From 31196094f294485d8bf6e04abe5414e251d07dfb Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Fri, 15 May 2026 11:19:46 +0000
Subject: [PATCH] perf: batch DROP COLUMN requests in nativeWorker

Replaced sequential `worker.call('run')` calls for dropping columns with a single `worker.call('execBatch')`. This eliminates N+1 IPC round-trips to the txiki-js native runtime when deleting multiple columns, significantly reducing latency and improving DDL modification performance.
---
 src/nativeWorker.ts | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/nativeWorker.ts b/src/nativeWorker.ts
index 031a813..decd529 100644
--- a/src/nativeWorker.ts
+++ b/src/nativeWorker.ts
@@ -676,8 +676,11 @@ export async function createNativeDatabaseConnection(
 
             case 'column_drop':
               if (deletedColumns) {
-                  for (const col of deletedColumns) {
-                      await worker.call('run', [`ALTER TABLE ${escapeIdentifier(targetTable)} DROP COLUMN ${escapeIdentifier(col.name)}`]);
+                  const batch = deletedColumns.map(col => ({
+                      sql: `ALTER TABLE ${escapeIdentifier(targetTable)} DROP COLUMN ${escapeIdentifier(col.name)}`
+                  }));
+                  if (batch.length > 0) {
+                      await worker.call('execBatch', [batch]);
                   }
               }
               break;