diff --git a/docs/ppl-lang/PPL-Example-Commands.md b/docs/ppl-lang/PPL-Example-Commands.md
index e780f688d..409b128c9 100644
--- a/docs/ppl-lang/PPL-Example-Commands.md
+++ b/docs/ppl-lang/PPL-Example-Commands.md
@@ -58,17 +58,10 @@ _- **Limitation: new field added by eval command with a function cannot be dropp
 - `source = table | where a not in (1, 2, 3) | fields a,b,c`
 - `source = table | where a between 1 and 4` - Note: This returns a >= 1 and a <= 4, i.e. [1, 4]
 - `source = table | where b not between '2024-09-10' and '2025-09-10'` - Note: This returns b >= '2024-09-10' and b <= '2025-09-10'
-- `source = table | where cidrmatch(ip, '192.169.1.0/24')` 
+- `source = table | where cidrmatch(ip, '192.169.1.0/24')`
 - `source = table | where cidrmatch(ipv6, '2003:db8::/32')`
 - `source = table | trendline sma(2, temperature) as temp_trend`
 
-#### **IP related queries**
-[See additional command details](functions/ppl-ip.md)
-
-- `source = table | where cidrmatch(ip, '192.169.1.0/24')`
-- `source = table | where isV6 = false and isValid = true and cidrmatch(ipAddress, '192.168.1.0/24')`
-- `source = table | where isV6 = true | eval inRange = case(cidrmatch(ipAddress, '2003:db8::/32'), 'in' else 'out') | fields ip, inRange`
-
 ```sql
  source = table | eval status_category =
  case(a >= 200 AND a < 300, 'Success',
diff --git a/ppl-spark-integration/src/main/java/org/opensearch/sql/ppl/CatalystExpressionVisitor.java b/ppl-spark-integration/src/main/java/org/opensearch/sql/ppl/CatalystExpressionVisitor.java
index a0506ceee..69a89b83a 100644
--- a/ppl-spark-integration/src/main/java/org/opensearch/sql/ppl/CatalystExpressionVisitor.java
+++ b/ppl-spark-integration/src/main/java/org/opensearch/sql/ppl/CatalystExpressionVisitor.java
@@ -5,7 +5,6 @@
 
 package org.opensearch.sql.ppl;
 
-import org.apache.spark.sql.catalyst.analysis.UnresolvedAttribute;
 import org.apache.spark.sql.catalyst.analysis.UnresolvedAttribute$;
 import org.apache.spark.sql.catalyst.analysis.UnresolvedRelation;
 import org.apache.spark.sql.catalyst.analysis.UnresolvedStar$;
@@ -16,7 +15,6 @@
 import org.apache.spark.sql.catalyst.expressions.GreaterThanOrEqual;
 import org.apache.spark.sql.catalyst.expressions.In$;
 import org.apache.spark.sql.catalyst.expressions.InSubquery$;
-import org.apache.spark.sql.catalyst.expressions.LambdaFunction$;
 import org.apache.spark.sql.catalyst.expressions.LessThan;
 import org.apache.spark.sql.catalyst.expressions.LessThanOrEqual;
 import org.apache.spark.sql.catalyst.expressions.ListQuery$;
@@ -26,8 +24,6 @@
 import org.apache.spark.sql.catalyst.expressions.RowFrame$;
 import org.apache.spark.sql.catalyst.expressions.ScalaUDF;
 import org.apache.spark.sql.catalyst.expressions.ScalarSubquery$;
-import org.apache.spark.sql.catalyst.expressions.UnresolvedNamedLambdaVariable;
-import org.apache.spark.sql.catalyst.expressions.UnresolvedNamedLambdaVariable$;
 import org.apache.spark.sql.catalyst.expressions.SpecifiedWindowFrame;
 import org.apache.spark.sql.catalyst.expressions.WindowExpression;
 import org.apache.spark.sql.catalyst.expressions.WindowSpecDefinition;
@@ -51,7 +47,6 @@
 import org.opensearch.sql.ast.expression.Literal;
 import org.opensearch.sql.ast.expression.Not;
 import org.opensearch.sql.ast.expression.Or;
-import org.opensearch.sql.ast.expression.LambdaFunction;
 import org.opensearch.sql.ast.expression.QualifiedName;
 import org.opensearch.sql.ast.expression.Span;
 import org.opensearch.sql.ast.expression.UnresolvedExpression;
@@ -73,9 +68,7 @@
 import org.opensearch.sql.ppl.utils.AggregatorTransformer;
 import org.opensearch.sql.ppl.utils.BuiltinFunctionTransformer;
 import org.opensearch.sql.ppl.utils.ComparatorTransformer;
-import org.opensearch.sql.ppl.utils.JavaToScalaTransformer;
 import scala.Option;
-import scala.PartialFunction;
 import scala.Tuple2;
 import scala.collection.Seq;
 
@@ -439,23 +432,6 @@ public Expression visitCidr(org.opensearch.sql.ast.expression.Cidr node, Catalys
         return context.getNamedParseExpressions().push(udf);
     }
 
-    @Override
-    public Expression visitLambdaFunction(LambdaFunction node, CatalystPlanContext context) {
-        PartialFunction<Expression, Expression> transformer = JavaToScalaTransformer.toPartialFunction(
-            expr -> expr instanceof UnresolvedAttribute,
-            expr -> {
-                UnresolvedAttribute attr = (UnresolvedAttribute) expr;
-                return new UnresolvedNamedLambdaVariable(attr.nameParts());
-            }
-        );
-        Expression functionResult = node.getFunction().accept(this, context).transformUp(transformer);
-        context.popNamedParseExpressions();
-        List<NamedExpression> argsResult = node.getFuncArgs().stream()
-            .map(arg -> UnresolvedNamedLambdaVariable$.MODULE$.apply(seq(arg.getParts())))
-            .collect(Collectors.toList());
-        return context.getNamedParseExpressions().push(LambdaFunction$.MODULE$.apply(functionResult, seq(argsResult), false));
-    }
-
     private List<Expression> visitExpressionList(List<UnresolvedExpression> expressionList, CatalystPlanContext context) {
         return expressionList.isEmpty()
                 ? emptyList()