ARRAY_GET returned the wrong data type.

h2/src/main/org/h2/expression/Function.java

@@ -302,7 +302,7 @@ public class Function extends Expression implements FunctionCall {
         addFunctionWithNull("CASE", CASE, VAR_ARGS, Value.NULL);
         addFunctionNotConst("NEXTVAL", NEXTVAL, VAR_ARGS, Value.LONG);
         addFunctionNotConst("CURRVAL", CURRVAL, VAR_ARGS, Value.LONG);
-        addFunction("ARRAY_GET", ARRAY_GET, 2, Value.NULL);
+        addFunction("ARRAY_GET", ARRAY_GET, 2, Value.STRING);
         addFunction("CSVREAD", CSVREAD, VAR_ARGS, Value.RESULT_SET, false, false);
         addFunction("CSVWRITE", CSVWRITE, VAR_ARGS, Value.INT, false, false);
         addFunctionNotConst("MEMORY_FREE", MEMORY_FREE, 0, Value.INT);
@@ -1652,7 +1652,6 @@ public class Function extends Expression implements FunctionCall {
         case ROUND:
         case TRUNCATE:
         case POWER:
-        case ARRAY_GET:
             dataType = p0.getType();
             scale = p0.getScale();
             precision = p0.getPrecision();

h2/src/main/org/h2/res/help.csv

@@ -2754,7 +2754,7 @@ YEAR(CREATED)
 "
 
 "Functions (System)","ARRAY_GET","
-ARRAY_GET(arrayExpression, indexExpression): value
+ARRAY_GET(arrayExpression, indexExpression): varchar
 ","
 Returns one element of an array.
 ","

h2/src/test/org/h2/test/jdbc/TestMetaData.java

@@ -238,6 +238,16 @@ public class TestMetaData extends TestBase {
         assertEquals(Types.VARCHAR, type);
         rs = conn.createStatement().executeQuery("SELECT COUNT(*) C FROM DUAL");
         assertEquals("C", rs.getMetaData().getColumnName(1));
+
+        Statement stat = conn.createStatement();
+        stat.execute("create table a(x array)");
+        stat.execute("insert into a values((1, 2))");
+        rs = stat.executeQuery("SELECT x[1] FROM a");
+        ResultSetMetaData meta = rs.getMetaData();
+        assertEquals(Types.VARCHAR, meta.getColumnType(1));
+        rs.next();
+        assertEquals(String.class.getName(), rs.getObject(1).getClass().getName());
+        stat.execute("drop table a");
     }
 
     private void testColumnPrecision() throws SQLException {