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603 lines
27 KiB
603 lines
27 KiB
using OrmTest.Models;
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using SqlSugar;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace OrmTest.Demo
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{
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public class Query : DemoBase
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{
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public static void Init()
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{
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Easy();
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Page();
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Where();
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Join();
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Funs();
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Select();
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Ado();
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Group();
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Sqlable();
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Tran();
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StoredProcedure();
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Enum();
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Simple();
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Async();
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Subqueryable();
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SqlQueryable();
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}
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private static void SqlQueryable()
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{
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var db = GetInstance();
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var list = db.SqlQueryable<Student>("select * from student").ToPageList(1, 2);
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}
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private static void Subqueryable()
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{
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var db = GetInstance();
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var i = 0;
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var sumflat2num = db.Queryable<Student, Student>((s1, s2) =>
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new object[] { JoinType.Left, s1.Id == s2.Id })
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.Select((s1, s2) => new Student
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{ Id = SqlFunc.IsNull(SqlFunc.AggregateSum(SqlFunc.IIF(s1.Id ==1, s1.Id, s1.Id * -1)), 0) })
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.First();
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var getAll11 = db.Queryable<Student>().Where(it => SqlFunc.Subqueryable<School>().Where(s => s.Id == it.Id).Max(s=>s.Id)==i).ToList();
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var getAll12 = db.Queryable<Student>().Where(it => SqlFunc.Subqueryable<School>().Where(s => s.Id == it.Id).Max(s => s.Id) == 1).ToList();
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var getAll7 = db.Queryable<Student>().Where(it => SqlFunc.Subqueryable<School>().Where(s => s.Id == it.Id).Any()).ToList();
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var getAll9 = db.Queryable<Student>().Where(it => SqlFunc.Subqueryable<School>().Where(s => s.Id == it.Id).Count()==1).ToList();
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var getAll10 = db.Queryable<Student>().Where(it => SqlFunc.Subqueryable<School>().Where(s => s.Id == it.Id).OrderBy(s=>s.Id).Select(s=>s.Id) == 1).ToList();
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var getAll14 = db.Queryable<Student>().Where(it => SqlFunc.Subqueryable<School>().Where(s => s.Id == it.Id).OrderByDesc(s => s.Id).Select(s => s.Id) == 1).ToList();
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var getAll8= db.Queryable<Student>().Where(it => SqlFunc.Subqueryable<School>().Where(s => s.Id == it.Id).Where(s=>s.Name==it.Name).NotAny()).ToList();
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var getAll1 = db.Queryable<Student>().Where(it => it.Id == SqlFunc.Subqueryable<School>().Where(s => s.Id == it.Id).Select(s => s.Id)).ToList();
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var getAll2 = db.Queryable<Student, School>((st, sc) => new object[] {
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JoinType.Left,st.Id==sc.Id
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})
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.Where(st => st.Id == SqlFunc.Subqueryable<School>().Where(s => s.Id == st.Id).Select(s => s.Id))
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.ToList();
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var getAll3 = db.Queryable<Student, School>((st, sc) => new object[] {
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JoinType.Left,st.Id==sc.Id
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})
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.Select(st =>
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new
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{
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name = st.Name,
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id = SqlFunc.Subqueryable<School>().Where(s => s.Id == st.Id).Select(s => s.Id)
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})
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.ToList();
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var getAll4 = db.Queryable<Student>().Select(it =>
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new
