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Community: add args_schema to sql_database tools for langGraph integration #18595

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merged 4 commits into from
Mar 15, 2024
Merged

Community: add args_schema to sql_database tools for langGraph integration #18595

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8579558
add args_schema to sql_database tools for langGraph integration
juanfe88 Mar 5, 2024
9573257
Merge branch 'master' into sql_tools_langraph_compatibility
juanfe88 Mar 5, 2024
4db6ae3
Merge branch 'master' into sql_tools_langraph_compatibility
juanfe88 Mar 5, 2024
5ab094f
Merge branch 'master' into sql_tools_langraph_compatibility
juanfe88 Mar 11, 2024
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11 changes: 11 additions & 0 deletions libs/community/langchain_community/tools/sql_database/tool.py
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Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,7 @@ class QuerySQLDataBaseTool(BaseSQLDatabaseTool, BaseTool):
If the query is not correct, an error message will be returned.
If an error is returned, rewrite the query, check the query, and try again.
"""
args_schema: Type[BaseModel] = _QuerySQLDataBaseToolInput

def _run(
self,
Expand Down Expand Up @@ -77,11 +78,16 @@ def _run(
)


class _ListSQLDataBaseToolInput(BaseModel):
tool_input: str = Field(..., description="An empty string")


class ListSQLDatabaseTool(BaseSQLDatabaseTool, BaseTool):
"""Tool for getting tables names."""

name: str = "sql_db_list_tables"
description: str = "Input is an empty string, output is a comma separated list of tables in the database."
args_schema: Type[BaseModel] = _ListSQLDataBaseToolInput

def _run(
self,
Expand All @@ -92,6 +98,10 @@ def _run(
return ", ".join(self.db.get_usable_table_names())


class _QuerySQLCheckerToolInput(BaseModel):
query: str = Field(..., description="A detailed and SQL query to be checked.")


class QuerySQLCheckerTool(BaseSQLDatabaseTool, BaseTool):
"""Use an LLM to check if a query is correct.
Adapted from https://www.patterns.app/blog/2023/01/18/crunchbot-sql-analyst-gpt/"""
Expand All @@ -104,6 +114,7 @@ class QuerySQLCheckerTool(BaseSQLDatabaseTool, BaseTool):
Use this tool to double check if your query is correct before executing it.
Always use this tool before executing a query with sql_db_query!
"""
args_schema: Type[BaseModel] = _QuerySQLCheckerToolInput

@root_validator(pre=True)
def initialize_llm_chain(cls, values: Dict[str, Any]) -> Dict[str, Any]:
Expand Down