feat(export): 增强SQL构建逻辑以支持YMT数据源的ID过滤

- 在BuildSQL函数中添加对reseller_id_eq和merchant_id_eq的处理逻辑，确保在YMT数据源下有效过滤无效ID
- 更新去重逻辑以支持YMT数据源的特定需求，提升SQL构建的灵活性
- 优化聚合查询时的字段别名处理，确保主表字段正确引用
- 增强代码可读性，确保逻辑清晰明了

server/internal/exporter/sqlbuilder.go

@@ -245,6 +245,19 @@ func BuildSQL(req BuildRequest, whitelist map[string]bool) (string, []interface{
 			delete(req.Filters, "merchant_id_eq")
 		}
 	}
+	// normalize reseller_id_eq (YMT 直连 merchant_id)
+	if req.Datasource == "ymt" && (req.MainTable == "order" || req.MainTable == "order_info") {
+		if v, ok := req.Filters["reseller_id_eq"]; ok {
+			if isZeroID(v) {
+				delete(req.Filters, "reseller_id_eq")
+			} else {
+				if _, has := req.Filters["merchant_id_in"]; !has {
+					req.Filters["merchant_id_in"] = []interface{}{v}
+				}
+				delete(req.Filters, "reseller_id_eq")
+			}
+		}
+	}
 
 	// helper: treat "0"/0/空 as未提供的 ID
 	isZeroID := func(v interface{}) bool {
@@ -520,7 +533,13 @@ func BuildSQL(req BuildRequest, whitelist map[string]bool) (string, []interface{
 		sb.WriteString(" WHERE ")
 		sb.WriteString(strings.Join(where, " AND "))
 	}
-	needDedupe := req.Datasource == "marketing" && req.MainTable == "order" && (need["order_voucher"] || need["voucher"] || need["voucher_batch"] || need["key_batch"] || need["code_batch"])
+	needDedupe := false
+	if req.Datasource == "marketing" && req.MainTable == "order" && (need["order_voucher"] || need["voucher"] || need["voucher_batch"] || need["key_batch"] || need["code_batch"]) {
+		needDedupe = true
+	}
+	if req.Datasource == "ymt" && (req.MainTable == "order" || req.MainTable == "order_info") && (need["order_digit"] || need["order_voucher"] || need["voucher"] || need["voucher_batch"]) {
+		needDedupe = true
+	}
 	if needDedupe {
 		// Extract alias names in order
 		aliases := make([]string, 0, len(cols))
@@ -545,8 +564,8 @@ func BuildSQL(req BuildRequest, whitelist map[string]bool) (string, []interface{
 			}
 			sources = append(sources, src)
 		}
-		mt := sch.TableName(req.MainTable)
+		// 聚合时按别名分组：主表字段别名始终是 req.MainTable.order_number
-		pkCol, _ := sch.MapField(req.MainTable, "order_number")
+		pkAlias := req.MainTable + ".order_number"
 		var out strings.Builder
 		out.WriteString("SELECT ")
 		for i := range aliases {
@@ -563,7 +582,7 @@ func BuildSQL(req BuildRequest, whitelist map[string]bool) (string, []interface{
 		}
 		out.WriteString(" FROM (")
 		out.WriteString(sb.String())
-		out.WriteString(") AS sub GROUP BY sub.`" + mt + "." + pkCol + "`")
+		out.WriteString(") AS sub GROUP BY sub.`" + pkAlias + "`")
 		return out.String(), args, nil
 	}
 	return sb.String(), args, nil
@@ -596,20 +615,51 @@ func BuildCountSQL(req BuildRequest, whitelist map[string]bool) (string, []inter
 			need[tbl] = true
 		}
 	}
+	// normalize merchant_id_eq / reseller_id_eq for YMT: skip 0/空, 非零转为 merchant_id_in 以便与 creator_in 做 OR
+	if v, ok := req.Filters["merchant_id_eq"]; ok {
+		if isZeroID(v) {
+			delete(req.Filters, "merchant_id_eq")
+		} else {
+			if _, has := req.Filters["merchant_id_in"]; !has {
+				req.Filters["merchant_id_in"] = []interface{}{v}
+			}
+			delete(req.Filters, "merchant_id_eq")
+		}
+	}
+	if req.Datasource == "ymt" && (req.MainTable == "order" || req.MainTable == "order_info") {
+		if v, ok := req.Filters["reseller_id_eq"]; ok {
+			if isZeroID(v) {
+				delete(req.Filters, "reseller_id_eq")
+			} else {
+				if _, has := req.Filters["merchant_id_in"]; !has {
+					req.Filters["merchant_id_in"] = []interface{}{v}
+				}
+				delete(req.Filters, "reseller_id_eq")
+			}
+		}
+	}
 	// Handle creator_in and merchant_id_in with OR logic if both exist
 	var creatorArgs []interface{}
 	hasCreator := false
 	if v, ok := req.Filters["creator_in"]; ok {
 		switch t := v.(type) {
 		case []interface{}:
-			creatorArgs = t
+			for _, x := range t {
+				if !isZeroID(x) {
+					creatorArgs = append(creatorArgs, x)
+				}
+			}
 		case []int:
 			for _, x := range t {
-				creatorArgs = append(creatorArgs, x)
+				if !isZeroID(x) {
+					creatorArgs = append(creatorArgs, x)
+				}
 			}
 		case []string:
 			for _, x := range t {
-				creatorArgs = append(creatorArgs, x)
+				if !isZeroID(x) {
+					creatorArgs = append(creatorArgs, x)
+				}
 			}
 		}
 		if len(creatorArgs) > 0 {
@@ -622,14 +672,22 @@ func BuildCountSQL(req BuildRequest, whitelist map[string]bool) (string, []inter
 	if v, ok := req.Filters["merchant_id_in"]; ok {
 		switch t := v.(type) {
 		case []interface{}:
-			merchantArgs = t
+			for _, x := range t {
+				if !isZeroID(x) {
+					merchantArgs = append(merchantArgs, x)
+				}
+			}
 		case []int:
 			for _, x := range t {
-				merchantArgs = append(merchantArgs, x)
+				if !isZeroID(x) {
+					merchantArgs = append(merchantArgs, x)
+				}
 			}
 		case []string:
 			for _, x := range t {
-				merchantArgs = append(merchantArgs, x)
+				if !isZeroID(x) {
+					merchantArgs = append(merchantArgs, x)
+				}
 			}
 		}
 		if len(merchantArgs) > 0 {