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{
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name = it.Name,
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id = SqlFunc.Subqueryable<School>().Where(s => s.Id == it.Id).Select(s => s.Id)
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}).ToList();
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var getAll5 = db.Queryable<Student>().Select(it =>
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new Student
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{
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Name = it.Name,
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Id = SqlFunc.Subqueryable<School>().Where(s => s.Id == it.Id).Select(s => s.Id)
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}).ToList();
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var getAll6 = db.Queryable<Student>().Select(it =>
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new
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{
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name = it.Name,
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id = SqlFunc.Subqueryable<Student>().Where(s => s.Id == it.Id).Sum(s => (int)s.SchoolId)
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}).ToList();
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var getAll66 = db.Queryable<Student>().Select(it =>
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new
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{
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name = it.Name,
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id = SqlFunc.Subqueryable<Student>().Where(s => s.Id == it.Id).Sum(s =>s.SchoolId.Value)
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}).ToList();
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var getAll666 = db.Queryable<Student>().Select(it =>
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new
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{
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name = it.Name,
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id = SqlFunc.Subqueryable<Student>().Where(s => s.Id == it.Id).Min(s => s.Id)
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}).ToList();
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}
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private static void Async()
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{
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var db = GetInstance();
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var list = db.Queryable<Student>().Where(it => it.Id == 1).SingleAsync();
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list.Wait();
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var list2 = db.Queryable<Student>().SingleAsync(it => it.Id == 1);
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list2.Wait();
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var list3 = db.Queryable<Student>().Where(it => it.Id == 1).ToListAsync();
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list3.Wait();
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var list4 = db.Queryable<Student>().Where(it => it.Id == 1).ToPageListAsync(1, 2);
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list4.Wait();
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}
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private static void Simple()
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{
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//SqlSugarClient
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var db = GetInstance();
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var student1 = db.Queryable<Student>().InSingle(1);
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//get SimpleClient
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var sdb = db.SimpleClient;
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var student2 = sdb.GetById<Student>(1);
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sdb.DeleteById<Student>(1);
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sdb.Insert(new Student() { Name = "xx" });
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sdb.Update<Student>(it => new Student { Name = "newvalue" }, it => it.Id == 1);//only update name where id=1
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sdb.Update(new Student() { Name = "newavalue", Id = 1 });//update all where id=1
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//SimpleClient Get SqlSugarClient
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var student3 = sdb.FullClient.Queryable<Student>().InSingle(1);
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}
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private static void StoredProcedure()
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{
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var db = GetInstance();
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//1. no result
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db.Ado.UseStoredProcedure(() =>
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{
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string spName = "sp_help";
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var getSpReslut = db.Ado.SqlQueryDynamic(spName, new { objname = "student" });
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});
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//2. has result
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var result = db.Ado.UseStoredProcedure<dynamic>(() =>
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{
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string spName = "sp_help";
