Function build_graph_stats_sql

nodedb-client/src/remote/client/graph.rs:223–233

Build the SQL for `SHOW GRAPH STATS`. Collection and `as_of` are both optional; when absent the corresponding clause is omitted entirely.

(collection: Option<&str>, as_of: Option<i64>)

/// Build the SQL for `SHOW GRAPH STATS`. Collection and `as_of` are both
/// optional; when absent the corresponding clause is omitted entirely.
pub(crate) fn build_graph_stats_sql(collection: Option<&str>, as_of: Option<i64>) -> String {
    let mut sql = "SHOW GRAPH STATS".to_string();
    if let Some(c) = collection {
        sql.push(' ');
        sql.push_str(&quote_string_literal(c));
    }
    if let Some(ms) = as_of {
        sql.push_str(&format!(" AS OF SYSTEM TIME {ms}"));
    }
    sql
}

/// Parse a multi-row response from `SHOW GRAPH STATS` into a vec of
/// `GraphStats`. Empty rows produce an empty vec. Column-shape mismatches