diff --git a/firstleg/src/main/java/com/baiyue/firstleg/portschedule/mapper/CarrierScheduleQueryMapper.java b/firstleg/src/main/java/com/baiyue/firstleg/portschedule/mapper/CarrierScheduleQueryMapper.java
index 1f3e38eca..274bff0d6 100644
--- a/firstleg/src/main/java/com/baiyue/firstleg/portschedule/mapper/CarrierScheduleQueryMapper.java
+++ b/firstleg/src/main/java/com/baiyue/firstleg/portschedule/mapper/CarrierScheduleQueryMapper.java
@@ -49,8 +49,8 @@ public interface CarrierScheduleQueryMapper extends BaseMapper<CarrierScheduleQu
     @Select("""
         SELECT * FROM fl_carrier_schedule_query
          WHERE status IN ('READY','MANUAL_REQUIRED')
-           AND next_allowed_at IS NOT NULL AND next_allowed_at&lt;=#{now}
-           AND (lease_until IS NULL OR lease_until&lt;#{now})
+           AND next_allowed_at IS NOT NULL AND next_allowed_at <= #{now}
+           AND (lease_until IS NULL OR lease_until < #{now})
          ORDER BY next_allowed_at,id LIMIT #{limit}
         """)
     List<CarrierScheduleQueryEntity> selectDue(@Param("now") LocalDateTime now, @Param("limit") int limit);
@@ -59,8 +59,8 @@ public interface CarrierScheduleQueryMapper extends BaseMapper<CarrierScheduleQu
         UPDATE fl_carrier_schedule_query SET lease_owner=#{owner},lease_until=#{leaseUntil},
           updated_at=CURRENT_TIMESTAMP(3)
          WHERE id=#{id} AND status IN ('READY','MANUAL_REQUIRED')
-           AND next_allowed_at IS NOT NULL AND next_allowed_at&lt;=#{now}
-           AND (lease_until IS NULL OR lease_until&lt;#{now})
+           AND next_allowed_at IS NOT NULL AND next_allowed_at <= #{now}
+           AND (lease_until IS NULL OR lease_until < #{now})
         """)
     int claimLease(@Param("id") long id, @Param("owner") String owner,
                    @Param("now") LocalDateTime now, @Param("leaseUntil") LocalDateTime leaseUntil);
diff --git a/firstleg/src/test/java/com/baiyue/firstleg/portschedule/repository/CarrierScheduleQuerySqlContractTest.java b/firstleg/src/test/java/com/baiyue/firstleg/portschedule/repository/CarrierScheduleQuerySqlContractTest.java
index 817d421d8..ed8d27e52 100644
--- a/firstleg/src/test/java/com/baiyue/firstleg/portschedule/repository/CarrierScheduleQuerySqlContractTest.java
+++ b/firstleg/src/test/java/com/baiyue/firstleg/portschedule/repository/CarrierScheduleQuerySqlContractTest.java
@@ -1,5 +1,8 @@
 package com.baiyue.firstleg.portschedule.repository;
 
+import com.baiyue.firstleg.portschedule.mapper.CarrierScheduleQueryMapper;
+import org.apache.ibatis.annotations.Select;
+import org.apache.ibatis.annotations.Update;
 import org.junit.jupiter.api.Test;
 import org.springframework.core.io.ClassPathResource;
 
@@ -10,6 +13,26 @@ import java.nio.file.Path;
 import static org.assertj.core.api.Assertions.assertThat;
 
 class CarrierScheduleQuerySqlContractTest {
+    @Test
+    void annotationSqlUsesExecutableComparisonOperators() throws Exception {
+        String selectDue = String.join("\n", CarrierScheduleQueryMapper.class
+            .getMethod("selectDue", java.time.LocalDateTime.class, int.class)
+            .getAnnotation(Select.class).value());
+        String claimLease = String.join("\n", CarrierScheduleQueryMapper.class
+            .getMethod("claimLease", long.class, String.class, java.time.LocalDateTime.class,
+                java.time.LocalDateTime.class)
+            .getAnnotation(Update.class).value());
+
+        assertThat(selectDue)
+            .contains("next_allowed_at <= #{now}")
+            .contains("lease_until < #{now}")
+            .doesNotContain("&lt;");
+        assertThat(claimLease)
+            .contains("next_allowed_at <= #{now}")
+            .contains("lease_until < #{now}")
+            .doesNotContain("&lt;");
+    }
+
     @Test
     void definesTaskAttemptsHistoryIdempotencyAndHardLimit() throws Exception {
         assertThat(moduleSql())