diff --git a/pom.xml b/pom.xml
index 3d87a7c..6c197a1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
 
     <groupId>org.jminiorm</groupId>
     <artifactId>jminiorm</artifactId>
-    <version>0.0.24</version>
+    <version>0.0.26</version>
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
diff --git a/src/main/java/org/jminiorm/dialect/GenericSQLDialect.java b/src/main/java/org/jminiorm/dialect/GenericSQLDialect.java
index 85b5b98..3bc604b 100644
--- a/src/main/java/org/jminiorm/dialect/GenericSQLDialect.java
+++ b/src/main/java/org/jminiorm/dialect/GenericSQLDialect.java
@@ -80,10 +80,9 @@ protected String sqlForSelectIdEscaped(String schema, List<String> columns, Stri
                 (orderBy == null ? "" : ("ORDER BY " + orderBy + "\n"));
     }
 
-
     @Override
     public String sqlForCreateSchema(String schema) {
-        return "CREATE SCHEMA IF NOT EXISTS " + identifier(schema, true);
+        return "CREATE SCHEMA IF NOT EXISTS " + identifier(schema, false);
     }
 
     @Override
diff --git a/src/main/java/org/jminiorm/dialect/SybaseASASQLDialect.java b/src/main/java/org/jminiorm/dialect/SybaseASASQLDialect.java
index 72e1ef4..d699b49 100644
--- a/src/main/java/org/jminiorm/dialect/SybaseASASQLDialect.java
+++ b/src/main/java/org/jminiorm/dialect/SybaseASASQLDialect.java
@@ -11,6 +11,23 @@ protected String sqlForAutoIncrement() {
         return "DEFAULT AUTOINCREMENT";
     }
 
+    @Override
+    public String sqlForCreateSchema(String schema) {
+        // SybaseASA does not support the common concept of schema, however a schema is auto-created par user, with an identical name
+        // the user created is never used for login so the password has not to be known
+        // as no IF NOT EXISTS is available, it is better not to use it for the moment
+        // return "CREATE USER " + identifier(schema, false) + " IDENTIFIED BY " + quoteIdentifier(UUID.randomUUID().toString());
+        return null;
+    }
+
+    @Override
+    protected String sqlForColumnType(Class<?> javaType, Integer length, Integer scale, Integer precision,
+                                      boolean generated) {
+        if ((javaType == Boolean.class) || (javaType == boolean.class))
+            return "INTEGER";
+        else return super.sqlForColumnType(javaType, length, scale, precision, generated);
+    }
+
     @Override
     public String sqlForSelect(String sql, Integer limit, Integer offset) {
         String expr = "";
@@ -22,5 +39,4 @@ public String sqlForSelect(String sql, Integer limit, Integer offset) {
         sql = sql.replaceAll("(?i)^select ", "select " + expr);
         return sql;
     }
-
 }
diff --git a/src/main/java/org/jminiorm/query/orm/AbstractORMQuery.java b/src/main/java/org/jminiorm/query/orm/AbstractORMQuery.java
index a0dc816..abbd109 100644
--- a/src/main/java/org/jminiorm/query/orm/AbstractORMQuery.java
+++ b/src/main/java/org/jminiorm/query/orm/AbstractORMQuery.java
@@ -35,7 +35,7 @@ protected void verifySchemaExistence() {
         String schema = getMapping().getSchema();
         if (schema != null && !schema.isEmpty()) {
             String sql = getQueryTarget().getConfig().getDialect().sqlForCreateSchema(schema);
-            getQueryTarget().sql(sql);
+            if (sql != null) getQueryTarget().sql(sql);
         }
     }
 }
diff --git a/src/test/java/org/jminiorm/SchemaBean.java b/src/test/java/org/jminiorm/SchemaBean.java
index c899cf5..58fb9c0 100644
--- a/src/test/java/org/jminiorm/SchemaBean.java
+++ b/src/test/java/org/jminiorm/SchemaBean.java
@@ -20,10 +20,13 @@ public class SchemaBean {
 	@Column(name = "short_text", length = 16)
 	private String shortText;
 	private String longText;
+	@Column(name = "the_date")
 	private Date date;
 	private LocalDate localDate;
 	private LocalDateTime localDateTime;
 	private Integer someInt;
+	// solution for a database without support of BOOLEAN
+	// @Column(columnDefinition = "INTEGER")
 	private Boolean someBoolean;
 	private byte[] bytes;
 	@Enumerated(EnumType.ORDINAL)
diff --git a/src/test/java/org/jminiorm/TestSchemaQueries.java b/src/test/java/org/jminiorm/TestSchemaQueries.java
index 2de2688..34c5d99 100644
--- a/src/test/java/org/jminiorm/TestSchemaQueries.java
+++ b/src/test/java/org/jminiorm/TestSchemaQueries.java
@@ -63,18 +63,18 @@ public void testBatchExecutionMode() throws Exception {
         testQueriesOnDatabase(db);
     }
 
-    // @Test
-    // public void testPostgreSQL() throws Exception {
-    // Database db;
-    // IDatabaseConfig config;
-    // config = new DatabaseConfig.Builder()
-    // .dataSource("jdbc:postgresql://localhost/jminiorm", "jminiorm", "jminiorm")
-    // .statementExecutor(new DefaultStatementExecutor())
-    // .dialect(new PostgreSQLDialect())
-    // .build();
-    // db = new Database(config);
-    // testQueriesOnDatabase(db);
-    // }
+//    @Test
+//    public void testPostgreSQL() throws Exception {
+//        Database db;
+//        IDatabaseConfig config;
+//        config = new DatabaseConfig.Builder()
+//                .dataSource("jdbc:postgresql://localhost/jminiorm", "jminiorm", "jminiorm")
+//                .statementExecutor(new DefaultStatementExecutor())
+//                .dialect(new PostgreSQLDialect())
+//                .build();
+//        db = new Database(config);
+//        testQueriesOnDatabase(db);
+//    }
 
     protected void testQueriesOnDatabase(IDatabase db) throws Exception {
         // Table creation :