Dunno what 'p' was supposed to mean, but since neither the code below
here nor pg_collation.h think it's valid, it must be a mistake.
Per report from Thomas Kellerer.
Discussion: https://postgr.es/m/og9q8f%24oes%241%40blaine.gmane.org
collinfo->dobj.catId.oid);
else
appendPQExpBuffer(query, "SELECT "
- "'p'::char AS collprovider, "
+ "'c'::char AS collprovider, "
"collcollate, "
"collctype, "
"NULL AS collversion "