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return db.Ado.SqlQueryDynamic(spName, new { objname = "student" });
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});
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//2. has output
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object outPutValue;
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var outputResult = db.Ado.UseStoredProcedure<dynamic>(() =>
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{
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string spName = "sp_school";
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var p1 = new SugarParameter("@p1", "1");
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var p2 = new SugarParameter("@p2", null, true);//isOutput=true
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var dbResult = db.Ado.SqlQueryDynamic(spName, new SugarParameter[] { p1, p2 });
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outPutValue = p2.Value;
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return dbResult;
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});
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//3
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var dt = db.Ado.UseStoredProcedure().GetDataTable("sp_school", new { p1 = 1, p2 = 2 });
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var p11 = new SugarParameter("@p1", "1");
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var p22 = new SugarParameter("@p2", null, true);//isOutput=true
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//4
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var dt2 = db.Ado.UseStoredProcedure().SqlQuery<School>("sp_school", p11, p22);
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}
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private static void Tran()
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{
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var db = GetInstance();
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var x = db.Insertable(new Student() { CreateTime = DateTime.Now, Name = "tran" }).ExecuteCommand();
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//1. no result
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var result = db.Ado.UseTran(() =>
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{
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var beginCount = db.Queryable<Student>().ToList();
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db.Ado.ExecuteCommand("delete student");
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var endCount = db.Queryable<Student>().Count();
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throw new Exception("error haha");
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});
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var count = db.Queryable<Student>().Count();
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//2 has result
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var result2 = db.Ado.UseTran<List<Student>>(() =>
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{
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return db.Queryable<Student>().ToList();
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});
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//3 use try
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try
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{
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db.Ado.BeginTran();
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db.Ado.CommitTran();
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}
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catch (Exception)
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{
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db.Ado.RollbackTran();
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throw;
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}
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//async tran
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var asyncResult = db.Ado.UseTranAsync(() =>
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{
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var beginCount = db.Queryable<Student>().ToList();
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db.Ado.ExecuteCommand("delete student");
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var endCount = db.Queryable<Student>().Count();
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throw new Exception("error haha");
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});
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asyncResult.Wait();
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var asyncCount = db.Queryable<Student>().Count();
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//async
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var asyncResult2 = db.Ado.UseTranAsync<List<Student>>(() =>
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{
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return db.Queryable<Student>().ToList();
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});
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asyncResult2.Wait();
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}
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private static void Group()
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{
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var db = GetInstance();
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var list = db.Queryable<Student>()
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.GroupBy(it => it.Name)
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.GroupBy(it => it.Id).Having(it => SqlFunc.AggregateAvg(it.Id) > 0)
