Recursive query when connecting to postgres db
Labels: name: auto:bug, name: area: models

> langchain-experimental :  0.0.42
> langchain : 0.0.340
> gpt4all : 2.0.2
> PostgreSQL : 15.5 

I am trying to query my postgres db using the following code:

```     
from langchain.callbacks.streaming_stdout import StreamingStdOutCallbackHandler
from langchain_experimental.sql import SQLDatabaseChain
from langchain.memory import ConversationBufferMemory
from langchain import SQLDatabase
from langchain.llms import GPT4All
from langchain.prompts import PromptTemplate
from langchain.globals import set_verbose
import os
   
username = "postgres" 
password = "password" 
host = "127.0.0.1" # internal IP 
port = "5432"
mydatabase = "reporting_db"
      
pg_uri = f'postgresql://{username}:{password}@{host}:{port}/{mydatabase}'
my_db = SQLDatabase.from_uri(pg_uri)

 _DEFAULT_TEMPLATE = '''Given an input question, first create a syntactically correct {dialect} query to run, 
      then look at the results of the query and return the answer.
      Use the following format:
      Question: "Question here"
      SQLQuery: "SQL Query to run"
      SQLResult: "Result of the SQLQuery"
      Answer: "Final answer here"
      
      Only use the following tables:
      
      {table_info}
      
      If someone asks for the book written, they really mean the work table.
      Question: {input}'''
      
PROMPT = PromptTemplate(
          input_variables=["input", "table_info", "dialect"], 
	      template=_DEFAULT_TEMPLATE
      )
      
path = "/var/lib/postgresql/data/llama-2-7b.Q2_K.gguf"
      
callbacks = [StreamingStdOutCallbackHandler()]
      
llm = GPT4All(model = path,
		        callbacks=callbacks,
		        n_threads=8,
		        max_tokens=81920,
		        verbose=True
			       )
      
      
set_verbose(True)
db_chain = SQLDatabaseChain.from_llm(llm = llm, 
                                                                  db = my_db,
								  prompt = PROMPT,
								  use_query_checker=True,
								  verbose = True
									      )
      
question = 'Count the rows on table Access'
answer = db_chain(question)
print(answer)```

but I am getting the following error:


```ERROR:  sqlalchemy.exc.ProgrammingError: (psycopg2.errors.SyntaxError) syntax error at or near "```"
LINE 1: ```sql
        ^

[SQL: ```sql
SELECT * FROM (
    SELECT * FROM (
        SELECT * FROM (
            SELECT * FROM (
                SELECT * FROM (
                    SELECT * FROM (
                        SELECT * FROM (
                            SELECT * FROM (
                                SELECT * FROM (
                                    SELECT * FROM (
                                        SELECT * FROM (
                                            SELECT * FROM (
                                                SELECT * FROM (
                                                    SELECT * FROM (
                                                            SELECT * FROM (
                                                                SELECT * FROM (
                                                                    SELECT * FROM (
                                                                            SELECT * FROM (
                                                                                    SELECT * FROM (
                                                                                        SELECT * FROM (
                                                                                                    SELECT * FROM (
                                                                                                                SELECT * FROM (
                                                                                                                        SELECT * FROM (
                                                                                                                            SELECT * FROM (
                                                                                                                                    SELECT * FROM (
                                                                                                                                            SELECT * FROM (
                                                                                                                                                SELECT * FROM (]
```

### Suggestion:

_No response_