--no commit message

--no commit message

h2/src/main/org/h2/command/dml/Update.java

@@ -91,7 +91,12 @@ public class Update extends Prepared {
                         } else if (newExpr == ValueExpression.DEFAULT) {
                             Column column = table.getColumn(i);
                             Expression defaultExpr = column.getDefaultExpression();
-                            Value v = defaultExpr.getValue(session);
+                            Value v;
+                            if (defaultExpr == null) {
+                                v = column.validateConvertUpdateSequence(session, null);
+                            } else {
+                                v = defaultExpr.getValue(session);
+                            }
                             int type = column.getType();
                             newValue = v.convertTo(type);
                         } else {

h2/src/main/org/h2/value/ValueLob.java

@@ -612,7 +612,7 @@ public class ValueLob extends Value {
 
     public boolean equals(Object other) {
         try {
-            return compareSecure((Value) other, null) == 0;
+            return other instanceof ValueLob && compareSecure((Value) other, null) == 0;
         } catch (SQLException e) {
             throw Message.convertToInternal(e);
         }

h2/src/test/org/h2/test/test.in.txt

@@ -37,6 +37,9 @@ select * from test;
 > 3 null
 > rows: 3
 
+update test set a=default;
+> update count: 3
+
 drop table test;
 > ok