use microseconds to store validity

cozo-core/src/data/functions.rs

@@ -1545,8 +1545,8 @@ pub(crate) fn op_parse_timestamp(args: &[DataValue]) -> Result<DataValue> {
 pub(crate) fn str2vld(s: &str) -> Result<Reverse<i64>> {
     let dt = DateTime::parse_from_rfc3339(s).map_err(|_| miette!("bad datetime: {}", s))?;
     let st: SystemTime = dt.into();
-    let millis = st.duration_since(UNIX_EPOCH).unwrap().as_secs_f64() * 1000.;
-    Ok(Reverse(millis as i64))
+    let microseconds = st.duration_since(UNIX_EPOCH).unwrap().as_secs_f64() * 1_000_000.;
+    Ok(Reverse(microseconds as i64))
 }
 
 define_op!(OP_RAND_UUID_V1, 0, false);

cozo-core/src/parse/query.rs

@@ -869,12 +869,8 @@ fn expr2vld_spec(expr: Expr, cur_vld: Reverse<i64>) -> Result<Reverse<i64>> {
     let vld_span = expr.span();
     match expr.eval_to_const()? {
         DataValue::Num(n) => {
-            let f = n.get_float();
-            let f = f * 1000.;
-            if !f.is_finite() {
-                bail!(BadValiditySpecification(vld_span))
-            }
-            Ok(Reverse(f as i64))
+            let microseconds = n.get_int().ok_or_else(|| BadValiditySpecification(vld_span))?;
+            Ok(Reverse(microseconds))
         }
         DataValue::Str(s) => {
             match &s as &str {