Function arrow_avg

nodedb/src/control/arrow_convert.rs:223–231

Compute AVG of a numeric column (SUM / COUNT).

(batch: &RecordBatch, column_name: &str)

/// Compute AVG of a numeric column (SUM / COUNT).
pub fn arrow_avg(batch: &RecordBatch, column_name: &str) -> Option<f64> {
    let sum = arrow_sum(batch, column_name)?;
    let count = arrow_count(batch, column_name)?;
    if count == 0 {
        None
    } else {
        Some(sum / count as f64)
    }
}

/// Decode Arrow IPC stream bytes back into a RecordBatch.
///