From 21cb7f775605fc16ba8d0d10f7cad03c370e4910 Mon Sep 17 00:00:00 2001
From: Kirill Kurdyukov <kurdyukov-kir@ydb.tech>
Date: Thu, 10 Sep 2026 15:08:51 +0300
Subject: [PATCH] Restore BCE date predicate contract

---
 ydb-trino-adapter/ROADMAP.md                              | 4 +++-
 .../src/main/java/tech/ydb/trino/YdbClient.java           | 8 +++++++-
 .../test/java/tech/ydb/trino/TestYdbConnectorTest.java    | 6 ------
 3 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/ydb-trino-adapter/ROADMAP.md b/ydb-trino-adapter/ROADMAP.md
index 89fe9311..e85a052b 100644
--- a/ydb-trino-adapter/ROADMAP.md
+++ b/ydb-trino-adapter/ROADMAP.md
@@ -136,7 +136,9 @@ unsupported behavior, record:
 2. an authoritative documentation link or tracked upstream issue;
 3. a focused negative test that proves the connector fails clearly.
 
-The existing negative-date overrides need this treatment.
+The remaining negative-date overrides need this treatment. Date predicates with
+BCE bounds stay in Trino as residual filters so they do not bind an unsupported
+value to YDB.
 YDB `Date` starts at the Unix epoch; see
 [primitive types](https://ydb.tech/docs/en/yql/reference/types/primitive).
 CHAR is rejected with the focused inherited contract
diff --git a/ydb-trino-adapter/src/main/java/tech/ydb/trino/YdbClient.java b/ydb-trino-adapter/src/main/java/tech/ydb/trino/YdbClient.java
index ba7105e2..b9cf2cbb 100644
--- a/ydb-trino-adapter/src/main/java/tech/ydb/trino/YdbClient.java
+++ b/ydb-trino-adapter/src/main/java/tech/ydb/trino/YdbClient.java
@@ -374,7 +374,13 @@ private static ColumnMapping dateColumnMapping() {
         return ColumnMapping.longMapping(
                 DATE,
                 dateReadFunctionUsingLocalDate(),
-                dateWriteFunctionUsingLocalDate());
+                dateWriteFunctionUsingLocalDate(),
+                (session, domain) -> domain.getValues().getRanges().getOrderedRanges().stream()
+                        .anyMatch(range ->
+                                (!range.isLowUnbounded() && (long) range.getLowBoundedValue() < 0) ||
+                                        (!range.isHighUnbounded() && (long) range.getHighBoundedValue() < 0))
+                        ? DISABLE_PUSHDOWN.apply(session, domain)
+                        : FULL_PUSHDOWN.apply(session, domain));
     }
 
     private static ColumnMapping timestampColumnMapping() {
diff --git a/ydb-trino-adapter/src/test/java/tech/ydb/trino/TestYdbConnectorTest.java b/ydb-trino-adapter/src/test/java/tech/ydb/trino/TestYdbConnectorTest.java
index 11f8d34f..dca58db3 100644
--- a/ydb-trino-adapter/src/test/java/tech/ydb/trino/TestYdbConnectorTest.java
+++ b/ydb-trino-adapter/src/test/java/tech/ydb/trino/TestYdbConnectorTest.java
@@ -89,12 +89,6 @@ public void testInsertNegativeDate() {
         // YDB не поддерживает, negative daysSinceEpoch
     }
 
-    @Test
-    @Override
-    public void testDateYearOfEraPredicate() {
-        // YDB не поддерживает, negative daysSinceEpoch
-    }
-
     @Test
     @Override
     public void testCreateTableAsSelectNegativeDate() {