diff --git a/jOOQ/src/main/java/org/jooq/impl/AbstractCondition.java b/jOOQ/src/main/java/org/jooq/impl/AbstractCondition.java
index aa4749234d..a40d3ce3a6 100644
--- a/jOOQ/src/main/java/org/jooq/impl/AbstractCondition.java
+++ b/jOOQ/src/main/java/org/jooq/impl/AbstractCondition.java
@@ -64,15 +64,6 @@ abstract class AbstractCondition extends AbstractField<Boolean> implements Condi
         super(DSL.name("condition"), SQLDataType.BOOLEAN);
     }
 
-    /**
-     * [#10179] Subclasses may override this method to indicate that the
-     * condition may produce <code>TRUE</code>, <code>FALSE</code>, or
-     * <code>NULL</code>.
-     */
-    boolean isNullable() {
-        return true;
-    }
-
     @Override
     public Clause[] clauses(Context<?> ctx) {
         return CLAUSES;
diff --git a/jOOQ/src/main/java/org/jooq/impl/AbstractField.java b/jOOQ/src/main/java/org/jooq/impl/AbstractField.java
index 53597bd8c4..52a56b6d52 100644
--- a/jOOQ/src/main/java/org/jooq/impl/AbstractField.java
+++ b/jOOQ/src/main/java/org/jooq/impl/AbstractField.java
@@ -121,6 +121,15 @@ implements
     // XXX: API (not implemented)
     // ------------------------------------------------------------------------
 
+    /**
+     * [#10179] [#14665] Subclasses may override this method to indicate that
+     * the condition may produce <code>TRUE</code>, <code>FALSE</code>, or
+     * <code>NULL</code>.
+     */
+    boolean isNullable() {
+        return true;
+    }
+
     @Override
     public abstract void accept(Context<?> ctx);
 
diff --git a/jOOQ/src/main/java/org/jooq/impl/Exists.java b/jOOQ/src/main/java/org/jooq/impl/Exists.java
index 831930af95..bac589c709 100644
--- a/jOOQ/src/main/java/org/jooq/impl/Exists.java
+++ b/jOOQ/src/main/java/org/jooq/impl/Exists.java
@@ -85,15 +85,15 @@ implements
     // XXX: QueryPart API
     // -------------------------------------------------------------------------
 
-
-
-    private static final Clause[] CLAUSES_EXISTS = { Clause.CONDITION, Clause.CONDITION_EXISTS };
-
     @Override
     final boolean isNullable() {
         return false;
     }
 
+
+
+    private static final Clause[] CLAUSES_EXISTS = { Clause.CONDITION, Clause.CONDITION_EXISTS };
+
     @Override
     final boolean parenthesised(Context<?> ctx) {
         return true;
diff --git a/jOOQ/src/main/java/org/jooq/impl/IsDistinctFrom.java b/jOOQ/src/main/java/org/jooq/impl/IsDistinctFrom.java
index 65895d475c..12698edeb7 100644
--- a/jOOQ/src/main/java/org/jooq/impl/IsDistinctFrom.java
+++ b/jOOQ/src/main/java/org/jooq/impl/IsDistinctFrom.java
@@ -88,6 +88,11 @@ implements
     // XXX: QueryPart API
     // -------------------------------------------------------------------------
 
+    @Override
+    final boolean isNullable() {
+        return false;
+    }
+
 
 
     static final Set<SQLDialect> EMULATE_DISTINCT_PREDICATE  = SQLDialect.supportedUntil(CUBRID, DERBY);
@@ -97,11 +102,6 @@ implements
 
 
 
-    @Override
-    final boolean isNullable() {
-        return false;
-    }
-
     @Override
     public final void accept(Context<?> ctx) {
 
diff --git a/jOOQ/src/main/java/org/jooq/impl/IsNotDistinctFrom.java b/jOOQ/src/main/java/org/jooq/impl/IsNotDistinctFrom.java
index 9f35351a72..e6f8e9b78b 100644
--- a/jOOQ/src/main/java/org/jooq/impl/IsNotDistinctFrom.java
+++ b/jOOQ/src/main/java/org/jooq/impl/IsNotDistinctFrom.java
@@ -88,13 +88,13 @@ implements
     // XXX: QueryPart API
     // -------------------------------------------------------------------------
 
-
-
     @Override
     final boolean isNullable() {
         return false;
     }
 
+
+
     @Override
     public final void accept(Context<?> ctx) {
 
diff --git a/jOOQ/src/main/java/org/jooq/impl/IsNotNull.java b/jOOQ/src/main/java/org/jooq/impl/IsNotNull.java
index 16c586b29f..3a86f6eef3 100644
--- a/jOOQ/src/main/java/org/jooq/impl/IsNotNull.java
+++ b/jOOQ/src/main/java/org/jooq/impl/IsNotNull.java
@@ -85,15 +85,15 @@ implements
     // XXX: QueryPart API
     // -------------------------------------------------------------------------
 
