diff --git a/jOOQ-test/configuration/org/jooq/configuration/lukas/sybase/library.xml b/jOOQ-test/configuration/org/jooq/configuration/lukas/sybase/library.xml
index dcb100dc2b..b32100dad6 100644
--- a/jOOQ-test/configuration/org/jooq/configuration/lukas/sybase/library.xml
+++ b/jOOQ-test/configuration/org/jooq/configuration/lukas/sybase/library.xml
@@ -52,6 +52,15 @@
                     <name>BIT</name>
                     <expressions>(?i:(.*?.)?T_BOOLEANS.(VC|C|N)_BOOLEAN)</expressions>
                 </forcedType>
+                
+                <!-- 
+                  [#965] Sybase SQL Anywhere doesn't support what other
+                  databases consider a SIGNED TINYINT
+                  -->
+                <forcedType>
+                    <name>SIGNED TINYINT</name>
+                    <expressions>(?i:(.*?.)?T_639_NUMBERS_TABLE.BYTE)</expressions>
+                </forcedType>
 
                 <forcedType>
                     <name>org.jooq.test._.converters.Boolean_YES_NO_LC</name>
diff --git a/jOOQ-test/src/org/jooq/test/SybaseTest.java b/jOOQ-test/src/org/jooq/test/SybaseTest.java
index 609c51bc9e..95437ad6a4 100644
--- a/jOOQ-test/src/org/jooq/test/SybaseTest.java
+++ b/jOOQ-test/src/org/jooq/test/SybaseTest.java
@@ -44,6 +44,7 @@ import static org.jooq.test.sybase.generatedclasses.Tables.T_EXOTIC_TYPES;
 import static org.jooq.test.sybase.generatedclasses.Tables.T_IDENTITY;
 import static org.jooq.test.sybase.generatedclasses.Tables.T_IDENTITY_PK;
 import static org.jooq.test.sybase.generatedclasses.Tables.T_TRIGGERS;
+import static org.jooq.test.sybase.generatedclasses.Tables.T_UNSIGNED;
 import static org.jooq.test.sybase.generatedclasses.Tables.V_AUTHOR;
 import static org.jooq.test.sybase.generatedclasses.Tables.V_BOOK;
 import static org.jooq.test.sybase.generatedclasses.Tables.V_LIBRARY;
@@ -86,6 +87,7 @@ import org.jooq.test.sybase.generatedclasses.tables.records.TExoticTypesRecord;
 import org.jooq.test.sybase.generatedclasses.tables.records.TIdentityPkRecord;
 import org.jooq.test.sybase.generatedclasses.tables.records.TIdentityRecord;
 import org.jooq.test.sybase.generatedclasses.tables.records.TTriggersRecord;
+import org.jooq.test.sybase.generatedclasses.tables.records.TUnsignedRecord;
 import org.jooq.test.sybase.generatedclasses.tables.records.T_639NumbersTableRecord;
 import org.jooq.test.sybase.generatedclasses.tables.records.T_725LobTestRecord;
 import org.jooq.test.sybase.generatedclasses.tables.records.T_785Record;
@@ -117,7 +119,7 @@ public class SybaseTest extends jOOQAbstractTest<
         TBooleansRecord,
         XUnusedRecord,
         TTriggersRecord,
-        XUnusedRecord,
+        TUnsignedRecord,
         TExoticTypesRecord,
         TIdentityRecord,
         TIdentityPkRecord,
@@ -257,28 +259,28 @@ public class SybaseTest extends jOOQAbstractTest<
     }
 
     @Override
-    protected Table<XUnusedRecord> TUnsigned() {
-        return null;
+    protected Table<TUnsignedRecord> TUnsigned() {
+        return T_UNSIGNED;
     }
 
     @Override
-    protected TableField<XUnusedRecord, UByte> TUnsigned_U_BYTE() {
-        return null;
+    protected TableField<TUnsignedRecord, UByte> TUnsigned_U_BYTE() {
+        return T_UNSIGNED.U_BYTE;
     }
 
     @Override
-    protected TableField<XUnusedRecord, UShort> TUnsigned_U_SHORT() {
-        return null;
+    protected TableField<TUnsignedRecord, UShort> TUnsigned_U_SHORT() {
+        return T_UNSIGNED.U_SHORT;
     }
 
     @Override
-    protected TableField<XUnusedRecord, UInteger> TUnsigned_U_INT() {
-        return null;
+    protected TableField<TUnsignedRecord, UInteger> TUnsigned_U_INT() {
+        return T_UNSIGNED.U_INT;
     }
 
     @Override
-    protected TableField<XUnusedRecord, ULong> TUnsigned_U_LONG() {
-        return null;
+    protected TableField<TUnsignedRecord, ULong> TUnsigned_U_LONG() {
+        return T_UNSIGNED.U_LONG;
     }
 
     @Override
diff --git a/jOOQ-test/src/org/jooq/test/sybase/create.sql b/jOOQ-test/src/org/jooq/test/sybase/create.sql
index b37e318294..664979ec7b 100644
--- a/jOOQ-test/src/org/jooq/test/sybase/create.sql
+++ b/jOOQ-test/src/org/jooq/test/sybase/create.sql
@@ -40,6 +40,7 @@ DROP TABLE IF EXISTS t_658_22/
 DROP TABLE IF EXISTS t_658_32/
 DROP TABLE IF EXISTS t_725_lob_test/
 DROP TABLE IF EXISTS t_785/
+DROP TABLE IF EXISTS t_unsigned/
 DROP TABLE IF EXISTS t_booleans/
 DROP TABLE IF EXISTS t_identity/
 DROP TABLE IF EXISTS t_identity_pk/
@@ -87,6 +88,14 @@ CREATE TABLE t_booleans (
 )
 /
 
