From 823d03f3f85050628888ea743315df538b8e1c18 Mon Sep 17 00:00:00 2001
From: Gani Georgiev <gani.georgiev@gmail.com>
Date: Sat, 12 Oct 2024 01:53:22 +0300
Subject: [PATCH] return io.EOF for empty Query statements

---
 sqlite3.go      |  2 +-
 sqlite3_test.go | 28 ++++++++++++++++++++++++++++
 2 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/sqlite3.go b/sqlite3.go
index ce985ec..852e94a 100644
--- a/sqlite3.go
+++ b/sqlite3.go
@@ -2206,7 +2206,7 @@ func (rc *SQLiteRows) nextSyncLocked(dest []driver.Value) error {
 		if rv != C.SQLITE_OK {
 			return rc.s.c.lastError()
 		}
-		return nil
+		return io.EOF
 	}
 
 	rc.declTypes()
diff --git a/sqlite3_test.go b/sqlite3_test.go
index 63c939d..c82bbe5 100644
--- a/sqlite3_test.go
+++ b/sqlite3_test.go
@@ -1997,6 +1997,34 @@ func TestNamedParam(t *testing.T) {
 	}
 }
 
+func TestEmptyQuery(t *testing.T) {
+	db, err := sql.Open("sqlite3", ":memory:")
+	if err != nil {
+		t.Fatal("Failed to open database:", err)
+	}
+	defer db.Close()
+
+	queries := []string{
+		"",
+		";",
+		" -- comment ",
+	}
+
+	for _, q := range queries {
+		t.Run(fmt.Sprintf("query:%q", q), func(t *testing.T) {
+			rows, err := db.Query(q)
+			if err != nil {
+				t.Fatal("Failed to run empty query:", err)
+			}
+			defer rows.Close()
+
+			if rows.Next() != false {
+				t.Fatal("Expected no rows")
+			}
+		})
+	}
+}
+
 var customFunctionOnce sync.Once
 
 func BenchmarkCustomFunctions(b *testing.B) {