Fix incorrectly reported stats kind in "can't happen" ERROR

The error message(s) were reporting the stats kind of 'f', which is not
correct as that's for the "dependencies" statistics kind.

Reported-by: Horst Reiterer
Reviewed-by: Richard Guo
Discussion: https://postgr.es/m/18375-ba99383eb9062d6a@postgresql.org
Backpatch-through: 12, where MCV extended stats were added.

diff --git a/src/backend/statistics/mcv.c b/src/backend/statistics/mcv.c
index 8443f412bad03e454680c688fe1ae21e16b93f8a..3745f795f182570dc0d01783b84db6879b4f871b 100644 (file)
--- a/src/backend/statistics/mcv.c
+++ b/src/backend/statistics/mcv.c
@@ -572,7 +572,7 @@ statext_mcv_load(Oid mvoid)
        if (isnull)
                elog(ERROR,
                         "requested statistics kind \"%c\" is not yet built for statistics object %u",
-                        STATS_EXT_DEPENDENCIES, mvoid);
+                        STATS_EXT_MCV, mvoid);
 
        result = statext_mcv_deserialize(DatumGetByteaP(mcvlist));