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.Select(it => new { idAvg = SqlFunc.AggregateAvg(it.Id), name = it.Name }).ToList();
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var list2 = db.Queryable<Student>()
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.GroupBy(it => new { it.Id, it.Name }).Having(it => SqlFunc.AggregateAvg(it.Id) > 0)
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.Select(it => new { idAvg = SqlFunc.AggregateAvg(it.Id), name = it.Name }).ToList();
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//SQL:
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//SELECT AVG([Id]) AS[idAvg], [Name] AS[name] FROM[Student] GROUP BY[Name],[Id] HAVING(AVG([Id]) > 0 )
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// group id,name take first
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var list3 = db.Queryable<Student>()
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.PartitionBy(it => new { it.Id, it.Name }).Take(1).ToList();
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var list31 = db.Queryable<Student>()
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.PartitionBy(it => new { it.Id, it.Name }).Take(1).Count();
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int count = 0;
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var list4 = db.Queryable<Student, School>((st, sc) => st.SchoolId == sc.Id)
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.PartitionBy(st => new { st.Name }).Take(2).OrderBy(st => st.Id, OrderByType.Desc).Select(st => st).ToPageList(1, 1000, ref count);
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//SqlFunc.AggregateSum(object thisValue)
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//SqlFunc.AggregateAvg<TResult>(TResult thisValue)
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//SqlFunc.AggregateMin(object thisValue)
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//SqlFunc.AggregateMax(object thisValue)
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//SqlFunc.AggregateCount(object thisValue)
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}
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private static void Ado()
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{
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var db = GetInstance();
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db.Ado.BeginTran();
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var t1 = db.Ado.SqlQuery<string>("select 'a'");
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var t2 = db.Ado.GetInt("select 1");
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var t3 = db.Ado.GetDataTable("select 1 as id");
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db.Ado.CommitTran();
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var t11 = db.Ado.SqlQuery<Student>("select * from student");
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//more
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//db.Ado.GetXXX...
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}
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public static void Easy()
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{
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var db = GetInstance();
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var dbTime = db.GetDate();
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var getAll = db.Queryable<Student>().Select<object>("*").ToList();
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var getAll2 = db.Queryable<Student>().ToList();
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var getRandomList = db.Queryable<Student>().OrderBy(it => SqlFunc.GetRandom()).ToList();
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var getAllOrder = db.Queryable<Student>().OrderBy(it => it.Id).OrderBy(it => it.Name, OrderByType.Desc).ToList();
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var getId = db.Queryable<Student>().Select(it => it.Id).ToList();
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var getNew = db.Queryable<Student>().Where(it => it.Id == 1).Select(it => new { id = SqlFunc.IIF(it.Id == 0, 1, it.Id), it.Name, it.SchoolId }).ToList();
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var getAllNoLock = db.Queryable<Student>().With(SqlWith.NoLock).ToList();
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var getByPrimaryKey = db.Queryable<Student>().InSingle(2);
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var getSingleOrDefault = db.Queryable<Student>().Where(it => it.Id == 1).Single();
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var getFirstOrDefault = db.Queryable<Student>().First();
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var getByWhere = db.Queryable<Student>().Where(it => it.Id == 1 || it.Name == "a").ToList();
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var getByWhere2 = db.Queryable<Student>().Where(it => it.Id ==DateTime.Now.Year).ToList();
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var getByFuns = db.Queryable<Student>().Where(it => SqlFunc.IsNullOrEmpty(it.Name)).ToList();
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var sum = db.Queryable<Student>().Select(it => it.SchoolId).ToList();
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var sum2 = db.Queryable<Student, School>((st, sc) => st.SchoolId == sc.Id).Sum((st, sc) => sc.Id);
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var isAny = db.Queryable<Student>().Where(it => it.Id == -1).Any();
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var isAny2 = db.Queryable<Student>().Any(it => it.Id == -1);
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var count = db.Queryable<Student>().Count(it => it.Id > 0);
