Merge pull request #60 from kanzihuang/feature-export-databases

fix: 前端 DBMS->数据操作->新建查询，页面不显示查询结果

server/internal/db/api/db.go

@@ -174,9 +174,15 @@ func (d *Db) ExecSqlFile(rc *req.Ctx) {
 	go func() {
 		defer func() {
 			if err := recover(); err != nil {
+				var errInfo string
 				switch t := err.(type) {
+				case biz.BizError:
+					errInfo = t.Error()
 				case *biz.BizError:
-					d.MsgApp.CreateAndSend(rc.LoginAccount, ws.ErrMsg("sql脚本执行失败", fmt.Sprintf("[%s]%s执行失败: [%s]", filename, dbConn.Info.GetLogDesc(), t.Error())))
+					errInfo = t.Error()
+				}
+				if len(errInfo) > 0 {
+					d.MsgApp.CreateAndSend(rc.LoginAccount, ws.ErrMsg("sql脚本执行失败", fmt.Sprintf("[%s]%s执行失败: [%s]", filename, dbConn.Info.GetLogDesc(), errInfo)))
 				}
 			}
 		}()

server/internal/db/application/db.go

@@ -302,7 +302,7 @@ func selectDataByDb(db *sql.DB, selectSql string) ([]string, []map[string]any, e
 	err := walkTableRecord(db, selectSql, func(record map[string]any, columns []string) {
 		result = append(result, record)
 		if colNames == nil {
-			colNames = make([]string, 0, len(columns))
+			colNames = make([]string, len(columns))
 			copy(colNames, columns)
 		}
 	})