MonetDB: Jul2021 - small earlier check for empty updates.

[Niels Nes]

Changeset: f2f331d351ee for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/f2f331d351ee
Modified Files:
        sql/storage/bat/bat_storage.c
Branch: Jul2021
Log Message:

small earlier check for empty updates.


diffs (29 lines):

diff --git a/sql/storage/bat/bat_storage.c b/sql/storage/bat/bat_storage.c
--- a/sql/storage/bat/bat_storage.c
+++ b/sql/storage/bat/bat_storage.c
@@ -1510,6 +1510,12 @@ update_col(sql_trans *tr, sql_column *c,
        bool update_conflict = false;
        sql_delta *delta, *odelta = ATOMIC_PTR_GET(&c->data);
 
+       if (tpe == TYPE_bat) {
+               BAT *t = tids;
+               if (!BATcount(t))
+                       return LOG_OK;
+       }
+
        if ((delta = bind_col_data(tr, c, &update_conflict)) == NULL)
                return update_conflict ? LOG_CONFLICT : LOG_ERR;
 
@@ -1561,6 +1567,12 @@ update_idx(sql_trans *tr, sql_idx * i, v
        bool update_conflict = false;
        sql_delta *delta, *odelta = ATOMIC_PTR_GET(&i->data);
 
+       if (tpe == TYPE_bat) {
+               BAT *t = tids;
+               if (!BATcount(t))
+                       return LOG_OK;
+       }
+
        if ((delta = bind_idx_data(tr, i, &update_conflict)) == NULL)
                return update_conflict ? LOG_CONFLICT : LOG_ERR;
 
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