From d58dcd746a42178477f39213b2ec6d85de07a516 Mon Sep 17 00:00:00 2001
From: sunkaixuan <610262374@qq.com>
Date: Sat, 18 Nov 2023 03:01:47 +0800
Subject: [PATCH] Add demo

---
 Src/Asp.Net/MySqlTest/4_Subquery.cs           | 68 +++++++++++++++++++
 Src/Asp.Net/MySqlTest/MySqlTest.csproj        |  1 +
 Src/Asp.Net/MySqlTest/Program.cs              |  1 +
 Src/Asp.Net/PgSqlTest/4_Subquery.cs           | 68 +++++++++++++++++++
 Src/Asp.Net/PgSqlTest/PgSqlTest.csproj        |  1 +
 Src/Asp.Net/PgSqlTest/Program.cs              |  1 +
 Src/Asp.Net/SqlServerTest/4_Subquery.cs       | 68 +++++++++++++++++++
 Src/Asp.Net/SqlServerTest/Program.cs          |  1 +
 .../SqlServerTest/SqlServerTest.csproj        |  1 +
 Src/Asp.Net/SqliteTest/4_Subquery.cs          | 68 +++++++++++++++++++
 Src/Asp.Net/SqliteTest/Program.cs             |  1 +
 Src/Asp.Net/SqliteTest/SqliteTest.csproj      |  1 +
 12 files changed, 280 insertions(+)
 create mode 100644 Src/Asp.Net/MySqlTest/4_Subquery.cs
 create mode 100644 Src/Asp.Net/PgSqlTest/4_Subquery.cs
 create mode 100644 Src/Asp.Net/SqlServerTest/4_Subquery.cs
 create mode 100644 Src/Asp.Net/SqliteTest/4_Subquery.cs

diff --git a/Src/Asp.Net/MySqlTest/4_Subquery.cs b/Src/Asp.Net/MySqlTest/4_Subquery.cs
new file mode 100644
index 000000000..56c6e9956
--- /dev/null
+++ b/Src/Asp.Net/MySqlTest/4_Subquery.cs
@@ -0,0 +1,68 @@
+using SqlSugar;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OrmTest
+{ 
+    public class _4_Subquery
+    {
+        public static void Init()
+        {
+
+            var db = DbHelper.GetNewDb();
+
+            db.CodeFirst.InitTables<Student, School>();
+            db.DbMaintenance.TruncateTable<Student, School>();
+
+            db.Insertable(new Student() { Id = 1, SchoolId = 1 }).ExecuteCommand();
+            db.Insertable(new School() { Id = 1, Name = "Harvard School" }).ExecuteCommand();
+            db.Insertable(new Student() { Id = 2, SchoolId = 2 }).ExecuteCommand();
+            db.Insertable(new School() { Id = 2, Name = "haha School" }).ExecuteCommand();
+
+            //subquery select
+            var result = db.Queryable<Student>()
+               .Select(st => new
+               {
+                   SchoolName = SqlFunc.Subqueryable<School>().Where(s => s.Id == st.SchoolId).Select(s => s.Name),
+                   MaxSchoolId = SqlFunc.Subqueryable<School>().Where(s => s.Id == st.SchoolId).Select(s => SqlFunc.AggregateMax(s.Id)),
+                   MaxSchoolId2 = SqlFunc.Subqueryable<School>().Where(s => s.Id == st.SchoolId).Max(s => s.Id),
+               })
+               .ToList();
+
+            //Exists:
+            //SELECT [Id],[SchoolId] FROM [Student0402] [it]  WHERE (EXISTS ( SELECT * FROM [School0402] [s]  WHERE ( [Id] = [it].[SchoolId] ) ))
+            var result2 = db.Queryable<Student>()
+              .Where(it => SqlFunc.Subqueryable<School>().Where(s => s.Id == it.SchoolId).Any())
+              .ToList();
+
+            //In:
+            //SELECT [Id],[SchoolId] FROM [Student0402] [it]  WHERE  [Id]  in (SELECT [Id] FROM [School0402] [s]  GROUP BY [Id])
+            var result3 = db.Queryable<Student>()
+            .Where(it => it.Id == SqlFunc.Subqueryable<School>().GroupBy(s => s.Id).Select(s => s.Id))
+            .ToList();
+
+            //Equal:
+            //SELECT [Id],[SchoolId] FROM [Student0402] [it]  WHERE ( [Id] =(SELECT TOP 1 [s].[Id] FROM [School0402] [s] ))
+            var result4 = db.Queryable<Student>()
+            .Where(it => it.Id == SqlFunc.Subqueryable<School>().Select(s => s.Id))
+            .ToList();
+        }
+
+        [SugarTable("Student0402")]
