彻底解决 sql 兼容性问题

internal/service/stock_service.go

@@ -5,7 +5,6 @@ import (
 	"sort"
 
 	"gorm.io/gorm"
-	"level_go/internal/dbcompat"
 	"level_go/internal/model"
 )
 
@@ -46,7 +45,7 @@ func (s *StockService) AnalyzePerformance(startDate, endDate string) ([]model.An
 
 	// 查询 startDate 当日涨停股，并优先使用涨停合并表中的计算最高价。
 	query := `SELECT l.ts_code, l.name, d.open, COALESCE(l.calc_high, d.high, 0) AS high FROM stock_limit_combined_data l
-              LEFT JOIN stock_daily d ON ` + dbcompat.TsCodeEqual("l.ts_code", "d.ts_code") + ` AND l.trade_date = d.trade_date
+              LEFT JOIN stock_daily d ON l.ts_code = d.ts_code AND l.trade_date = d.trade_date
               WHERE l.trade_date = ? AND l.final_status = 1`
 
 	if err := s.DB.Raw(query, startDate).Scan(&limits).Error; err != nil {