diff --git a/.gitignore b/.gitignore
index 9264fd73c..48d26fc09 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,4 +18,5 @@ ligradle
 .DS_Store
 *.patch
 */metastore_db
-.pyc
\ No newline at end of file
+.pyc
+__pycache__
diff --git a/coral-trino/src/main/java/com/linkedin/coral/trino/rel2trino/DataTypeDerivedSqlCallConverter.java b/coral-trino/src/main/java/com/linkedin/coral/trino/rel2trino/DataTypeDerivedSqlCallConverter.java
index 056120e91..f23a8ebf6 100644
--- a/coral-trino/src/main/java/com/linkedin/coral/trino/rel2trino/DataTypeDerivedSqlCallConverter.java
+++ b/coral-trino/src/main/java/com/linkedin/coral/trino/rel2trino/DataTypeDerivedSqlCallConverter.java
@@ -1,10 +1,13 @@
 /**
- * Copyright 2022-2023 LinkedIn Corporation. All rights reserved.
+ * Copyright 2022-2024 LinkedIn Corporation. All rights reserved.
  * Licensed under the BSD-2 Clause license.
  * See LICENSE in the project root for license information.
  */
 package com.linkedin.coral.trino.rel2trino;
 
+import java.util.List;
+import java.util.Map;
+
 import org.apache.calcite.sql.SqlBasicCall;
 import org.apache.calcite.sql.SqlCall;
 import org.apache.calcite.sql.SqlNode;
@@ -47,6 +50,17 @@ public DataTypeDerivedSqlCallConverter(HiveMetastoreClient mscClient, SqlNode to
         new UnionSqlCallTransformer(typeDerivationUtil));
   }
 
+  public DataTypeDerivedSqlCallConverter(Map<String, Map<String, List<String>>> localMetaStore, SqlNode topSqlNode) {
+    toRelConverter = new HiveToRelConverter(localMetaStore);
+    topSqlNode.accept(new RegisterDynamicFunctionsForTypeDerivation());
+
+    TypeDerivationUtil typeDerivationUtil = new TypeDerivationUtil(toRelConverter.getSqlValidator(), topSqlNode);
+    operatorTransformerList = SqlCallTransformers.of(new FromUtcTimestampOperatorTransformer(typeDerivationUtil),
+        new GenericProjectTransformer(typeDerivationUtil), new NamedStructToCastTransformer(typeDerivationUtil),
+        new ConcatOperatorTransformer(typeDerivationUtil), new SubstrOperatorTransformer(typeDerivationUtil),
+        new UnionSqlCallTransformer(typeDerivationUtil));
+  }
+
   @Override
   public SqlNode visit(final SqlCall call) {
     return operatorTransformerList.apply((SqlCall) super.visit(call));
diff --git a/coral-trino/src/main/java/com/linkedin/coral/trino/rel2trino/RelToTrinoConverter.java b/coral-trino/src/main/java/com/linkedin/coral/trino/rel2trino/RelToTrinoConverter.java
index 416c0299f..7cff79033 100644
--- a/coral-trino/src/main/java/com/linkedin/coral/trino/rel2trino/RelToTrinoConverter.java
+++ b/coral-trino/src/main/java/com/linkedin/coral/trino/rel2trino/RelToTrinoConverter.java
@@ -1,5 +1,5 @@
 /**
- * Copyright 2017-2023 LinkedIn Corporation. All rights reserved.
+ * Copyright 2017-2024 LinkedIn Corporation. All rights reserved.
  * Licensed under the BSD-2 Clause license.
  * See LICENSE in the project root for license information.
  */
@@ -56,6 +56,7 @@ public class RelToTrinoConverter extends RelToSqlConverter {
    */
   private Map<String, Boolean> configs = new HashMap<>();
   private HiveMetastoreClient _hiveMetastoreClient;
+  private Map<String, Map<String, List<String>>> _localMetaStore;
 
   /**
    * Creates a RelToTrinoConverter.
@@ -78,6 +79,18 @@ public RelToTrinoConverter(HiveMetastoreClient mscClient, Map<String, Boolean> c
     _hiveMetastoreClient = mscClient;
   }
 
+  /**
+   * Creates a RelToTrinoConverter.
+   * @param localMetaStore In-memory Hive metastore represented in a map.
+   * @param configs configs
+   */
+  public RelToTrinoConverter(Map<String, Map<String, List<String>>> localMetaStore, Map<String, Boolean> configs) {
+    super(TrinoSqlDialect.INSTANCE);
+    checkNotNull(configs);
+    this.configs = configs;
+    _localMetaStore = localMetaStore;
+  }
+
   /**
    * Convert relational algebra to Trino's SQL
    * @param relNode calcite relational algebra representation of SQL
@@ -87,8 +100,17 @@ public String convert(RelNode relNode) {
     RelNode rel = convertRel(relNode, configs);
     SqlNode sqlNode = convertToSqlNode(rel);
 
-    SqlNode sqlNodeWithRelDataTypeDerivedConversions =
-        sqlNode.accept(new DataTypeDerivedSqlCallConverter(_hiveMetastoreClient, sqlNode));
+    DataTypeDerivedSqlCallConverter sqlNodeWithRelDataTypeDerivedConverter;
+
+    if (_localMetaStore != null && _hiveMetastoreClient == null) {
+      sqlNodeWithRelDataTypeDerivedConverter = new DataTypeDerivedSqlCallConverter(_localMetaStore, sqlNode);
+    } else if (_hiveMetastoreClient != null && _localMetaStore == null) {
+      sqlNodeWithRelDataTypeDerivedConverter = new DataTypeDerivedSqlCallConverter(_hiveMetastoreClient, sqlNode);
+    } else {
+      throw new IllegalStateException("Metadata source must be provided");
+    }
+
+    SqlNode sqlNodeWithRelDataTypeDerivedConversions = sqlNode.accept(sqlNodeWithRelDataTypeDerivedConverter);
 
     SqlNode sqlNodeWithUDFOperatorConverted =
         sqlNodeWithRelDataTypeDerivedConversions.accept(new CoralToTrinoSqlCallConverter(configs));