[DH-5509] Improve env vars documentation and example file

.env.example

@@ -6,13 +6,13 @@ LLM_MODEL = "gpt-4-turbo-preview"
 
 # All of our SQL generation agents are using different tools to generate SQL queries, in order to limit the number of times that agents can
 # use different tools you can set the "AGENT_MAX_ITERATIONS" env variable. By default it is set to 20 iterations.
-
+AGENT_MAX_ITERATIONS = 15
 #timeout in seconds for the engine to return a response. Defaults to 150 seconds
-DH_ENGINE_TIMEOUT = 
+DH_ENGINE_TIMEOUT = 150
 #tmeout for SQL execution, our agents exceute the SQL query to recover from errors, this is the timeout for that execution. Defaults to 30 seconds
 SQL_EXECUTION_TIMEOUT =
 #The upper limit on number of rows returned from the query engine (equivalent to using LIMIT N in PostgreSQL/MySQL/SQlite). Defauls to 50
-UPPER_LIMIT_QUERY_RETURN_ROWS = 
+UPPER_LIMIT_QUERY_RETURN_ROWS = 50
 #Encryption key for storing DB connection data in Mongo
 ENCRYPT_KEY = 
 

README.md

@@ -82,9 +82,9 @@ ORG_ID =
 ENCRYPT_KEY = 
 
 # the variable that determines how many rows should be returned from a query to the agents, set it to small values to avoid high costs and long response times, default is 50
-UPPER_LIMIT_QUERY_RETURN_ROWS = 
+UPPER_LIMIT_QUERY_RETURN_ROWS = 50
 # the variable that force the engine to quit if the sql geneation takes more than the time set in this variable, default is None.
-DH_ENGINE_TIMEOUT =
+DH_ENGINE_TIMEOUT = 150
 ```
 
 While not strictly required, we also strongly suggest you change the MONGO username and password fields as well.

docs/envars.rst

@@ -40,8 +40,9 @@ provided in the .env.example file with the default values.
   
     ONLY_STORE_CSV_FILES_LOCALLY =
 
-    DH_ENGINE_TIMEOUT =
-    UPPER_LIMIT_QUERY_RETURN_ROWS =
+    AGENT_MAX_ITERATIONS = 15
+    DH_ENGINE_TIMEOUT = 150
+    UPPER_LIMIT_QUERY_RETURN_ROWS = 50
 
 
 .. csv-table::