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var date = db.Queryable<Student>().Where(it => it.CreateTime.Value.Date == DateTime.Now.Date).ToList();
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var getListByRename = db.Queryable<School>().AS("Student").ToList();
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var in1 = db.Queryable<Student>().In(it => it.Id, new int[] { 1, 2, 3 }).ToList();
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var in2 = db.Queryable<Student>().In(new int[] { 1, 2, 3 }).ToList();
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int[] array = new int[] { 1, 2 };
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var in3 = db.Queryable<Student>().Where(it => SqlFunc.ContainsArray(array, it.Id)).ToList();
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var group = db.Queryable<Student>().GroupBy(it => it.Id)
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.Having(it => SqlFunc.AggregateCount(it.Id) > 10)
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.Select(it => new { id = SqlFunc.AggregateCount(it.Id) }).ToList();
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var between = db.Queryable<Student>().Where(it => SqlFunc.Between(it.Id, 1, 20)).ToList();
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var getTodayList = db.Queryable<Student>().Where(it => SqlFunc.DateIsSame(it.CreateTime, DateTime.Now)).ToList();
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var joinSql = db.Queryable("student", "s").OrderBy("id").Select("id,name").ToPageList(1, 2);
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var getDay1List = db.Queryable<Student>().Where(it => it.CreateTime.Value.Hour == 1).ToList();
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var getDateAdd = db.Queryable<Student>().Where(it => it.CreateTime.Value.AddDays(1) == DateTime.Now).ToList();
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var getDateIsSame = db.Queryable<Student>().Where(it => SqlFunc.DateIsSame(DateTime.Now, DateTime.Now, DateType.Hour)).ToList();
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var getSqlList = db.Queryable<Student>().AS("(select * from student) t").ToList();
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var getUnionAllList = db.UnionAll(db.Queryable<Student>().Where(it => it.Id == 1), db.Queryable<Student>().Where(it => it.Id == 2)).ToList();
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var getUnionAllList2 = db.UnionAll(db.Queryable<Student>(), db.Queryable<Student>()).ToList();
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var getUnionAllList3= db.UnionAll(db.Queryable<Student>()
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.Select(it => new Student { Id =SqlFunc.ToInt32(1) ,Name=SqlFunc.ToString("2"), SchoolId = Convert.ToInt32(3) })
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, db.Queryable<Student>()
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.Select(it => new Student { Id = SqlFunc.ToInt32(11) , Name = SqlFunc.ToString("22") , SchoolId=Convert.ToInt32(33)}))
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.Select(it=>new Student() { Id=SqlFunc.ToInt32(111), Name = SqlFunc.ToString("222") }).ToList();
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var test1 = db.Queryable<Student, School>((st, sc) => st.SchoolId == sc.Id).Where(st=>st.CreateTime>SqlFunc.GetDate()).Select((st, sc) => SqlFunc.ToInt64(sc.Id)).ToList();
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var test2 = db.Queryable<Student, School>((st, sc) => st.SchoolId == sc.Id)
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.Where(st =>
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SqlFunc.IF(st.Id > 1)
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.Return(st.Id)
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.ElseIF(st.Id == 1)
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.Return(st.SchoolId).End(st.Id) == 1).Select(st=>st).ToList();
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var test3 = db.Queryable<DataTestInfo2>().Select(it => it.Bool1).ToSql();
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var test4 = db.Queryable<DataTestInfo2>().Select(it => new { b=it.Bool1 }).ToSql();
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DateTime? result = DateTime.Now;
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var test5 = db.Queryable<Student>().Where(it=>it.CreateTime> result.Value.Date).ToList();
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}
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public static void Page()
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{
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var db = GetInstance();
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var pageIndex = 1;
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var pageSize = 2;
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var totalCount = 0;
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//page
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var page = db.Queryable<Student>().OrderBy(it => it.Id).ToPageList(pageIndex, pageSize, ref totalCount);
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//page join
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var pageJoin = db.Queryable<Student, School>((st, sc) => new object[] {
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JoinType.Left,st.SchoolId==sc.Id
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}).ToPageList(pageIndex, pageSize, ref totalCount);
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//top 5
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var top5 = db.Queryable<Student>().Take(5).ToList();
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//skip5