+CREATE TABLE t_unsigned (
+  u_byte unsigned tinyint null,
+  u_short unsigned smallint null,
+  u_int unsigned int null,
+  u_long unsigned bigint null
+)
+/
+
 CREATE TABLE t_triggers (
   id_generated int IDENTITY not null,
   id int null,
diff --git a/jOOQ/src/main/java/org/jooq/util/sybase/SybaseDataType.java b/jOOQ/src/main/java/org/jooq/util/sybase/SybaseDataType.java
index 6e241c92f4..df9b6033e8 100644
--- a/jOOQ/src/main/java/org/jooq/util/sybase/SybaseDataType.java
+++ b/jOOQ/src/main/java/org/jooq/util/sybase/SybaseDataType.java
@@ -41,6 +41,10 @@ import org.jooq.DataType;
 import org.jooq.SQLDialect;
 import org.jooq.impl.DefaultDataType;
 import org.jooq.impl.SQLDataType;
+import org.jooq.types.UByte;
+import org.jooq.types.UInteger;
+import org.jooq.types.ULong;
+import org.jooq.types.UShort;
 
 /**
  * Supported data types for the {@link SQLDialect#SYBASE} dialect
@@ -54,14 +58,15 @@ public class SybaseDataType {
     // Default SQL data types and synonyms thereof
     // -------------------------------------------------------------------------
 
-    public static final DataType<Byte>       TINYINT                    = new DefaultDataType<Byte>(SQLDialect.SYBASE, SQLDataType.TINYINT, "tinyint");
+    public static final DataType<UByte>      UNSIGNEDTINYINT            = new DefaultDataType<UByte>(SQLDialect.SYBASE, SQLDataType.TINYINTUNSIGNED, "unsigned tinyint");
+    public static final DataType<UByte>      TINYINT                    = new DefaultDataType<UByte>(SQLDialect.SYBASE, SQLDataType.TINYINTUNSIGNED, "tinyint");
     public static final DataType<Short>      SMALLINT                   = new DefaultDataType<Short>(SQLDialect.SYBASE, SQLDataType.SMALLINT, "smallint");
-    public static final DataType<Short>      UNSIGNEDSMALLLINT          = new DefaultDataType<Short>(SQLDialect.SYBASE, SQLDataType.SMALLINT, "unsignedsmallint");
+    public static final DataType<UShort>     UNSIGNEDSMALLLINT          = new DefaultDataType<UShort>(SQLDialect.SYBASE, SQLDataType.SMALLINTUNSIGNED, "unsigned smallint");
     public static final DataType<Integer>    INT                        = new DefaultDataType<Integer>(SQLDialect.SYBASE, SQLDataType.INTEGER, "int");
     public static final DataType<Integer>    INTEGER                    = new DefaultDataType<Integer>(SQLDialect.SYBASE, SQLDataType.INTEGER, "integer");
-    public static final DataType<Integer>    UNSIGNEDINT                = new DefaultDataType<Integer>(SQLDialect.SYBASE, SQLDataType.INTEGER, "unsignedint");
+    public static final DataType<UInteger>   UNSIGNEDINT                = new DefaultDataType<UInteger>(SQLDialect.SYBASE, SQLDataType.INTEGERUNSIGNED, "unsigned int");
     public static final DataType<Long>       BIGINT                     = new DefaultDataType<Long>(SQLDialect.SYBASE, SQLDataType.BIGINT, "bigint");
-    public static final DataType<Long>       UNSIGNEDBIGINT             = new DefaultDataType<Long>(SQLDialect.SYBASE, SQLDataType.BIGINT, "unsignedbigint");
+    public static final DataType<ULong>      UNSIGNEDBIGINT             = new DefaultDataType<ULong>(SQLDialect.SYBASE, SQLDataType.BIGINTUNSIGNED, "unsigned bigint");
     public static final DataType<Double>     DOUBLE                     = new DefaultDataType<Double>(SQLDialect.SYBASE, SQLDataType.DOUBLE, "double");
     public static final DataType<Double>     FLOAT                      = new DefaultDataType<Double>(SQLDialect.SYBASE, SQLDataType.FLOAT, "float");
     public static final DataType<Float>      REAL                       = new DefaultDataType<Float>(SQLDialect.SYBASE, SQLDataType.REAL, "real");
@@ -90,6 +95,8 @@ public class SybaseDataType {
 
     protected static final DataType<byte[]>  __BLOB                     = new DefaultDataType<byte[]>(SQLDialect.SYBASE, SQLDataType.BLOB, "binary");
     protected static final DataType<Boolean> __BOOLEAN                  = new DefaultDataType<Boolean>(SQLDialect.SYBASE, SQLDataType.BOOLEAN, "bit");
+    protected static final DataType<Byte>    __BYTE                     = new DefaultDataType<Byte>(SQLDialect.SYBASE, SQLDataType.TINYINT, "tinyint");
+    protected static final DataType<Byte>    __BYTESIGNED               = new DefaultDataType<Byte>(SQLDialect.SYBASE, SQLDataType.TINYINT, "signed tinyint");
 
     // -------------------------------------------------------------------------
     // Compatibility types for supported Java types