+        public class Student
+        {
+            public int Id { get; set; }
+            public int SchoolId { get; set; }
+        }
+        [SugarTable("School0402")]
+        public class School
+        {
+            public int Id { get; set; }
+            public string Name { get; set; }
+        }
+
+    }
+}
diff --git a/Src/Asp.Net/MySqlTest/MySqlTest.csproj b/Src/Asp.Net/MySqlTest/MySqlTest.csproj
index 12522d8db..699a05bd8 100644
--- a/Src/Asp.Net/MySqlTest/MySqlTest.csproj
+++ b/Src/Asp.Net/MySqlTest/MySqlTest.csproj
@@ -83,6 +83,7 @@
     <Compile Include="2_DbFirst.cs" />
     <Compile Include="3_EasyQuery.cs" />
     <Compile Include="4_JoinQuery.cs" />
+    <Compile Include="4_Subquery.cs" />
     <Compile Include="5_PageQuery.cs" />
     <Compile Include="6_NavigationPropertyQuery.cs" />
     <Compile Include="7_GroupQuery.cs" />
diff --git a/Src/Asp.Net/MySqlTest/Program.cs b/Src/Asp.Net/MySqlTest/Program.cs
index 4cd80127e..8bfacd252 100644
--- a/Src/Asp.Net/MySqlTest/Program.cs
+++ b/Src/Asp.Net/MySqlTest/Program.cs
@@ -15,6 +15,7 @@ namespace OrmTest
             _2_DbFirst.Init();
             _3_EasyQuery.Init();
             _4_JoinQuery.Init();
+            _4_Subquery.Init();
             _5_PageQuery.Init();
             _6_NavQuery.Init();
             _7_GroupQuery.Init();
diff --git a/Src/Asp.Net/PgSqlTest/4_Subquery.cs b/Src/Asp.Net/PgSqlTest/4_Subquery.cs
new file mode 100644
index 000000000..56c6e9956
--- /dev/null
+++ b/Src/Asp.Net/PgSqlTest/4_Subquery.cs
@@ -0,0 +1,68 @@
+using SqlSugar;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OrmTest
+{ 
+    public class _4_Subquery
+    {
+        public static void Init()
+        {
+
+            var db = DbHelper.GetNewDb();
+
+            db.CodeFirst.InitTables<Student, School>();
+            db.DbMaintenance.TruncateTable<Student, School>();
+
+            db.Insertable(new Student() { Id = 1, SchoolId = 1 }).ExecuteCommand();
+            db.Insertable(new School() { Id = 1, Name = "Harvard School" }).ExecuteCommand();
+            db.Insertable(new Student() { Id = 2, SchoolId = 2 }).ExecuteCommand();
+            db.Insertable(new School() { Id = 2, Name = "haha School" }).ExecuteCommand();
+
+            //subquery select
+            var result = db.Queryable<Student>()
+               .Select(st => new
+               {
+                   SchoolName = SqlFunc.Subqueryable<School>().Where(s => s.Id == st.SchoolId).Select(s => s.Name),
+                   MaxSchoolId = SqlFunc.Subqueryable<School>().Where(s => s.Id == st.SchoolId).Select(s => SqlFunc.AggregateMax(s.Id)),
+                   MaxSchoolId2 = SqlFunc.Subqueryable<School>().Where(s => s.Id == st.SchoolId).Max(s => s.Id),
+               })
+               .ToList();
+
+            //Exists:
+            //SELECT [Id],[SchoolId] FROM [Student0402] [it]  WHERE (EXISTS ( SELECT * FROM [School0402] [s]  WHERE ( [Id] = [it].[SchoolId] ) ))
+            var result2 = db.Queryable<Student>()
+              .Where(it => SqlFunc.Subqueryable<School>().Where(s => s.Id == it.SchoolId).Any())
+              .ToList();
+
+            //In:
+            //SELECT [Id],[SchoolId] FROM [Student0402] [it]  WHERE  [Id]  in (SELECT [Id] FROM [School0402] [s]  GROUP BY [Id])
+            var result3 = db.Queryable<Student>()
+            .Where(it => it.Id == SqlFunc.Subqueryable<School>().GroupBy(s => s.Id).Select(s => s.Id))
+            .ToList();
+
+            //Equal:
+            //SELECT [Id],[SchoolId] FROM [Student0402] [it]  WHERE ( [Id] =(SELECT TOP 1 [s].[Id] FROM [School0402] [s] ))
+            var result4 = db.Queryable<Student>()
