Do not parse ORDER and LIMIT in UPDATE clause of MERGE USING

h2/src/main/org/h2/command/Parser.java

@@ -1116,11 +1116,11 @@ public class Parser {
         int start = lastParseIndex;
         TableFilter filter = readSimpleTableFilter(0, null);
         command.setTableFilter(filter);
-        parseUpdateSetClause(command, filter, start);
+        parseUpdateSetClause(command, filter, start, true);
         return command;
     }
 
-    private void parseUpdateSetClause(Update command, TableFilter filter, int start) {
+    private void parseUpdateSetClause(Update command, TableFilter filter, int start, boolean allowExtensions) {
         read("SET");
         if (readIf(OPEN_PAREN)) {
             ArrayList<Column> columns = Utils.newSmallArrayList();
@@ -1154,6 +1154,7 @@ public class Parser {
             Expression condition = readExpression();
             command.setCondition(condition);
         }
+        if (allowExtensions) {
             if (readIf(ORDER)) {
                 // for MySQL compatibility
                 // (this syntax is supported, but ignored)
@@ -1164,6 +1165,7 @@ public class Parser {
                 Expression limit = readTerm().optimize(session);
                 command.setLimit(limit);
             }
+        }
         setSQL(command, "UPDATE", start);
     }
 
@@ -1513,7 +1515,7 @@ public class Parser {
             updateCommand = new Update(session);
             TableFilter filter = command.getTargetTableFilter();
             updateCommand.setTableFilter(filter);
-            parseUpdateSetClause(updateCommand, filter, startMatched);
+            parseUpdateSetClause(updateCommand, filter, startMatched, false);
             startMatched = lastParseIndex;
         }
         Delete deleteCommand = null;