diff --git a/deploy/sql/海外区域统一增量-MySQL8.sql b/deploy/sql/海外区域统一增量-MySQL8.sql
index 5729d61f6..f55d4aed9 100644
--- a/deploy/sql/海外区域统一增量-MySQL8.sql
+++ b/deploy/sql/海外区域统一增量-MySQL8.sql
@@ -4189,7 +4189,8 @@ CREATE TABLE ll_selfop_sku_daily_sales (
   quantity_unit VARCHAR(32) NOT NULL COMMENT '同一统计维度内一致的业务单位',
   PRIMARY KEY (id),
   UNIQUE KEY uk_selfop_daily_version (sales_run_id,source_account,customer_code,warehouse_code,sku_code,business_date),
-  KEY idx_selfop_daily_window (sales_run_id,business_date,customer_code,sku_code),
+  KEY idx_selfop_daily_window_cover (sales_run_id,source_account,warehouse_code,business_date,customer_code,sku_code,outbound_quantity,outbound_order_count,quantity_unit),
+  KEY idx_selfop_daily_sku_cover (sales_run_id,source_account,warehouse_code,customer_code,sku_code,business_date,outbound_quantity,outbound_order_count,quantity_unit),
   CONSTRAINT chk_selfop_sku_daily_sales CHECK (outbound_quantity >= 0 AND outbound_order_count >= 0)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin COMMENT='完整销量版本的稀疏日事实';
 
diff --git a/lastleg-service/src/main/java/com/baiyue/lastleg/selfoperated/analytics/query/AnalyticsReadSql.java b/lastleg-service/src/main/java/com/baiyue/lastleg/selfoperated/analytics/query/AnalyticsReadSql.java
index 6277a2f3f..05ac48fb3 100644
--- a/lastleg-service/src/main/java/com/baiyue/lastleg/selfoperated/analytics/query/AnalyticsReadSql.java
+++ b/lastleg-service/src/main/java/com/baiyue/lastleg/selfoperated/analytics/query/AnalyticsReadSql.java
@@ -28,7 +28,8 @@ public final class AnalyticsReadSql {
         }
         return sql;
     }
-    private static String cte(String kind){
+    private static String cte(AnalyticsSqlRequest request){
+        String kind=request.kind();
         if("HOT".equals(kind))return hotSalesCte();
         if("SLOW".equals(kind))return rankingCte();
         String localEvidence="CONVERT_TZ(evidence_at_utc,'+00:00','+08:00')";
@@ -91,7 +92,11 @@ public final class AnalyticsReadSql {
             // Aggregate facts before joining SKU evidence. Repeating boundary expressions
             // inside every fact's SUM dominated the long-window MySQL execution profile.
             int rangeStart=sql.indexOf(" ranged AS (");int rangeEnd=sql.indexOf(" metric_sales AS (",rangeStart);
-            sql=sql.substring(0,rangeStart)+" ranged AS (SELECT d.customer_code,d.sku_code,SUM(d.outbound_quantity) observed_sum,"
+            // Only the measured maximum chart window uses SKU-ordered coverage; short windows retain date-range access.
+            String rangedHint=request.from()!=null&&request.until()!=null
+                &&java.time.temporal.ChronoUnit.DAYS.between(request.from(),request.until())==366
+                ?"/*+ INDEX(d idx_selfop_daily_sku_cover) */ ":"";
+            sql=sql.substring(0,rangeStart)+" ranged AS (SELECT "+rangedHint+"d.customer_code,d.sku_code,SUM(d.outbound_quantity) observed_sum,"
                 +"COUNT(*) actual_days,SUM(d.outbound_order_count) order_sum,MIN(d.quantity_unit) min_unit,MAX(d.quantity_unit) max_unit,"
                 +"SUM(CASE WHEN d.business_date>=#{p.completeFrom} AND d.business_date<#{p.completeUntil} AND d.business_date<#{p.anchor} THEN 1 ELSE 0 END) actual_complete "
                 +"FROM ll_selfop_sku_daily_sales d WHERE d.sales_run_id=#{p.salesRun} AND"+KEY_FILTER
@@ -168,7 +173,7 @@ public final class AnalyticsReadSql {
     public static String page(java.util.Map<String,Object> parameters){
         var p=(AnalyticsSqlRequest)parameters.get("p");
         if("HOT".equals(p.kind()))return typed(hotPage(),p);
-        return typed(cte(p.kind())+"SELECT customer_code,sku_code,product_name,quantity_unit,evidence_at_utc,unit_valid,observed_quantity,sku_order_count,"
+        return typed(cte(p)+"SELECT customer_code,sku_code,product_name,quantity_unit,evidence_at_utc,unit_valid,observed_quantity,sku_order_count,"
             +"complete_day_count,partial_day_count,unknown_day_count,window_quantity,window_sku_order_count,sales30_quantity,today_quantity,"
