fix potential NPE in MetaTable

h2/src/main/org/h2/table/MetaTable.java

@@ -582,19 +582,17 @@ public class MetaTable extends Table {
             return true;
         }
         Database db = session.getDatabase();
+        Value v;
         if (database.getMode().lowerCaseIdentifiers) {
-            Value v = ValueStringIgnoreCase.get(value);
-            if (indexFrom.equals(indexTo) && db.compare(v, indexFrom) != 0) {
-                return false;
-            }
+            v = ValueStringIgnoreCase.get(value);
         } else {
-            Value v = ValueString.get(value);
-            if (indexFrom != null && db.compare(v, indexFrom) < 0) {
-                return false;
-            }
-            if (indexTo != null && db.compare(v, indexTo) > 0) {
-                return false;
-            }
+            v = ValueString.get(value);
+        }
+        if (indexFrom != null && db.compare(v, indexFrom) < 0) {
+            return false;
+        }
+        if (indexTo != null && db.compare(v, indexTo) > 0) {
+            return false;
         }
         return true;
     }

h2/src/test/org/h2/test/db/TestCompatibility.java

@@ -252,6 +252,10 @@ public class TestCompatibility extends TestBase {
         rs.updateString(2, "Hallo");
         rs.updateRow();
 
+        // we used to have an NPE bug in the MetaTable#checkIndex() method
+        rs = stat.executeQuery("SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME > 'aaaa'");
+        rs = stat.executeQuery("SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME < 'aaaa'");
+        
         stat.execute("CREATE TABLE TEST_1(ID INT PRIMARY KEY) ENGINE=InnoDb");
         stat.execute("CREATE TABLE TEST_2(ID INT PRIMARY KEY) ENGINE=MyISAM");
         stat.execute("CREATE TABLE TEST_3(ID INT PRIMARY KEY) ENGINE=InnoDb charset=UTF8");