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var skip5 = db.Queryable<Student>().Skip(5).ToList();
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}
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public static void Where()
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{
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var db = GetInstance();
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//join
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var list = db.Queryable<Student, School>((st, sc) => new object[] {
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JoinType.Left,st.SchoolId==sc.Id
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})
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.Where((st, sc) => sc.Id == 1)
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.Where((st, sc) => st.Id == 1)
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.Where((st, sc) => st.Id == 1 && sc.Id == 2).ToList();
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//SELECT [st].[Id],[st].[SchoolId],[st].[Name],[st].[CreateTime] FROM [Student] st
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//Left JOIN School sc ON ( [st].[SchoolId] = [sc].[Id] )
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//WHERE ( [sc].[Id] = @Id0 ) AND ( [st].[Id] = @Id1 ) AND (( [st].[Id] = @Id2 ) AND ( [sc].[Id] = @Id3 ))
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//Where If
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string name = null;
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string name2 = "sunkaixuan";
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var list2 = db.Queryable<Student>()
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.WhereIF(!string.IsNullOrEmpty(name), it => it.Name == name)
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.WhereIF(!string.IsNullOrEmpty(name2), it => it.Name == name2).ToList();
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//join
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var list3 = db.Queryable<Student, School>((st, sc) => new object[] {
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JoinType.Left,st.SchoolId==sc.Id
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})
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.WhereIF(false, (st, sc) => sc.Id == 1)
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.WhereIF(false, (st, sc) => st.Id == 1).ToList();
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var list4 = db.Queryable<Student, School>((st, sc) => new object[] {
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JoinType.Left,st.SchoolId==sc.Id
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})
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.Select((st, sc) => new { id = st.Id, school = sc }).ToList();
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var list5 = db.Queryable<Student, School>((st, sc) => new object[] {
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JoinType.Left,st.SchoolId==sc.Id
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}).AS<Student>("STUDENT").AS<School>("SCHOOL")
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.Select((st, sc) => new { id = st.Id, school = sc }).ToList();
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var list6 = db.Queryable<Student, School>((st, sc) => new object[] {
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JoinType.Left,st.SchoolId==sc.Id
|
|
}).With(SqlWith.NoLock).AS<Student>("STUDENT").AS<School>("SCHOOL")
|
|
.Select((st, sc) => new { id = st.Id, school = sc }).ToList();
|
|
}
|
|
public static void Join()
|
|
{
|
|
var db = GetInstance();
|
|
//join 2
|
|
var list = db.Queryable<Student, School>((st, sc) => new object[] {
|
|
JoinType.Left,st.SchoolId==sc.Id
|
|
})
|
|
.Where(st => st.Name == "jack").ToList();
|
|
|
|
//join 3
|
|
var list2 = db.Queryable<Student, School, Student>((st, sc, st2) => new object[] {
|
|
JoinType.Left,st.SchoolId==sc.Id,
|
|
JoinType.Left,st.SchoolId==st2.Id
|
|
})
|
|
.Where((st, sc, st2) => st2.Id == 1 || sc.Id == 1 || st.Id == 1).With(SqlWith.NoLock).ToList();
|
|
|
|
//join return List<ViewModelStudent>
|
|
var list3 = db.Queryable<Student, School>((st, sc) => new object[] {
|
|
JoinType.Left,st.SchoolId==sc.Id
|
|
}).Select((st, sc) => new ViewModelStudent { Name = st.Name, SchoolId = sc.Id }).ToList();
|
|
|
|
//join Order By (order by st.id desc,sc.id desc)
|
|
var list4 = db.Queryable<Student, School>((st, sc) => new object[] {
|
|
JoinType.Left,st.SchoolId==sc.Id
|
|
})
|
|
.OrderBy(st => st.Id, OrderByType.Desc)
|
|
.OrderBy((st, sc) => sc.Id, OrderByType.Desc)
|
|
.Select((st, sc) => new ViewModelStudent { Name = st.Name, SchoolId = sc.Id }).ToList();
|
|
|
|
|
|
//join 2
|
|
var list4_1 = db.Queryable<Student, School>((st, sc) => new object[] {
|
|
JoinType.Left,st.SchoolId==sc.Id&& st.Name == "jack"
|
|
}).ToList();
|
|
|
|
|
|
//The simple use of Join 2 table
|
|
var list5 = db.Queryable<Student, School>((st, sc) => st.SchoolId == sc.Id).Select((st, sc) => new { st.Name, st.Id, schoolName = sc.Name }).ToList();
|
|
|
|
//join 3 table
|
|
var list6 = db.Queryable<Student, School, School>((st, sc, sc2) => st.SchoolId == sc.Id && sc.Id == sc2.Id)
|
|
.Select((st, sc, sc2) => new { st.Name, st.Id, schoolName = sc.Name, schoolName2 = sc2.Name }).ToList();
|
|
|
|
//join 3 table page
|
|
var list7 = db.Queryable<Student, School, School>((st, sc, sc2) => st.SchoolId == sc.Id && sc.Id == sc2.Id)
|
|
.Select((st, sc, sc2) => new { st.Name, st.Id, schoolName = sc.Name, schoolName2 = sc2.Name }).ToPageList(1, 2);
|
|
|
|
//join 3 table page
|
|
var list8 = db.Queryable<Student, School, School>((st, sc, sc2) => st.SchoolId == sc.Id && sc.Id == sc2.Id)
|
|
.OrderBy(st => st.Id)
|
|
