Add SQLAgentComponent build method to create SQL agent with SQLDatabaseToolkit

src/backend/langflow/components/agents/SQLAgent.py

@@ -3,7 +3,10 @@ from langflow import CustomComponent
 from typing import Union, Callable
 from langchain.agents import AgentExecutor
 from langflow.field_typing import BaseLanguageModel
-
+from langchain_community.agent_toolkits.sql.base import create_sql_agent
+from langchain.sql_database import SQLDatabase
+from langchain_community.agent_toolkits import SQLDatabaseToolkit
+ 
 class SQLAgentComponent(CustomComponent):
     display_name = "SQLAgent"
     description = "Construct an SQL agent from an LLM and tools."
@@ -12,14 +15,15 @@ class SQLAgentComponent(CustomComponent):
         return {
             "llm": {"display_name": "LLM"},
             "database_uri": {"display_name": "Database URI"},
+            "verbose": {"display_name": "Verbose", "value": False,"advanced": True},
         }
 
     def build(
         self,
         llm: BaseLanguageModel,
         database_uri: str,
+        verbose: bool = False,
     ) -> Union[AgentExecutor, Callable]:
-        # Assuming there is a constructor for SQLAgent that takes these parameters
-        # Since the actual implementation is not provided, this is a placeholder
-        # Replace SQLAgent with the actual class name if different
-        return AgentExecutor(llm=llm, database_uri=database_uri)
+        db = SQLDatabase.from_uri(database_uri)
+        toolkit = SQLDatabaseToolkit(db=db, llm=llm)
+        return create_sql_agent(llm=llm, toolkit=toolkit)