diff --git a/pkg/analyzer/testdata/stmt/global_var.go b/pkg/analyzer/testdata/stmt/global_var.go
new file mode 100644
index 0000000..3bf0944
--- /dev/null
+++ b/pkg/analyzer/testdata/stmt/global_var.go
@@ -0,0 +1,42 @@
+package stmt
+
+import (
+	"database/sql"
+	"math/rand"
+	"sync"
+)
+
+var (
+	globalOnce sync.Once
+	globalStmt *sql.Stmt
+	globalErr  error
+)
+
+func globalVarTest() {
+	defer func() {
+		if globalStmt != nil {
+			_ = globalStmt.Close()
+		}
+	}()
+
+	for i := 0; i < 100; i++ {
+		if rand.Float64() > 0.8 {
+			err := optionalDbOp()
+			if err != nil {
+				return
+			}
+		}
+	}
+}
+
+func optionalDbOp() error {
+	globalOnce.Do(func() {
+		globalStmt, globalErr = db.Prepare("INSERT INTO `test` (`id`) VALUES(1)")
+	})
+	if globalErr != nil {
+		return globalErr
+	}
+
+	_, err := globalStmt.Exec()
+	return err
+}