.Select((st, sc, sc2) => new { st.Name, st.Id, schoolName = sc.Name, schoolName2 = sc2.Name }).ToPageList(1, 2);
|
|
|
|
//In
|
|
var list9 = db.Queryable<Student>("it")
|
|
.OrderBy(it => it.Id)
|
|
.In(it => it.Id, db.Queryable<School>().Where("it.id=schoolId").Select(it => it.Id))
|
|
.ToList();
|
|
//SELECT [ID],[SchoolId],[Name],[CreateTime] FROM [STudent] it WHERE [ID]
|
|
//IN (SELECT [Id] FROM [School] WHERE it.id=schoolId ) ORDER BY [ID] ASC
|
|
|
|
var list10 = db.Queryable<Student, School>((st, sc) => st.SchoolId == sc.Id)
|
|
.In(st => st.Name, db.Queryable<School>("sc2").Where("id=st.schoolid").Select(it => it.Name))
|
|
.OrderBy(st => st.Id)
|
|
.Select(st => st)
|
|
.ToList();
|
|
//SELECT st.* FROM [STudent] st ,[School] sc WHERE ( [st].[SchoolId] = [sc].[Id] ) AND [st].[Name]
|
|
//IN (SELECT [Name] FROM [School] sc2 WHERE id=st.schoolid ) ORDER BY [st].[ID] ASC
|
|
|
|
var list11 = db.Queryable<Student, School>((st, sc) => st.SchoolId == sc.Id)
|
|
.In(st => st.Name, db.Queryable<School>("sc2").Where(it => it.Id == 1).Where("id=st.schoolid").Select(it => it.Name))
|
|
.OrderBy(st => st.Id)
|
|
.Select(st => st)
|
|
.ToList();
|
|
|
|
var subquery = db.Queryable<Student>().Where(it => it.Id == 1);
|
|
var subquery2 = db.Queryable<Student>();
|
|
db.Queryable(subquery, subquery2, (st1, st2) => st1.Id == st2.Id).Select((st1,st2)=>new {
|
|
id=st1.Id,
|
|
name=st2.Name
|
|
}).ToList();
|
|
}
|
|
public static void Funs()
|
|
{
|
|
var db = GetInstance();
|
|
var t1 = db.Queryable<Student>().Where(it => SqlFunc.ToLower(it.Name) == SqlFunc.ToLower("JACK")).ToList();
|
|
var t2 = db.Queryable<Student>().Where(it => SqlFunc.IsNull(it.Name,"nullvalue")=="nullvalue").ToList();
|
|
var t3 = db.Queryable<Student>().Where(it => SqlFunc.MergeString("a",it.Name) == "nullvalue").ToList();
|
|
//SELECT [Id],[SchoolId],[Name],[CreateTime] FROM [Student] WHERE ((LOWER([Name])) = (LOWER(@MethodConst0)) )
|
|
|
|
/***More Functions***/
|
|
//SqlFunc.IsNullOrEmpty(object thisValue)
|
|
//SqlFunc.ToLower(object thisValue)
|
|
//SqlFunc.string ToUpper(object thisValue)
|
|
//SqlFunc.string Trim(object thisValue)
|
|
//SqlFunc.bool Contains(string thisValue, string parameterValue)
|
|
//SqlFunc.ContainsArray(object[] thisValue, string parameterValue)
|
|
//SqlFunc.StartsWith(object thisValue, string parameterValue)
|
|
//SqlFunc.EndsWith(object thisValue, string parameterValue)
|
|
//SqlFunc.Equals(object thisValue, object parameterValue)
|
|
//SqlFunc.DateIsSame(DateTime date1, DateTime date2)
|
|
//SqlFunc.DateIsSame(DateTime date1, DateTime date2, DateType dataType)
|
|
//SqlFunc.DateAdd(DateTime date, int addValue, DateType millisecond)
|
|
//SqlFunc.DateAdd(DateTime date, int addValue)
|
|
//SqlFunc.DateValue(DateTime date, DateType dataType)
|
|
//SqlFunc.Between(object value, object start, object end)
|
|
//SqlFunc.ToInt32(object value)
|
|
//SqlFunc.ToInt64(object value)
|
|
//SqlFunc.ToDate(object value)
|
|
//SqlFunc.ToString(object value)
|
|
//SqlFunc.ToDecimal(object value)
|
|
//SqlFunc.ToGuid(object value)
|
|
//SqlFunc.ToDouble(object value)
|
|
//SqlFunc.ToBool(object value)
|
|
//SqlFunc.Substring(object value, int index, int length)
|
|
//SqlFunc.Replace(object value, string oldChar, string newChar)
|
|
//SqlFunc.Length(object value) { throw new NotImplementedException(); }
|
|
//SqlFunc.AggregateSum(object thisValue)
|
|
//SqlFunc.AggregateAvg<TResult>(TResult thisValue)
|
|
//SqlFunc.AggregateMin(object thisValue)
|
|
//SqlFunc.AggregateMax(object thisValue)
|
|
//SqlFunc.AggregateCount(object thisValue)
|
|
}
|
|
public static void Select()
|
|
{
|
|
var db = GetInstance();
|
|
db.IgnoreColumns.Add("TestId", "Student");
|
|
var s1 = db.Queryable<Student>().Where(it => it.Id == 136915).Single();
|
|
var s2 = db.Queryable<Student>().Select(it => new { id = it.Id, w = new { x = it } }).ToList();
|
|
var s3 = db.Queryable<Student>().Select(it => new { newid = it.Id }).ToList();
|
|
var s4 = db.Queryable<Student>().Select(it => new { newid = it.Id, obj = it }).ToList();
|
|
var s41 = db.Queryable<Student>().Select<dynamic>("*").ToList();
|
|
var s5 = db.Queryable<Student>().Select(it => new ViewModelStudent2 { Student = it, Name = it.Name }).ToList();
|
|
var s6 = db.Queryable<Student, School>((st, sc) => new object[] {
|
|
JoinType.Left,st.SchoolId==sc.Id
|
|
})
|
|
.OrderBy(st => st.Id, OrderByType.Desc)
|
|
.OrderBy((st, sc) => sc.Id, OrderByType.Desc)
|
|
.Select((st, sc) => new { Name = st.Name, SchoolId = sc.Id }).ToList();
|
|
|
|
|
|
var s7 = db.Queryable<Student, School>((st, sc) => new object[] {
|
|
JoinType.Left,st.SchoolId==sc.Id
|
|
}).Select((st, sc) => sc).ToList();
|
|
|
|
var s8 = db.Queryable<Student, School>((st, sc) => new object[] {
|
|
JoinType.Left,st.SchoolId==sc.Id
|
|
})
|
|
.OrderBy((st, sc) => st.SchoolId)
|
|
.Select((st, sc) => sc)
|
|
.Take(1).ToList();
|
|
|
|
var s9 = db.Queryable<Student>().Select(it=>new Student() { Id=it.Id, TestId=1, Name=it.Name, CreateTime=it.CreateTime }).First();
|
|
var s10 = db.Queryable<Student>().Select(it => new Student() { Id = it.Id}).First();
|
|
|
|
//auto fill
|
|
var s11 = db.Queryable<Student, School>((st,sc)=>st.SchoolId==sc.Id).Select<ViewModelStudent3>().ToList();
|
|
}
|
|
private static void Sqlable()
|
|
{
|
|
var db = GetInstance();
|
|
var join3 = db.Queryable("Student", "st")
|
|
.AddJoinInfo("School", "sh", "sh.id=st.schoolid")
|
|
.Where("st.id>@id")
|
|
.AddParameters(new { id = 1 })
|
|
.Select("st.*").ToList();
|
|
//SELECT st.* FROM [Student] st Left JOIN School sh ON sh.id=st.schoolid WHERE st.id>@id
|
|
}
|
|
private static void Enum()
|
|
{
|
|
var db = GetInstance();
|
|
var list = db.Queryable<StudentEnum>().AS("Student").Where(it => it.SchoolId == SchoolEnum.HarvardUniversity).ToList();
|
|
}
|
|
}
|
|
}
|
|
|