From 5d3780f25df53978f4d3289c4a02bc5ecd2f3cb3 Mon Sep 17 00:00:00 2001
From: Pekka Enberg <penberg@iki.fi>
Date: Mon, 25 Aug 2025 11:12:41 +0300
Subject: [PATCH] core/translate: Add `CREATE INDEX IF NOT EXISTS` support

Fixes #2263
---
 core/translate/index.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/core/translate/index.rs b/core/translate/index.rs
index ef574f6af..7d332f0d2 100644
--- a/core/translate/index.rs
+++ b/core/translate/index.rs
@@ -44,6 +44,10 @@ pub fn translate_create_index(
     // Check if the index is being created on a valid btree table and
     // the name is globally unique in the schema.
     if !schema.is_unique_idx_name(&idx_name) {
+        // If IF NOT EXISTS is specified, silently return without error
+        if unique_if_not_exists.1 {
+            return Ok(program);
+        }
         crate::bail_parse_error!("Error: index with name '{idx_name}' already exists.");
     }
     let Some(tbl) = schema.tables.get(&tbl_name) else {