From 5c82b72e5fde11580ff9d329f21a94c54bdf8a6b Mon Sep 17 00:00:00 2001
From: Jussi Saurio <jussi.saurio@gmail.com>
Date: Wed, 24 Sep 2025 09:54:43 +0300
Subject: [PATCH] fix INSERT INTO t DEFAULT VALUES

---
 core/translate/insert.rs | 22 ++++++++++++++++++----
 testing/insert.test      |  8 ++++++++
 2 files changed, 26 insertions(+), 4 deletions(-)

diff --git a/core/translate/insert.rs b/core/translate/insert.rs
index f760a8106..e82f39e46 100644
--- a/core/translate/insert.rs
+++ b/core/translate/insert.rs
@@ -348,10 +348,24 @@ pub fn translate_insert(
                 (result.num_result_cols, cursor_id)
             }
         }
-        InsertBody::DefaultValues => (
-            0,
-            program.alloc_cursor_id(CursorType::BTreeTable(btree_table.clone())),
-        ),
+        InsertBody::DefaultValues => {
+            let num_values = table.columns().len();
+            values = Some(
+                table
+                    .columns()
+                    .iter()
+                    .map(|c| {
+                        c.default
+                            .clone()
+                            .unwrap_or(Box::new(ast::Expr::Literal(ast::Literal::Null)))
+                    })
+                    .collect(),
+            );
+            (
+                num_values,
+                program.alloc_cursor_id(CursorType::BTreeTable(btree_table.clone())),
+            )
+        }
     };
     let has_upsert = upsert_opt.is_some();
 
diff --git a/testing/insert.test b/testing/insert.test
index dbd20af3f..059e42f54 100755
--- a/testing/insert.test
+++ b/testing/insert.test
@@ -633,3 +633,11 @@ do_execsql_test_on_specific_db {:memory:} boolean-literal-edgecase-false {
     CREATE TABLE false (id INTEGER, true TEXT);
     INSERT INTO false (id, true) VALUES (1, false) RETURNING id, false;
 } {1|0}
+
+do_execsql_test_on_specific_db {:memory:} default-values-population {
+    CREATE TABLE t (x INTEGER PRIMARY KEY, y DEFAULT 666, z);
+    INSERT INTO t DEFAULT VALUES;
+    INSERT INTO t DEFAULT VALUES;
+    SELECT * FROM t;
+} {1|666|
+2|666|}
\ No newline at end of file