forked from Archives/langchain
for https://github.com/hwchase17/langchain/issues/1582 I simply added the `return_intermediate_steps` and changed the `output_keys` function. I added 2 simple tests, 1 for SQLDatabaseSequentialChain without the intermediate steps and 1 with Co-authored-by: brad-nemetski <115185478+brad-nemetski@users.noreply.github.com>
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@ -117,6 +117,8 @@ class SQLDatabaseSequentialChain(Chain, BaseModel):
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This is useful in cases where the number of tables in the database is large.
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"""
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return_intermediate_steps: bool = False
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@classmethod
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def from_llm(
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cls,
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@ -154,7 +156,10 @@ class SQLDatabaseSequentialChain(Chain, BaseModel):
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:meta private:
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"""
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return [self.output_key]
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if not self.return_intermediate_steps:
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return [self.output_key]
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else:
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return [self.output_key, "intermediate_steps"]
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def _call(self, inputs: Dict[str, str]) -> Dict[str, str]:
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_table_names = self.sql_chain.database.get_table_names()
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@ -1,7 +1,10 @@
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"""Test SQL Database Chain."""
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from sqlalchemy import Column, Integer, MetaData, String, Table, create_engine, insert
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from langchain.chains.sql_database.base import SQLDatabaseChain
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from langchain.chains.sql_database.base import (
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SQLDatabaseChain,
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SQLDatabaseSequentialChain,
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)
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from langchain.llms.openai import OpenAI
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from langchain.sql_database import SQLDatabase
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@ -45,3 +48,47 @@ def test_sql_database_run_update() -> None:
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output = db_chain.run("What company does Harrison work at?")
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expected_output = " Harrison works at Bar."
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assert output == expected_output
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def test_sql_database_sequential_chain_run() -> None:
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"""Test that commands can be run successfully SEQUENTIALLY
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and returned in correct format."""
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engine = create_engine("sqlite:///:memory:")
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metadata_obj.create_all(engine)
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stmt = insert(user).values(user_id=13, user_name="Harrison", user_company="Foo")
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with engine.connect() as conn:
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conn.execute(stmt)
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db = SQLDatabase(engine)
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db_chain = SQLDatabaseSequentialChain.from_llm(
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llm=OpenAI(temperature=0), database=db
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)
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output = db_chain.run("What company does Harrison work at?")
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expected_output = " Harrison works at Foo."
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assert output == expected_output
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def test_sql_database_sequential_chain_intermediate_steps() -> None:
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"""Test that commands can be run successfully SEQUENTIALLY and returned
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in correct format. sWith Intermediate steps"""
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engine = create_engine("sqlite:///:memory:")
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metadata_obj.create_all(engine)
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stmt = insert(user).values(user_id=13, user_name="Harrison", user_company="Foo")
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with engine.connect() as conn:
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conn.execute(stmt)
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db = SQLDatabase(engine)
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db_chain = SQLDatabaseSequentialChain.from_llm(
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llm=OpenAI(temperature=0), database=db, return_intermediate_steps=True
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)
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output = db_chain("What company does Harrison work at?")
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expected_output = " Harrison works at Foo."
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assert output["result"] == expected_output
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query = output["intermediate_steps"][0]
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expected_query = (
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" SELECT user_company FROM user WHERE user_name = 'Harrison' LIMIT 1;"
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)
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assert query == expected_query
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query_results = output["intermediate_steps"][1]
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expected_query_results = "[('Foo',)]"
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assert query_results == expected_query_results
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