schema: sequence should always be the one row (pingcap#30784)

close pingcap#30786
godouxm · Dec 28, 2021 · 0af4b77 · 0af4b77
1 parent e983d32
commit 0af4b77
Showing 1 changed file with 2 additions and 3 deletions.
diff --git a/executor/infoschema_reader.go b/executor/infoschema_reader.go
@@ -577,9 +577,8 @@ func (e *memtableRetriever) setDataFromTables(ctx context.Context, sctx sessionc
 				}
 				if table.IsSequence() {
 					tableType = "SEQUENCE"
-					if rowCount == 0 {
-						rowCount = 1
-					}
+					// sequence is always 1 row regardless of stats.
+					rowCount = 1
 				}
 				if table.HasClusteredIndex() {
 					pkType = "CLUSTERED"