             +"physical_quantity,available_quantity,frozen_quantity,transit_quantity,inventory_observed_at_utc,inventory_quality,inventory_reason "
             +"FROM result"+filter(p.kind()).stripTrailing()+" ORDER BY "+order(p.kind())+" LIMIT #{p.size} OFFSET #{p.offset}",p);
@@ -236,7 +241,7 @@ public final class AnalyticsReadSql {
             "CASE WHEN inventory_quality<>'VALID' THEN CONCAT('INVENTORY_',inventory_quality) WHEN available_quantity<=0 THEN 'NO_AVAILABLE_INVENTORY' "
             +"WHEN window_quantity IS NULL THEN 'SALES_WINDOW_UNAVAILABLE' ELSE 'OBSERVATION_INSUFFICIENT' END";
         String eligible=filter(p.kind()).replace(" WHERE ","").strip();
-        return typed(cte(p.kind())+", classified AS (SELECT CASE WHEN "+eligible+" THEN 1 ELSE 0 END eligible,"
+        return typed(cte(p)+", classified AS (SELECT CASE WHEN "+eligible+" THEN 1 ELSE 0 END eligible,"
             +reason+" reason FROM result), counts AS (SELECT eligible,CASE WHEN eligible=1 THEN NULL ELSE reason END reason,COUNT(*) amount "
             +"FROM classified GROUP BY eligible,CASE WHEN eligible=1 THEN NULL ELSE reason END) "
             +"SELECT LEAST(SUM(CASE WHEN eligible=1 THEN amount ELSE 0 END) OVER (),100) total,reason,"
diff --git a/lastleg-service/src/main/resources/db/lastleg.sql b/lastleg-service/src/main/resources/db/lastleg.sql
index 8f73597aa..fe085941e 100644
--- a/lastleg-service/src/main/resources/db/lastleg.sql
+++ b/lastleg-service/src/main/resources/db/lastleg.sql
@@ -3902,7 +3902,8 @@ CREATE TABLE ll_selfop_sku_daily_sales (
   quantity_unit VARCHAR(32) NOT NULL COMMENT '同一统计维度内一致的业务单位',
   PRIMARY KEY (id),
   UNIQUE KEY uk_selfop_daily_version (sales_run_id,source_account,customer_code,warehouse_code,sku_code,business_date),
-  KEY idx_selfop_daily_window (sales_run_id,business_date,customer_code,sku_code),
+  KEY idx_selfop_daily_window_cover (sales_run_id,source_account,warehouse_code,business_date,customer_code,sku_code,outbound_quantity,outbound_order_count,quantity_unit),
+  KEY idx_selfop_daily_sku_cover (sales_run_id,source_account,warehouse_code,customer_code,sku_code,business_date,outbound_quantity,outbound_order_count,quantity_unit),
   CONSTRAINT chk_selfop_sku_daily_sales CHECK (outbound_quantity >= 0 AND outbound_order_count >= 0)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin COMMENT='完整销量版本的稀疏日事实';
 
diff --git a/lastleg-service/src/test/java/com/baiyue/lastleg/schema/SelfoperatedAnalyticsSchemaContractTest.java b/lastleg-service/src/test/java/com/baiyue/lastleg/schema/SelfoperatedAnalyticsSchemaContractTest.java
index fa2a3cefb..9cb6904e9 100644
--- a/lastleg-service/src/test/java/com/baiyue/lastleg/schema/SelfoperatedAnalyticsSchemaContractTest.java
+++ b/lastleg-service/src/test/java/com/baiyue/lastleg/schema/SelfoperatedAnalyticsSchemaContractTest.java
@@ -80,7 +80,11 @@ class SelfoperatedAnalyticsSchemaContractTest {
         }
         assertTrue(run.contains("uk_selfop_inventory_daily (source_account,warehouse_code,inventory_daily_sample_date)"));
         assertTrue(run.contains("CONSTRAINT chk_selfop_inventory_daily CHECK"));
-        assertTrue(ddl.get("ll_selfop_sku_daily_sales").contains("idx_selfop_daily_window (sales_run_id,business_date,customer_code,sku_code)"));
+        var daily = ddl.get("ll_selfop_sku_daily_sales");
+        assertTrue(daily.contains("KEY idx_selfop_daily_window_cover (sales_run_id,source_account,warehouse_code,business_date,customer_code,sku_code,outbound_quantity,outbound_order_count,quantity_unit)"));
+        assertTrue(daily.contains("KEY idx_selfop_daily_sku_cover (sales_run_id,source_account,warehouse_code,customer_code,sku_code,business_date,outbound_quantity,outbound_order_count,quantity_unit)"));
+        assertFalse(daily.contains("KEY idx_selfop_daily_window ("));
+        assertTrue(daily.contains("UNIQUE KEY uk_selfop_daily_version (sales_run_id,source_account,customer_code,warehouse_code,sku_code,business_date)"));
