Fix array element reference

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

@@ -3892,10 +3892,7 @@ public class Parser {
         if (readIf(OPEN_BRACKET)) {
             Function function = Function.getFunction(database, "ARRAY_GET");
             function.setParameter(0, r);
-            r = readExpression();
-            r = new BinaryOperation(OpType.PLUS, r, ValueExpression.get(ValueInt
-                    .get(1)));
-            function.setParameter(1, r);
+            function.setParameter(1, readExpression());
             r = function;
             read(CLOSE_BRACKET);
         }

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

@@ -440,7 +440,7 @@ public class TestFunctions extends TestDb implements AggregateFunction {
         stat.execute("create alias dynamic deterministic for \"" +
                 getClass().getName() + ".dynamic\"");
         setCount(0);
-        rs = stat.executeQuery("call dynamic(('a', 1))[0]");
+        rs = stat.executeQuery("call dynamic(('a', 1))[1]");
         rs.next();
         String a = rs.getString(1);
         assertEquals("a1", a);

h2/src/test/org/h2/test/scripts/datatypes/array.sql

@@ -2,3 +2,15 @@
 -- and the EPL 1.0 (http://h2database.com/html/license.html).
 -- Initial Developer: H2 Group
 --
+
+SELECT (10, 20, 30)[1];
+>> 10
+
+SELECT (10, 20, 30)[3];
+>> 30
+
+SELECT (10, 20, 30)[0];
+>> null
+
+SELECT (10, 20, 30)[4];
+>> null