_sql_round_DecimalV3S1 "select round(kdcmlv3s1) from fn_test order by kdcmlv3s1"
+	qt_sql_round_DecimalV3S1_notnull "select round(kdcmlv3s1) from fn_test_not_nullable order by kdcmlv3s1"
+	qt_sql_round_DecimalV3S2 "select round(kdcmlv3s2) from fn_test order by kdcmlv3s2"
+	qt_sql_round_DecimalV3S2_notnull "select round(kdcmlv3s2) from fn_test_not_nullable order by kdcmlv3s2"
+	qt_sql_round_DecimalV3S3 "select round(kdcmlv3s3) from fn_test order by kdcmlv3s3"
+	qt_sql_round_DecimalV3S3_notnull "select round(kdcmlv3s3) from fn_test_not_nullable order by kdcmlv3s3"
+	qt_sql_round_DecimalV3S1_Int "select round(kdcmlv3s1, 1) from fn_test order by kdcmlv3s1"
+	qt_sql_round_DecimalV3S1_Int_notnull "select round(kdcmlv3s1, 1) from fn_test_not_nullable order by kdcmlv3s1"
+	qt_sql_round_DecimalV3S2_Int "select round(kdcmlv3s2, 1) from fn_test order by kdcmlv3s2"
+	qt_sql_round_DecimalV3S2_Int_notnull "select round(kdcmlv3s2, 1) from fn_test_not_nullable order by kdcmlv3s2"
+	qt_sql_round_DecimalV3S3_Int "select round(kdcmlv3s3, 1) from fn_test order by kdcmlv3s3"
+	qt_sql_round_DecimalV3S3_Int_notnull "select round(kdcmlv3s3, 1) from fn_test_not_nullable order by kdcmlv3s3"
 	qt_sql_round_bankers_Double "select round_bankers(kdbl) from fn_test order by kdbl"
 	qt_sql_round_bankers_Double_notnull "select round_bankers(kdbl) from fn_test_not_nullable order by kdbl"
 	qt_sql_round_bankers_Double_Integer "select round_bankers(kdbl, 2) from fn_test order by kdbl"
 	qt_sql_round_bankers_Double_Integer_notnull "select round_bankers(kdbl, 2) from fn_test_not_nullable order by kdbl"
+	qt_sql_round_bankers_DecimalV3S1 "select round_bankers(kdcmlv3s1) from fn_test order by kdcmlv3s1"
+	qt_sql_round_bankers_DecimalV3S1_notnull "select round_bankers(kdcmlv3s1) from fn_test_not_nullable order by kdcmlv3s1"
+	qt_sql_round_bankers_DecimalV3S2 "select round_bankers(kdcmlv3s2) from fn_test order by kdcmlv3s2"
+	qt_sql_round_bankers_DecimalV3S2_notnull "select round_bankers(kdcmlv3s2) from fn_test_not_nullable order by kdcmlv3s2"
+	qt_sql_round_bankers_DecimalV3S3 "select round_bankers(kdcmlv3s3) from fn_test order by kdcmlv3s3"
+	qt_sql_round_bankers_DecimalV3S3_notnull "select round_bankers(kdcmlv3s3) from fn_test_not_nullable order by kdcmlv3s3"
+	qt_sql_round_bankers_DecimalV3S1_Int "select round_bankers(kdcmlv3s1, 1) from fn_test order by kdcmlv3s1"
+	qt_sql_round_bankers_DecimalV3S1_Int_notnull "select round_bankers(kdcmlv3s1, 1) from fn_test_not_nullable order by kdcmlv3s1"
+	qt_sql_round_bankers_DecimalV3S2_Int "select round_bankers(kdcmlv3s2, 1) from fn_test order by kdcmlv3s2"
+	qt_sql_round_bankers_DecimalV3S2_Int_notnull "select round_bankers(kdcmlv3s2, 1) from fn_test_not_nullable order by kdcmlv3s2"
+	qt_sql_round_bankers_DecimalV3S3_Int "select round_bankers(kdcmlv3s3, 1) from fn_test order by kdcmlv3s3"
+	qt_sql_round_bankers_DecimalV3S3_Int_notnull "select round_bankers(kdcmlv3s3, 1) from fn_test_not_nullable order by kdcmlv3s3"
 	qt_sql_rpad_Varchar_Integer_Varchar "select rpad(kvchrs1, kint, kvchrs1) from fn_test order by kvchrs1, kint, kvchrs1"
 	qt_sql_rpad_Varchar_Integer_Varchar_notnull "select rpad(kvchrs1, kint, kvchrs1) from fn_test_not_nullable order by kvchrs1, kint, kvchrs1"
 	qt_sql_rpad_String_Integer_String "select rpad(kstr, kint, kstr) from fn_test order by kstr, kint, kstr"
@@ -93,4 +117,4 @@ suite("nereids_scalar_fn_R") {
 	sql "select cast(running_difference(kdtm) as string) from fn_test order by kdtm"
 	sql "select cast(running_difference(kdtmv2s1) as string) from fn_test order by kdtmv2s1"
 	sql "select cast(running_difference(kdtmv2s1) as string) from fn_test order by kdtmv2s1"
-}
\ No newline at end of file
+}
diff --git a/regression-test/suites/nereids_function_p0/scalar_function/T.groovy b/regression-test/suites/nereids_function_p0/scalar_function/T.groovy
index 701161f452..e47878b442 100644
--- a/regression-test/suites/nereids_function_p0/scalar_function/T.groovy
+++ b/regression-test/suites/nereids_function_p0/scalar_function/T.groovy
@@ -75,4 +75,10 @@ suite("nereids_scalar_fn_T") {
 	qt_sql_trim_String_notnull "select trim(kstr) from fn_test_not_nullable order by kstr"
 	qt_sql_truncate_Double_Integer "select truncate(kdbl, 2) from fn_test order by kdbl"
 	qt_sql_truncate_Double_Integer_notnull "select truncate(kdbl, 2) from fn_test_not_nullable order by kdbl"
-}
\ No newline at end of file
+	qt_sql_truncate_DecimalV3S1_Int "select truncate(kdcmlv3s1, 1) from fn_test order by kdcmlv3s1"
+	qt_sql_truncate_DecimalV3S1_Int_notnull "select truncate(kdcmlv3s1, 1) from fn_test_not_nullable order by kdcmlv3s1"
+	qt_sql_truncate_DecimalV3S2_Int "select truncate(kdcmlv3s2, 1) from fn_test order by kdcmlv3s2"
+	qt_sql_truncate_DecimalV3S2_Int_notnull "select truncate(kdcmlv3s2, 1) from fn_test_not_nullable order by kdcmlv3s2"
+	qt_sql_truncate_DecimalV3S3_Int "select truncate(kdcmlv3s3, 1) from fn_test order by kdcmlv3s3"
+	qt_sql_truncate_DecimalV3S3_Int_notnull "select truncate(kdcmlv3s3, 1) from fn_test_not_nullable order by kdcmlv3s3"
+}