If you derive an action and head to codegen tab, it says "Derive mutation"

While we are at this, the tooltip could use a better text message.

Is your feature request related to a problem?

There's only 2 files where we use pandas, but pandas is 49MB and numpy is another 86MB, slowing down builds massively.

Describe the solution you'd like

Replace pandas with a pure SQL/Python solution in

• posthog/queries/trends.py
• posthog/queries/sessions.py

Both of those have equivalent examples in Clickhouse (ee/clickhouse) that

I'm using postgresql, sqlx="0.4.0-beta.1".
My struct is like:

#[derive(Serialize, Deserialize, Debug, PartialEq, FromRow)]
pub struct Struct1 {
    pub a1: i16,
    pub a2: String,
    pub a3: Option<String>,
    pub a4: Option<serde_json::Value>,
    pub a5: serde_json::Value,
    pub a6: Option<String>,
    pub a7: Option<serde_json::Value>,
    pub a8: Option<f32>,
    pub a9: