diff --git a/internal/diff/diff.go b/internal/diff/diff.go
index 48f8b5e9..5ae3a1f6 100644
--- a/internal/diff/diff.go
+++ b/internal/diff/diff.go
@@ -1929,7 +1929,7 @@ func functionReferencesNewView(fn *ir.Function, newViews map[string]struct{}) bo
 }
 
 // extractBaseTypeName extracts the base type name from a type expression,
-// stripping SETOF prefix and array notation.
+// stripping SETOF prefix, array notation, and double quotes from identifiers.
 func extractBaseTypeName(typeExpr string) string {
 	t := strings.TrimSpace(typeExpr)
 	// Strip SETOF prefix (case-insensitive)
@@ -1940,6 +1940,8 @@ func extractBaseTypeName(typeExpr string) string {
 	for len(t) > 2 && t[len(t)-2:] == "[]" {
 		t = t[:len(t)-2]
 	}
+	// Strip double quotes from identifiers (e.g., public."ViewName" -> public.ViewName)
+	t = strings.ReplaceAll(t, "\"", "")
 	return t
 }
 
diff --git a/internal/diff/type_extract_test.go b/internal/diff/type_extract_test.go
new file mode 100644
index 00000000..c9a7a568
--- /dev/null
+++ b/internal/diff/type_extract_test.go
@@ -0,0 +1,61 @@
+package diff
+
+import "testing"
+
+func TestExtractBaseTypeName(t *testing.T) {
+	tests := []struct {
+		name     string
+		typeExpr string
+		want     string
+	}{
+		{
+			name:     "simple type",
+			typeExpr: "integer",
+			want:     "integer",
+		},
+		{
+			name:     "SETOF simple type",
+			typeExpr: "SETOF actor",
+			want:     "actor",
+		},
+		{
+			name:     "SETOF with schema",
+			typeExpr: "SETOF public.actor",
+			want:     "public.actor",
+		},
+		{
+			name:     "SETOF with quoted type name",
+			typeExpr: `SETOF public."ViewName"`,
+			want:     "public.ViewName",
+		},
+		{
+			name:     "SETOF with quoted schema and type",
+			typeExpr: `SETOF "Schema"."ViewName"`,
+			want:     "Schema.ViewName",
+		},
+		{
+			name:     "quoted type only",
+			typeExpr: `"MyType"`,
+			want:     "MyType",
+		},
+		{
+			name:     "array type",
+			typeExpr: "integer[]",
+			want:     "integer",
+		},
+		{
+			name:     "SETOF quoted type with array",
+			typeExpr: `SETOF public."ViewName"[]`,
+			want:     "public.ViewName",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := extractBaseTypeName(tt.typeExpr)
+			if got != tt.want {
+				t.Errorf("extractBaseTypeName(%q) = %q, want %q", tt.typeExpr, got, tt.want)
+			}
+		})
+	}
+}