From 6d365676ded5fa13bb2c15f2193a6d4fe9518c43 Mon Sep 17 00:00:00 2001
From: lukaseder <lukas.eder@gmail.com>
Date: Thu, 15 Feb 2018 17:00:08 +0100
Subject: [PATCH] [#7176] Regression in PostgreSQL MODE function implementation

---
 jOOQ/src/main/java/org/jooq/impl/Mode.java | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/jOOQ/src/main/java/org/jooq/impl/Mode.java b/jOOQ/src/main/java/org/jooq/impl/Mode.java
index 38a2546f19..bb618876f5 100644
--- a/jOOQ/src/main/java/org/jooq/impl/Mode.java
+++ b/jOOQ/src/main/java/org/jooq/impl/Mode.java
@@ -38,6 +38,8 @@
 package org.jooq.impl;
 
 import org.jooq.AggregateFilterStep;
+import org.jooq.DataType;
+import org.jooq.Field;
 import org.jooq.OrderField;
 import org.jooq.OrderedAggregateFunctionOfDeferredType;
 
@@ -46,8 +48,15 @@ import org.jooq.OrderedAggregateFunctionOfDeferredType;
  */
 final class Mode implements OrderedAggregateFunctionOfDeferredType {
 
+    @SuppressWarnings("unchecked")
     @Override
     public final <T> AggregateFilterStep<T> withinGroupOrderBy(OrderField<T> field) {
-        return new Function<T>("mode", ((SortFieldImpl<T>) field).getField().getDataType()).withinGroupOrderBy(field);
+        DataType<T> type = field instanceof SortFieldImpl
+            ? ((SortFieldImpl<T>) field).getField().getDataType()
+            : field instanceof Field
+            ? ((AbstractField<T>) field).getDataType()
+            : (DataType<T>) SQLDataType.NUMERIC;
+
+        return new Function<T>("mode", type).withinGroupOrderBy(field);
     }
 }