test(oceanbase): cover Oracle sequence metadata fallbacks

internal/app/methods_db_objects.go

@@ -417,9 +417,16 @@ func buildObjectSequenceMetadataQueries(dbType string, dbName string) []objectMe
 	switch dbType {
 	case "oracle", "dameng":
 		if strings.TrimSpace(dbName) == "" {
-			return []objectMetadataQuerySpec{{sql: "SELECT SEQUENCE_NAME AS sequence_name FROM USER_SEQUENCES ORDER BY SEQUENCE_NAME"}}
+			return []objectMetadataQuerySpec{
+				{sql: "SELECT * FROM USER_SEQUENCES ORDER BY SEQUENCE_NAME"},
+				{sql: "SELECT OBJECT_NAME AS sequence_name FROM USER_OBJECTS WHERE OBJECT_TYPE = 'SEQUENCE' ORDER BY OBJECT_NAME"},
+			}
+		}
+		owner := strings.ToUpper(safeDbName)
+		return []objectMetadataQuerySpec{
+			{sql: fmt.Sprintf("SELECT * FROM ALL_SEQUENCES WHERE SEQUENCE_OWNER = '%s' ORDER BY SEQUENCE_NAME", owner)},
+			{sql: fmt.Sprintf("SELECT OWNER AS schema_name, OBJECT_NAME AS sequence_name FROM ALL_OBJECTS WHERE OWNER = '%s' AND OBJECT_TYPE = 'SEQUENCE' ORDER BY OBJECT_NAME", owner)},
 		}
-		return []objectMetadataQuerySpec{{sql: fmt.Sprintf("SELECT SEQUENCE_OWNER AS schema_name, SEQUENCE_NAME AS sequence_name FROM ALL_SEQUENCES WHERE SEQUENCE_OWNER = '%s' ORDER BY SEQUENCE_NAME", strings.ToUpper(safeDbName))}}
 	default:
 		return nil
 	}

internal/app/methods_db_objects_sequence_test.go

@@ -0,0 +1,39 @@
+package app
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestBuildObjectSequenceMetadataQueriesOracleUsesWildcardAndObjectFallback(t *testing.T) {
+	t.Parallel()
+
+	specs := buildObjectSequenceMetadataQueries("oracle", "sbdev")
+	if len(specs) != 2 {
+		t.Fatalf("expected 2 Oracle sequence metadata queries, got %d", len(specs))
+	}
+	if !strings.Contains(specs[0].sql, "SELECT * FROM ALL_SEQUENCES") {
+		t.Fatalf("expected ALL_SEQUENCES wildcard query, got %q", specs[0].sql)
+	}
+	if strings.Contains(specs[0].sql, "LAST_NUMBER") || strings.Contains(specs[0].sql, "ORDER_FLAG") {
+		t.Fatalf("query should not enumerate optional sequence columns: %q", specs[0].sql)
+	}
+	if !strings.Contains(specs[1].sql, "ALL_OBJECTS") || !strings.Contains(specs[1].sql, "OBJECT_TYPE = 'SEQUENCE'") {
+		t.Fatalf("expected ALL_OBJECTS fallback query, got %q", specs[1].sql)
+	}
+}
+
+func TestBuildObjectSequenceMetadataQueriesOracleUserFallbacks(t *testing.T) {
+	t.Parallel()
+
+	specs := buildObjectSequenceMetadataQueries("oracle", "")
+	if len(specs) != 2 {
+		t.Fatalf("expected 2 Oracle user sequence metadata queries, got %d", len(specs))
+	}
+	if specs[0].sql != "SELECT * FROM USER_SEQUENCES ORDER BY SEQUENCE_NAME" {
+		t.Fatalf("unexpected USER_SEQUENCES query: %q", specs[0].sql)
+	}
+	if !strings.Contains(specs[1].sql, "USER_OBJECTS") || !strings.Contains(specs[1].sql, "OBJECT_TYPE = 'SEQUENCE'") {
+		t.Fatalf("expected USER_OBJECTS fallback query, got %q", specs[1].sql)
+	}
+}