From 633e85fdf329561d17f1741648675839268d7d68 Mon Sep 17 00:00:00 2001
From: Mark Nguyen <marknguyen@retool.com>
Date: Sat, 6 Jun 2026 14:12:42 -0700
Subject: [PATCH] fix(postgres): Allow casting to UUID array

---
 pegjs/postgresql.pegjs | 6 +++---
 test/postgres.spec.js  | 7 +++++++
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/pegjs/postgresql.pegjs b/pegjs/postgresql.pegjs
index 7322b7020..dfa4915d4 100644
--- a/pegjs/postgresql.pegjs
+++ b/pegjs/postgresql.pegjs
@@ -5742,15 +5742,15 @@ data_type
 
 
 array_type
-  = t:(numeric_type / character_string_type / text_type) __ LBRAKE __ RBRAKE __ LBRAKE __ RBRAKE {
+  = t:(numeric_type / character_string_type / text_type / uuid_type) __ LBRAKE __ RBRAKE __ LBRAKE __ RBRAKE {
     /* => data_type */
     return { ...t, array: { dimension: 2 } }
   }
-  / t:(numeric_type / character_string_type / text_type) __ LBRAKE __ l:literal_numeric? __ RBRAKE {
+  / t:(numeric_type / character_string_type / text_type / uuid_type) __ LBRAKE __ l:literal_numeric? __ RBRAKE {
     /* => data_type */
     return { ...t, array: { dimension: 1,  length: [l] } }
   }
-  / t:(numeric_type / character_string_type / text_type) __ KW_ARRAY {
+  / t:(numeric_type / character_string_type / text_type / uuid_type) __ KW_ARRAY {
     /* => data_type */
     return { ...t, array: { keyword: 'array' } }
   }
diff --git a/test/postgres.spec.js b/test/postgres.spec.js
index b85da66ae..e47391f61 100644
--- a/test/postgres.spec.js
+++ b/test/postgres.spec.js
@@ -2072,6 +2072,13 @@ describe('Postgres', () => {
         'CREATE TABLE "test_table" (id INT NOT NULL, vector TSVECTOR)'
       ]
     },
+    {
+      title: 'cast to uuid array type',
+      sql: [
+        `SELECT string_to_array('a,b', ',')::uuid[]`,
+        `SELECT string_to_array('a,b', ',')::UUID[]`
+      ]
+    },
   ]
   function neatlyNestTestedSQL(sqlList){
     sqlList.forEach(sqlInfo => {