The built-in functions "power" and "radians" now always return a double.

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

@@ -2269,9 +2269,7 @@ public class Function extends Expression implements FunctionCall {
             break;
         case ABS:
         case FLOOR:
-        case RADIANS:
         case ROUND:
-        case POWER:
             t = p0.getType();
             s = p0.getScale();
             p = p0.getPrecision();

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

@@ -63,6 +63,7 @@ public class TestFunctions extends TestBase implements AggregateFunction {
     @Override
     public void test() throws Exception {
         deleteDb("functions");
+        testDataType();
         testVersion();
         testFunctionTable();
         testFunctionTableVarArgs();
@@ -99,6 +100,19 @@ public class TestFunctions extends TestBase implements AggregateFunction {
         deleteDb("functions");
         FileUtils.deleteRecursive(TEMP_DIR, true);
     }
+    
+    private void testDataType() throws SQLException {
+        Connection conn = getConnection("functions");
+        Statement stat = conn.createStatement();
+        assertEquals(Types.DOUBLE, stat.executeQuery(
+                "select radians(x) from dual").
+                getMetaData().getColumnType(1));
+        assertEquals(Types.DOUBLE, stat.executeQuery(
+                "select power(10, 2*x) from dual").
+                getMetaData().getColumnType(1));
+        stat.close();
+        conn.close();
+    }
 
     private void testVersion() throws SQLException {
         Connection conn = getConnection("functions");