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sqlsugar官方文档与基本用法,sqlsugar直接执行sql,sqlsugar分组函数。Sqlsugar官网。sqlsugar在直接执行sql中使用In。sqlsugar 返回第一行第一列

电脑版发表于:2022/2/10 15:23

sqlsugar官方文档
https://www.donet5.com/Home/Doc


sqlsugar基本用法



下载依赖:

  <ItemGroup>
    <PackageReference Include="SqlSugarCore" Version="5.0.5.4" />
  </ItemGroup>

使用:

    class Program
    {
        static void Main(string[] args)
        {
            //创建数据库对象
            SqlSugarClient db = new SqlSugarClient(new ConnectionConfig()
            {
                ConnectionString = "Server=.;Database=OA;uid=sa;password=123456",
                DbType = DbType.SqlServer,
                IsAutoCloseConnection = true
            });

            db.Aop.OnLogExecuting = (sql, pars) =>
            {

                Console.WriteLine(sql);//输出sql
                Console.WriteLine(string.Join(",", pars?.Select(it => it.ParameterName + ":" + it.Value)));//参数
            };

            //查询
            List<Users> List = db.Queryable<Users>().Where(a=>a.Number.Contains("004")).ToList();

            Console.ReadLine();

        }
    }

实体类:

    public class Users
    {
        [SugarColumn(IsPrimaryKey = true, IsIdentity = true)]
        public int Id { get; set; }
        public string UserName { get; set; }
        public string Number { get; set; }
    }


直接执行sql:

直接执行sql的官方文档:https://www.donet5.com/Home/Doc?typeId=1198

基础的查询

var list = SqlSugarHelper.Db.Ado.SqlQuery<statisticsdataday>(sql,new { pubdate = "2022-8-1" }).ToList();

这样也可以:

public List<CourseDTO> GetAllCourseByTeacher(string teacherId)
{
    string sql = @"select ID as CourseId,CourseName from education.course where id in (select CourseID from v_cmcourseteacher where teacherid = @teacherId) and CourseType = 1
                        and TenantID = @TenantID";

    List<SugarParameter> sugarParameters = new List<SugarParameter>(){
        new SugarParameter("@teacherId",teacherId),
        new SugarParameter("@TenantID",TenantID) //执行sql语句
    };

    List<CourseDTO> courseDTOs = Db.Ado.SqlQuery<CourseDTO>(sql, sugarParameters).ToList();
    return courseDTOs;
}

还可以这样,这样可以使用异步的形式:

await Db.SqlQueryable<ScoreOther>(sql)
     .AddParameters(new { StuId = stuId, STime = startDate, ETims = endDate })
     .ToListAsync();



sqlsugar在直接执行sql中使用In

        public List<LabTearchInfoDto> GetTearchInfoByCourseIdListAndStudentId(List<string> courseIdList, string studentId, int tenantID)
        {
            string sql = @"select TeacherID,CourseID from education.cmcourseteacher where CourseID in (@CourseID) and CMID
                        in(select ID from education.classmajor where ClassID in
                        (select ClassID from education.studentclass where Stats = 0 and StudentID = @StudentID and TenantID = @TenantID) )";

            //sql = @"select TeacherID from education.cmcourseteacher where CourseID = '1a9b5c35f6ad47ddab639d39f4c02664' and CMID  in(select ID from education.classmajor where ClassID in  (select ClassID from education.studentclass where Stats = 0 and StudentID = '51399fc9cafc449092a0d0f90e6024af' and TenantID = 32) )";

            List<LabTearchInfoDto> labTearchInfoDtos = Db.Ado.SqlQuery<LabTearchInfoDto>(sql, new { CourseID = courseIdList, StudentID = studentId, TenantID = tenantID }).ToList();

            // 线下库没有配置教员信息,我直接模拟一下数据吧
            //labTearchInfoDtos.Add(new LabTearchInfoDto() { TeacherID= "579cd78257eb4a32a22549b86bcb3f73" });
            //labTearchInfoDtos.Add(new LabTearchInfoDto() { TeacherID = "b6393314ee084f7c8bc41aba11b33f06" });

            return labTearchInfoDtos;
        }



sqlsugar 返回第一行第一列
代码如下:

string sql = @"select COUNT(labr.ID) Count from labtaskresult labr where labr.TenantID = @TenantID and labr.TaskType = 4 and  labr.LastUpdateTime>=@startDate
            and labr.LastUpdateTime<@endDate";

// 开始日期
DateTime startDate = DateTime.Now.Date;
// 结束时间等于今天加一天,因为时间取的是一个范围
DateTime endDate = DateTime.Now.AddDays(1).Date;

int completeCount = Db.Ado.SqlQuery<int>(sql, (new { stId = input.StdetailID, TenantID= input.TenantID, startDate = startDate, endDate = endDate })).FirstOrDefault();




分组函数:

var listM = SqlSugarHelper.Db.Queryable<statisticsdata_month>().WhereIF(query.MajorID != 0, a => a.majorId == query.MajorID)
                        .WhereIF(!string.IsNullOrWhiteSpace(query.RegLevelCode), a => a.levelCode.Contains(query.RegLevelCode))
                        .SplitTable(stime, etime).GroupBy(a => a.pubDate).Select(a => new
                        {
                            pubDate = a.pubDate,
                            reqCount = SqlSugar.SqlFunc.AggregateSum(a.reqCount),
                            positionCount = SqlSugar.SqlFunc.AggregateSum(a.positionCount)
                        }).OrderBy(a => a.pubDate, SqlSugar.OrderByType.Asc).ToList();



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