From a762a767ef335050f5b91ca99303a650e78a38fe Mon Sep 17 00:00:00 2001
From: lukaseder <lukas.eder@gmail.com>
Date: Sat, 30 May 2015 09:05:18 +0200
Subject: [PATCH] [#4321] Invalid SQL generated when using nullable data types
 for Derby

---
 .../src/main/java/org/jooq/impl/CreateTableImpl.java | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/jOOQ/src/main/java/org/jooq/impl/CreateTableImpl.java b/jOOQ/src/main/java/org/jooq/impl/CreateTableImpl.java
index 21314468bd..96287c28ee 100644
--- a/jOOQ/src/main/java/org/jooq/impl/CreateTableImpl.java
+++ b/jOOQ/src/main/java/org/jooq/impl/CreateTableImpl.java
@@ -47,6 +47,7 @@ import static org.jooq.Clause.CREATE_TABLE_COLUMNS;
 import static org.jooq.Clause.CREATE_TABLE_NAME;
 // ...
 // ...
+import static org.jooq.SQLDialect.DERBY;
 // ...
 import static org.jooq.SQLDialect.POSTGRES;
 // ...
@@ -179,10 +180,15 @@ class CreateTableImpl<R extends Record> extends AbstractQuery implements
                    .sql(' ');
                 Utils.toSQLDDLTypeDeclaration(ctx, type);
 
-                if (type.nullable())
-                    ctx.sql(' ').keyword("null");
-                else
+                if (type.nullable()) {
+
+                    // [#4321] Not all dialects support explicit NULL type declarations
+                    if (!asList(DERBY).contains(ctx.family()))
+                        ctx.sql(' ').keyword("null");
+                }
+                else {
                     ctx.sql(' ').keyword("not null");
+                }
 
                 if (i < columnFields.size() - 1)
                     ctx.sql(',').formatSeparator();