From 084f3d386f9fbe21b85a7cd17d0744dedf9c31ae Mon Sep 17 00:00:00 2001
From: Yasuhiro Matsumoto <mattn.jp@gmail.com>
Date: Wed, 29 Jul 2026 09:48:47 +0900
Subject: [PATCH 1/2] Close prepared statement and fail if limit is not
 enforced in limit example

---
 _example/limit/limit.go | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/_example/limit/limit.go b/_example/limit/limit.go
index c1adfe8..16bf025 100644
--- a/_example/limit/limit.go
+++ b/_example/limit/limit.go
@@ -32,6 +32,7 @@ func bulkInsert(db *sql.DB, query string, args []any) (err error) {
 	if err != nil {
 		return
 	}
+	defer stmt.Close()
 
 	_, err = stmt.Exec(args...)
 	if err != nil {
@@ -89,11 +90,10 @@ func main() {
 
 	query, args = createBulkInsertQuery(num, num)
 	err = bulkInsert(db, query, args)
-	if err != nil {
-		if err != nil {
-			log.Printf("expect failed since SQLITE_LIMIT_VARIABLE_NUMBER is too small: %v", err)
-		}
+	if err == nil {
+		log.Fatal("expected failure since SQLITE_LIMIT_VARIABLE_NUMBER is too small, but insert succeeded")
 	}
+	log.Printf("expect failed since SQLITE_LIMIT_VARIABLE_NUMBER is too small: %v", err)
 
 	bigLimitVariableNumber := 999999
 	sqlite3conn.SetLimit(sqlite3.SQLITE_LIMIT_VARIABLE_NUMBER, bigLimitVariableNumber)
@@ -104,9 +104,7 @@ func main() {
 	query, args = createBulkInsertQuery(500, num+num)
 	err = bulkInsert(db, query, args)
 	if err != nil {
-		if err != nil {
-			log.Fatal(err)
-		}
+		log.Fatal(err)
 	}
 
 	log.Println("no error if SQLITE_LIMIT_VARIABLE_NUMBER > 999")

From 18f2ec37d384d0ee65be85b3c8ae1b4aa58168b2 Mon Sep 17 00:00:00 2001
From: Yasuhiro Matsumoto <mattn.jp@gmail.com>
Date: Wed, 29 Jul 2026 15:50:02 +0900
Subject: [PATCH 2/2] Assert the expected too many SQL variables error

---
 _example/limit/limit.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/_example/limit/limit.go b/_example/limit/limit.go
index 16bf025..4ac33c2 100644
--- a/_example/limit/limit.go
+++ b/_example/limit/limit.go
@@ -93,6 +93,9 @@ func main() {
 	if err == nil {
 		log.Fatal("expected failure since SQLITE_LIMIT_VARIABLE_NUMBER is too small, but insert succeeded")
 	}
+	if !strings.Contains(err.Error(), "too many SQL variables") {
+		log.Fatalf("expected too many SQL variables error, got: %v", err)
+	}
 	log.Printf("expect failed since SQLITE_LIMIT_VARIABLE_NUMBER is too small: %v", err)
 
 	bigLimitVariableNumber := 999999