-
-
-    private static final Clause[] CLAUSES = { Clause.CONDITION, Clause.CONDITION_IS_NOT_NULL };
-
     @Override
     final boolean isNullable() {
         return false;
     }
 
+
+
+    private static final Clause[] CLAUSES = { Clause.CONDITION, Clause.CONDITION_IS_NOT_NULL };
+
     @Override
     public final void accept(Context<?> ctx) {
 
diff --git a/jOOQ/src/main/java/org/jooq/impl/IsNull.java b/jOOQ/src/main/java/org/jooq/impl/IsNull.java
index ddb045e81a..38b2c451be 100644
--- a/jOOQ/src/main/java/org/jooq/impl/IsNull.java
+++ b/jOOQ/src/main/java/org/jooq/impl/IsNull.java
@@ -85,15 +85,15 @@ implements
     // XXX: QueryPart API
     // -------------------------------------------------------------------------
 
-
-
-    private static final Clause[] CLAUSES = { Clause.CONDITION, Clause.CONDITION_IS_NULL };
-
     @Override
     final boolean isNullable() {
         return false;
     }
 
+
+
+    private static final Clause[] CLAUSES = { Clause.CONDITION, Clause.CONDITION_IS_NULL };
+
     @Override
     public final void accept(Context<?> ctx) {
 
diff --git a/jOOQ/src/main/java/org/jooq/impl/JSONArray.java b/jOOQ/src/main/java/org/jooq/impl/JSONArray.java
index 9c7c3a19c6..0a6a78330b 100644
--- a/jOOQ/src/main/java/org/jooq/impl/JSONArray.java
+++ b/jOOQ/src/main/java/org/jooq/impl/JSONArray.java
@@ -134,6 +134,11 @@ implements
     // XXX: QueryPart API
     // -------------------------------------------------------------------------
 
+    @Override
+    final boolean isNullable() {
+        return false;
+    }
+
 
 
     @Override
diff --git a/jOOQ/src/main/java/org/jooq/impl/JSONEntryImpl.java b/jOOQ/src/main/java/org/jooq/impl/JSONEntryImpl.java
index 72264ce712..0ce20610fd 100644
--- a/jOOQ/src/main/java/org/jooq/impl/JSONEntryImpl.java
+++ b/jOOQ/src/main/java/org/jooq/impl/JSONEntryImpl.java
@@ -309,6 +309,8 @@ final class JSONEntryImpl<T> extends AbstractQueryPart implements JSONEntry<T>,
 
 
 
+
+
     @SuppressWarnings("unchecked")
     private static Field<String> booleanCase(Field<?> field) {
         return case_((Field<Boolean>) field).when(inline(true), inline("true")).when(inline(false), inline("false"));
diff --git a/jOOQ/src/main/java/org/jooq/impl/JSONObject.java b/jOOQ/src/main/java/org/jooq/impl/JSONObject.java
index 99fc79276e..80d6f35466 100644
--- a/jOOQ/src/main/java/org/jooq/impl/JSONObject.java
+++ b/jOOQ/src/main/java/org/jooq/impl/JSONObject.java
@@ -134,6 +134,11 @@ implements
     // XXX: QueryPart API
     // -------------------------------------------------------------------------
 
+    @Override
+    final boolean isNullable() {
+        return false;
+    }
+
 
 
     @Override
diff --git a/jOOQ/src/main/java/org/jooq/impl/JSONObjectAgg.java b/jOOQ/src/main/java/org/jooq/impl/JSONObjectAgg.java
index 354f475029..b72a78b6b9 100644
--- a/jOOQ/src/main/java/org/jooq/impl/JSONObjectAgg.java
+++ b/jOOQ/src/main/java/org/jooq/impl/JSONObjectAgg.java
@@ -183,6 +183,11 @@ implements
 
 
 
+
+
+
+
+
 
 
 
diff --git a/jOOQ/src/main/java/org/jooq/impl/NullCondition.java b/jOOQ/src/main/java/org/jooq/impl/NullCondition.java
index 810ea02816..d412c4e4c5 100644
--- a/jOOQ/src/main/java/org/jooq/impl/NullCondition.java
+++ b/jOOQ/src/main/java/org/jooq/impl/NullCondition.java
@@ -71,11 +71,6 @@ implements
     static final NullCondition    INSTANCE = new NullCondition();
     static final Set<SQLDialect>  NO_SUPPORT_UNTYPED_NULL = SQLDialect.supportedBy(DERBY, HSQLDB);
 
-    @Override
-    final boolean isNullable() {
-        return true;
-    }
-
     @Override
     final boolean parenthesised(Context<?> ctx) {
         return !NO_SUPPORT_UNTYPED_NULL.contains(ctx.dialect())