From 5f25ed0738b2d12d835412481a36f9f88e041d4e Mon Sep 17 00:00:00 2001
From: "Levy A." <levyddsa@gmail.com>
Date: Tue, 20 May 2025 02:38:34 -0300
Subject: [PATCH] fix UNIQUE constraints

---
 core/translate/mod.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/core/translate/mod.rs b/core/translate/mod.rs
index 1e0b05ea8..ba72e0c53 100644
--- a/core/translate/mod.rs
+++ b/core/translate/mod.rs
@@ -158,6 +158,15 @@ pub fn translate_inner(
                         )));
                     }
 
+                    if btree.unique_sets.as_ref().is_some_and(|set| {
+                        set.iter()
+                            .any(|set| set.iter().any(|(column_name, _)| column_name == &column))
+                    }) {
+                        return Err(LimboError::ParseError(format!(
+                            "cannot drop column \"{column}\": UNIQUE"
+                        )));
+                    }
+
                     btree.columns.remove(dropped_col);
 
                     let sql = btree.to_sql();