🔀 merge(base.py): add SQLDatabaseChain to the ChainCreator's type_dict to enable support for SQL database chains

📦 chore(pyproject.toml): add langchain-experimental package as a dependency

src/backend/langflow/interface/chains/base.py

@@ -8,6 +8,7 @@ from langflow.template.frontend_node.chains import ChainFrontendNode
 from langflow.utils.logger import logger
 from langflow.utils.util import build_template_from_class, build_template_from_method
 from langchain import chains
+from langchain_experimental.sql import SQLDatabaseChain
 
 # Assuming necessary imports for Field, Template, and FrontendNode classes
 
@@ -35,6 +36,8 @@ class ChainCreator(LangChainTypeCreator):
             }
             from langflow.interface.chains.custom import CUSTOM_CHAINS
 
+            self.type_dict["SQLDatabaseChain"] = SQLDatabaseChain
+
             self.type_dict.update(CUSTOM_CHAINS)
             # Filter according to settings.chains
             self.type_dict = {