         assertTrue(ddl.get("ll_selfop_outbound_order").contains("idx_selfop_order_daily (source_account,warehouse_code,sales_eligible,business_date,id)"));
         assertTrue(ddl.get("ll_selfop_sync_stage").contains("stage_batch_id,object_type,object_key_hash"));
         assertTrue(ddl.get("ll_selfop_sync_stage").contains("observation_sequence IS NOT NULL"));
diff --git a/lastleg-service/src/test/java/com/baiyue/lastleg/selfoperated/analytics/query/AnalyticsSqlSemanticTest.java b/lastleg-service/src/test/java/com/baiyue/lastleg/selfoperated/analytics/query/AnalyticsSqlSemanticTest.java
index ef5843649..16cc56a8e 100644
--- a/lastleg-service/src/test/java/com/baiyue/lastleg/selfoperated/analytics/query/AnalyticsSqlSemanticTest.java
+++ b/lastleg-service/src/test/java/com/baiyue/lastleg/selfoperated/analytics/query/AnalyticsSqlSemanticTest.java
@@ -42,6 +42,42 @@ public class AnalyticsSqlSemanticTest {
     public static LocalDateTime convertZone(LocalDateTime value,String from,String to) {
         return value==null?null:value.atOffset(ZoneOffset.of(from)).withOffsetSameInstant(ZoneOffset.of(to)).toLocalDateTime();
     }
+    @Test void skuOrderedCoverHintIsLimitedToExactly366DaySummary() {
+        for(int days:List.of(1,7,30,365,366,367)) {
+            var p=request("SUMMARY",D.minusDays(days),D,null,null,utc(D,8),0,20);
+            String sql=AnalyticsReadSql.page(Map.of("p",p));
+            String hint="/*+ INDEX(d idx_selfop_daily_sku_cover) */";
+            assertEquals(days==366,sql.contains(hint),"window="+days);
+            if(days==366) {
+                assertTrue(sql.contains("ranged AS (SELECT "+hint+" d.customer_code"));
+                assertEquals(sql.indexOf(hint),sql.lastIndexOf(hint));
+            }
+            assertFalse(AnalyticsReadSql.count(Map.of("p",p)).contains("INDEX("));
+        }
+        for(String kind:List.of("HOT","SLOW","INVENTORY")) {
+            var p=request(kind,D.minusDays(366),D,null,null,utc(D,8),0,20);
+            assertFalse(AnalyticsReadSql.page(Map.of("p",p)).contains("INDEX("),kind);
+        }
+    }
+    @Test void hinted366DaySummaryPreservesSparseZeroUnknownAndDateBoundaries() throws Exception {
+        LocalDate from=D.minusDays(365),until=D.plusDays(1);
+        profile(11,"C","SOLD","VALID_OUTBOUND",utc(from,0),"PCS");
+        profile(22,"C","ZERO","INVENTORY_OBSERVATION",utc(from,0),"PCS");
+        profile(22,"C","UNKNOWN","NONE",null,"PCS");
+        daily(11,"W","C","SOLD",from,"2");daily(11,"W","C","SOLD",D,"3");
+        daily(11,"W","C","SOLD",from.minusDays(1),"999");daily(11,"W","C","SOLD",until,"999");
+        daily(33,"W","C","SOLD",from,"999");daily(11,"OTHER","C","SOLD",from,"999");
+        var p=new AnalyticsSqlRequest("demo","W",null,null,11,22,from,until,D,D.minusDays(30),from,D,
+            utc(from,0),utc(D,8),true,true,false,true,true,0,20,"SUMMARY");
+        assertEquals(3,mapper.count(p));var rows=page(p);assertEquals(3,rows.size());
+        var sold=rows.get(0);assertEquals("SOLD",sold.skuCode());assertDecimal("5",sold.observedQuantity());
+        assertEquals(2L,sold.skuOrderCount());assertEquals(365,sold.completeDayCount());
+        assertEquals(1,sold.partialDayCount());assertEquals(0,sold.unknownDayCount());
+        var zero=rows.get(1);assertEquals("ZERO",zero.skuCode());assertDecimal("0",zero.observedQuantity());
+        assertEquals(365,zero.completeDayCount());assertEquals(1,zero.partialDayCount());
+        var unknown=rows.get(2);assertEquals("UNKNOWN",unknown.skuCode());assertNull(unknown.observedQuantity());
+        assertEquals(0,unknown.completeDayCount());assertEquals(0,unknown.partialDayCount());assertEquals(366,unknown.unknownDayCount());
+    }
     @Test void sqlReturnsTwoCompleteDaysAndTodayPartialObservedFive() throws Exception {
         profile(11,"C","SKU","VALID_OUTBOUND",utc(D.minusDays(40),0),"PCS");
         profile(22,"C","SKU","INVENTORY_OBSERVATION",utc(D.minusDays(35),0),"PCS");