Changeset: cf8e063d3e77 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=cf8e063d3e77
Modified Files:
sql/server/rel_statistics_functions.c
Branch: properties
Log Message:
Statistics for sign and abs
diffs (91 lines):
diff --git a/sql/server/rel_statistics_functions.c
b/sql/server/rel_statistics_functions.c
--- a/sql/server/rel_statistics_functions.c
+++ b/sql/server/rel_statistics_functions.c
@@ -217,12 +217,86 @@ sql_neg_propagate_statistics(mvc *sql, s
}
}
-static struct function_properties functions_list[11] = {
+static void
+sql_sign_propagate_statistics(mvc *sql, sql_exp *e)
+{
+ list *l = e->l;
+ sql_exp *first = l->h->data;
+ ValPtr omin, omax, res1 = (ValPtr) sa_zalloc(sql->sa,
sizeof(ValRecord)), res2 = (ValPtr) sa_zalloc(sql->sa, sizeof(ValRecord));
+ ValRecord minus1 = (ValRecord) {.vtype = TYPE_bte, .val.btval = -1},
plus1 = (ValRecord) {.vtype = TYPE_bte, .val.btval = 1};
+ bool properties_set = false;
+
+ if ((omin = find_prop_and_get(first->p, PROP_MIN)) && (omax =
find_prop_and_get(first->p, PROP_MAX))) {
+ ValRecord zero1 = (ValRecord) {.vtype = omin->vtype,}, zero2 =
(ValRecord) {.vtype = omax->vtype,}, verify1, verify2, verify3, verify4;
+
+ VARcalcgt(&verify1, omin, &zero1);
+ VARcalcgt(&verify2, omax, &zero2);
+ VARcalclt(&verify3, omin, &zero1);
+ VARcalclt(&verify4, omax, &zero2);
+
+ if (verify1.val.btval == 1 && verify2.val.btval == 1) {
+ VALcopy(res1, &plus1);
+ VALcopy(res2, &plus1);
+ set_property(sql, e, PROP_MAX, res1);
+ set_property(sql, e, PROP_MIN, res2);
+ properties_set = true;
+ } else if (verify3.val.btval == 1 && verify4.val.btval == 1) {
+ VALcopy(res1, &minus1);
+ VALcopy(res2, &minus1);
+ set_property(sql, e, PROP_MAX, res1);
+ set_property(sql, e, PROP_MIN, res2);
+ properties_set = true;
+ }
+ }
+ if (!properties_set) {
+ VALcopy(res1, &plus1);
+ VALcopy(res2, &minus1);
+ set_property(sql, e, PROP_MAX, res1);
+ set_property(sql, e, PROP_MIN, res2);
+ }
+}
+
+static void
+sql_abs_propagate_statistics(mvc *sql, sql_exp *e)
+{
+ list *l = e->l;
+ sql_exp *first = l->h->data;
+ ValPtr omin, omax, res1 = (ValPtr) sa_zalloc(sql->sa,
sizeof(ValRecord)), res2 = (ValPtr) sa_zalloc(sql->sa, sizeof(ValRecord));
+
+ if ((omin = find_prop_and_get(first->p, PROP_MIN)) && (omax =
find_prop_and_get(first->p, PROP_MAX))) {
+ ValRecord zero1 = (ValRecord) {.vtype = omin->vtype,}, zero2 =
(ValRecord) {.vtype = omax->vtype,}, verify1, verify2, verify3, verify4;
+
+ VARcalcge(&verify1, omin, &zero1);
+ VARcalcge(&verify2, omax, &zero2);
+ VARcalcle(&verify3, omin, &zero1);
+ VARcalcle(&verify4, omax, &zero2);
+
+ if (verify1.val.btval == 1 && verify2.val.btval == 1) {
+ gdk_return code1 = VARcalcabsolute(res1, omax);
+ gdk_return code2 = VARcalcabsolute(res2, omin);
+
+ assert(code1 && code2);
+ set_property(sql, e, PROP_MAX, res1);
+ set_property(sql, e, PROP_MIN, res2);
+ } else if (verify3.val.btval == 1 && verify4.val.btval == 1) {
+ gdk_return code1 = VARcalcabsolute(res1, omax);
+ gdk_return code2 = VARcalcabsolute(res2, omin);
+
+ assert(code1 && code2);
+ set_property(sql, e, PROP_MAX, res2);
+ set_property(sql, e, PROP_MIN, res1);
+ }
+ }
+}
+
+static struct function_properties functions_list[13] = {
{"sql_add", &sql_add_propagate_statistics},
{"sql_sub", &sql_sub_propagate_statistics},
{"sql_mul", &sql_mul_propagate_statistics},
{"sql_div", &sql_div_propagate_statistics},
{"sql_neg", &sql_neg_propagate_statistics},
+ {"sign", &sql_sign_propagate_statistics},
+ {"abs", &sql_abs_propagate_statistics},
{"sql_min", &sql_least_greatest_propagate_statistics},
{"sql_max", &sql_least_greatest_propagate_statistics},
{"least", &sql_least_greatest_propagate_statistics},
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