Added parser for set_statement

	modified:   evadb/parser/evadb.lark
Added class for set_statement
	new file:   evadb/parser/set_statement.py
Added SET to statement_types
	modified:   evadb/parser/types.py

evadb/parser/evadb.lark

@@ -8,7 +8,7 @@ ddl_statement: create_database | create_table | create_index | create_function
     | drop_database | drop_table | drop_function | drop_index | rename_table
 
 dml_statement: select_statement | insert_statement | update_statement
-    | delete_statement | load_statement
+    | delete_statement | load_statement | set_statement
 
 utility_statement: describe_statement | show_statement | help_statement | explain_statement
 
@@ -80,7 +80,7 @@ drop_table: DROP TABLE if_exists? uid
 drop_function: DROP FUNCTION if_exists? uid
 
 // SET statements (configuration)
-set_statement: SET uid EQUAL_SYMBOL (string_literal | decimal_literal | boolean_literal)
+set_statement: SET uid EQUAL_SYMBOL (string_literal | decimal_literal | boolean_literal | real_literal)
 
 // Data Manipulation Language
 

evadb/parser/set_statement.py

@@ -0,0 +1,48 @@
+# coding=utf-8
+# Copyright 2018-2023 EvaDB
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from __future__ import annotations
+from typing import Union
+
+from evadb.parser.statement import AbstractStatement
+from evadb.parser.types import StatementType
+
+
+class SetStatement(AbstractStatement):
+    def __init__(self, config_name: str, config_value: Union[int, str, float]):
+        super().__init__(StatementType.SET)
+        self.config_name = config_name
+        self.config_value = config_value
+
+    @property
+    def config_name(self):
+        return self.config_name
+
+    @property
+    def config_value(self):
+        return self.config_value
+
+    def __str__(self):
+        return f"SET {str(self.config_name)} = {str(self.config_value)}"
+
+    def __eq__(self, other: object) -> bool:
+        if not isinstance(other, SetStatement):
+            return False
+        return (
+            self.config_name == other.config_name
+            and self.config_value == other.config_value
+        )
+
+    def __hash__(self) -> int:
+        return hash((super().__hash__(), self.config_name, self.config_value))

evadb/parser/types.py

@@ -41,6 +41,7 @@ class StatementType(EvaDBEnum):
     CREATE_INDEX  # noqa: F821
     CREATE_DATABASE  # noqa: F821
     USE  # noqa: F821
+    SET  # noqa: F821
     # add other types