From c4e7be04f849a56bdabe93d16ef1472e95fd3ae7 Mon Sep 17 00:00:00 2001
From: Diego Reis <reisdiego144@gmail.com>
Date: Thu, 8 May 2025 16:31:14 -0300
Subject: [PATCH] core: Handles prepared statement with empty SQL

---
 core/lib.rs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/core/lib.rs b/core/lib.rs
index f36072e3a..6139abdcd 100644
--- a/core/lib.rs
+++ b/core/lib.rs
@@ -325,6 +325,10 @@ pub struct Connection {
 
 impl Connection {
     pub fn prepare(self: &Rc<Connection>, sql: impl AsRef<str>) -> Result<Statement> {
+        if sql.as_ref().is_empty() {
+            return Err(LimboError::InvalidArgument("The supplied SQL string contains no statements".to_string()));
+        }
+
         let sql = sql.as_ref();
         tracing::trace!("Preparing: {}", sql);
         let mut parser = Parser::new(sql.as_bytes());
@@ -355,7 +359,10 @@ impl Connection {
                 Cmd::ExplainQueryPlan(_stmt) => todo!(),
             }
         } else {
-            todo!()
+            // Shouln't happen
+            Err(LimboError::ParseError(
+                "The supplied SQL string contains no statements".to_string(),
+            ))
         }
     }