Add some comments to some SQL features

Otherwise, it could be confusing to a reader that some of these
well-publicized features are simply listed as unsupported without
further explanation.

diff --git a/src/backend/catalog/sql_features.txt b/src/backend/catalog/sql_features.txt
index d83d0bd88aeac24e917002ac33b30d4d5ea8b2c4..1e6f5c1971d1a2a60d90f019c0cf7544d88324c5 100644 (file)
--- a/src/backend/catalog/sql_features.txt
+++ b/src/backend/catalog/sql_features.txt
@@ -432,8 +432,8 @@ T171        LIKE clause in table definition                 YES
 T172   AS subquery clause in table definition                  YES     
 T173   Extended LIKE clause in table definition                        YES     
 T174   Identity columns                        YES     
-T175   Generated columns                       NO      
-T176   Sequence generator support                      NO      
+T175   Generated columns                       NO      mostly supported
+T176   Sequence generator support                      NO      supported except for NEXT VALUE FOR
 T177   Sequence generator support: simple restart option                       YES     
 T178   Identity columns:  simple restart option                        YES     
 T180   System-versioned tables                 NO