Push slice_id as meta into SQL_QUERY_MUTATOR

[NeilPerry1]

Hello there.

Any ideas how we can impement slice_id as meta into SQL_QUERY_MUTATOR of config.py and for sure not break something significant? Like the main idea to get current query and slice_id to push it on db's client like "f --slice_id:{slice_id} \n{sql}"

Thanks in advance!

[dosubot[bot]]

Hello there, @NeilPerry1! I'm here to help you with any questions or issues you have. Let's tackle this together!

To implement slice_id as meta into SQL_QUERY_MUTATOR in config.py without breaking significant functionality, you can modify the SQL_QUERY_MUTATOR function to include the slice_id in the SQL query as a comment. Here is how you can do it:

def SQL_QUERY_MUTATOR(  # pylint: disable=invalid-name,unused-argument
    sql: str, slice_id: int = None, **kwargs: Any
) -> str:
    if slice_id is not None:
        sql = f"-- slice_id: {slice_id}\n{sql}"
    return sql

This modification ensures that the slice_id is added as a comment at the beginning of the SQL query if it is provided. This approach maintains backward compatibility and does not affect the cache key, as comments in SQL are typically ignored by the database engine ^[1].

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[NeilPerry1]

Meant to get it as slice_id from request when query are going to be generated. I see "LOG" implementation to get current slice_id on user's request. Cant we do the same puting it into SQL_QUERY_MUTATOR?

[dosubot[bot]]

Yes, you can get the slice_id from the request when the query is generated and put it into SQL_QUERY_MUTATOR similar to how it is done in the "LOG" implementation. The slice_id can be accessed from the request arguments as shown in the explore_json method.

Here is an example of how you can modify the SQL_QUERY_MUTATOR to include the slice_id:

def sql_query_mutator(sql: str, user_name: str, security_manager, database) -> str:
    slice_id = request.args.get("slice_id")
    if slice_id:
        # Modify the SQL query to include the slice_id
        sql = f"/* slice_id: {slice_id} */\n{sql}"
    return sql

app.config["SQL_QUERY_MUTATOR"] = sql_query_mutator

In this example, the sql_query_mutator function retrieves the slice_id from the request arguments and includes it as a comment in the SQL query. This function is then set as the SQL_QUERY_MUTATOR in the app configuration ^[1][2][3].

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