From 7f4cb85f005bb04c6c4b374f57772fbf601c7e1c Mon Sep 17 00:00:00 2001
From: Lukas Eder <lukas.eder@gmail.com>
Date: Fri, 22 Oct 2021 15:54:43 +0200
Subject: [PATCH] [jOOQ/jOOQ#12425] Fixed regression in CREATE DOMAIN

---
 jOOQ/src/main/java/org/jooq/impl/CreateDomainImpl.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/jOOQ/src/main/java/org/jooq/impl/CreateDomainImpl.java b/jOOQ/src/main/java/org/jooq/impl/CreateDomainImpl.java
index b6d49289e6..6c844b34c5 100644
--- a/jOOQ/src/main/java/org/jooq/impl/CreateDomainImpl.java
+++ b/jOOQ/src/main/java/org/jooq/impl/CreateDomainImpl.java
@@ -192,7 +192,7 @@ implements
         if (default_ != null)
             ctx.formatSeparator().visit(K_DEFAULT).sql(' ').visit(default_);
 
-        if (constraints != null)
+        if (!Tools.isEmpty(constraints))
             if (ctx.family() == FIREBIRD)
                 ctx.formatSeparator().visit(DSL.check(DSL.and(Tools.map(constraints, c -> ((ConstraintImpl) c).$check()))));
             else