MonetDB: Jun2020 - small fix for constants in groupby projections

[Niels Nes]

Changeset: 6c0c2e5a1bc7 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=6c0c2e5a1bc7
Modified Files:
        sql/backends/monet5/rel_bin.c
Branch: Jun2020
Log Message:

small fix for constants in groupby projections


diffs (13 lines):

diff --git a/sql/backends/monet5/rel_bin.c b/sql/backends/monet5/rel_bin.c
--- a/sql/backends/monet5/rel_bin.c
+++ b/sql/backends/monet5/rel_bin.c
@@ -3466,6 +3466,9 @@ rel2bin_groupby(backend *be, sql_rel *re
                        return NULL;
                }
 
+               if (!aggrstmt->nrcols && ext && ext->nrcols)
+                       aggrstmt = stmt_const(be, ext, aggrstmt);
+
                aggrstmt = stmt_rename(be, aggrexp, aggrstmt);
                list_append(l, aggrstmt);
        }
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