fix for H2 2.x

Author: marschall

pom.xml

@@ -209,7 +209,7 @@
       <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-framework-bom</artifactId>
-        <version>5.3.18</version>
+        <version>5.3.19</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
@@ -281,7 +281,7 @@
     <dependency>
       <groupId>com.h2database</groupId>
       <artifactId>h2</artifactId>
-      <version>1.4.200</version>
+      <version>2.1.212</version>
       <scope>test</scope>
     </dependency>
     <dependency>

src/main/java/com/github/marschall/hibernate/batchsequencegenerator/BatchSequenceGenerator.java

@@ -53,13 +53,13 @@
  * <h2>SQL</h2>
  * Per default the generated SELECT will look something like this
  * <pre><code>
- * WITH RECURSIVE t(n, level_num) AS (
- *   SELECT nextval(seq_xxx) as n, 1 as level_num
+ * WITH RECURSIVE t(n) AS (
+ *   SELECT 1
  *     UNION ALL
- *   SELECT nextval(seq_xxx) as n, level_num + 1 as level_num
+ *   SELECT n + 1
  *   FROM t
- *   WHERE level_num &lt; ?)
- * SELECT n
+ *   WHERE n &lt; ?)
+ * SELECT nextval(seq_xxx)
  *   FROM t;
  * </code></pre>
  *
@@ -218,13 +218,13 @@ private static String buildSelect(String sequenceName, Dialect dialect) {
               + " WHERE level_num < ?) "
               + "SELECT n FROM t";
     }
-    return "WITH RECURSIVE t(n, level_num) AS ("
-            + "SELECT " + dialect.getSequenceSupport().getSelectSequenceNextValString(sequenceName) + " as n, 1 as level_num "
+    return "WITH RECURSIVE t(n) AS ("
+            + "SELECT 1 "
             + "UNION ALL "
-            + "SELECT " + dialect.getSequenceSupport().getSelectSequenceNextValString(sequenceName) + " as n, level_num + 1 as level_num "
+            + "SELECT n + 1 "
             + " FROM t "
-            + " WHERE level_num < ?) "
-            + "SELECT n FROM t";
+            + " WHERE n < ?) "
+            + "SELECT " + dialect.getSequenceSupport().getSelectSequenceNextValString(sequenceName) + " FROM t";
   }
 
   private SequenceStructure buildDatabaseStructure(Type type, String sequenceName, JdbcEnvironment jdbcEnvironment, Properties params) {