+            .Where(it => it.Id == SqlFunc.Subqueryable<School>().Select(s => s.Id))
+            .ToList();
+        }
+
+        [SugarTable("Student0402")]
+        public class Student
+        {
+            public int Id { get; set; }
+            public int SchoolId { get; set; }
+        }
+        [SugarTable("School0402")]
+        public class School
+        {
+            public int Id { get; set; }
+            public string Name { get; set; }
+        }
+
+    }
+}
diff --git a/Src/Asp.Net/PgSqlTest/PgSqlTest.csproj b/Src/Asp.Net/PgSqlTest/PgSqlTest.csproj
index de0359861..c09ec5872 100644
--- a/Src/Asp.Net/PgSqlTest/PgSqlTest.csproj
+++ b/Src/Asp.Net/PgSqlTest/PgSqlTest.csproj
@@ -69,6 +69,7 @@
     <Compile Include="2_DbFirst.cs" />
     <Compile Include="3_EasyQuery.cs" />
     <Compile Include="4_JoinQuery.cs" />
+    <Compile Include="4_Subquery.cs" />
     <Compile Include="5_PageQuery.cs" />
     <Compile Include="6_NavigationPropertyQuery.cs" />
     <Compile Include="7_GroupQuery.cs" />
diff --git a/Src/Asp.Net/PgSqlTest/Program.cs b/Src/Asp.Net/PgSqlTest/Program.cs
index 49a240df3..bb4b99e75 100644
--- a/Src/Asp.Net/PgSqlTest/Program.cs
+++ b/Src/Asp.Net/PgSqlTest/Program.cs
@@ -15,6 +15,7 @@ namespace OrmTest
             _2_DbFirst.Init();
             _3_EasyQuery.Init();
             _4_JoinQuery.Init();
+            _4_Subquery.Init();
             _5_PageQuery.Init();
             _6_NavQuery.Init();
             _7_GroupQuery.Init();
diff --git a/Src/Asp.Net/SqlServerTest/4_Subquery.cs b/Src/Asp.Net/SqlServerTest/4_Subquery.cs
new file mode 100644
index 000000000..56c6e9956
--- /dev/null
+++ b/Src/Asp.Net/SqlServerTest/4_Subquery.cs
@@ -0,0 +1,68 @@
+using SqlSugar;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OrmTest
+{ 
+    public class _4_Subquery
+    {
+        public static void Init()
+        {
+
+            var db = DbHelper.GetNewDb();
+
+            db.CodeFirst.InitTables<Student, School>();
+            db.DbMaintenance.TruncateTable<Student, School>();
+
+            db.Insertable(new Student() { Id = 1, SchoolId = 1 }).ExecuteCommand();
+            db.Insertable(new School() { Id = 1, Name = "Harvard School" }).ExecuteCommand();
+            db.Insertable(new Student() { Id = 2, SchoolId = 2 }).ExecuteCommand();
+            db.Insertable(new School() { Id = 2, Name = "haha School" }).ExecuteCommand();
+
+            //subquery select
+            var result = db.Queryable<Student>()
+               .Select(st => new
+               {
+                   SchoolName = SqlFunc.Subqueryable<School>().Where(s => s.Id == st.SchoolId).Select(s => s.Name),
+                   MaxSchoolId = SqlFunc.Subqueryable<School>().Where(s => s.Id == st.SchoolId).Select(s => SqlFunc.AggregateMax(s.Id)),
+                   MaxSchoolId2 = SqlFunc.Subqueryable<School>().Where(s => s.Id == st.SchoolId).Max(s => s.Id),
+               })
+               .ToList();
+
+            //Exists:
+            //SELECT [Id],[SchoolId] FROM [Student0402] [it]  WHERE (EXISTS ( SELECT * FROM [School0402] [s]  WHERE ( [Id] = [it].[SchoolId] ) ))
+            var result2 = db.Queryable<Student>()
+              .Where(it => SqlFunc.Subqueryable<School>().Where(s => s.Id == it.SchoolId).Any())
+              .ToList();
+
+            //In:
+            //SELECT [Id],[SchoolId] FROM [Student0402] [it]  WHERE  [Id]  in (SELECT [Id] FROM [School0402] [s]  GROUP BY [Id])
+            var result3 = db.Queryable<Student>()
+            .Where(it => it.Id == SqlFunc.Subqueryable<School>().GroupBy(s => s.Id).Select(s => s.Id))
+            .ToList();
+
+            //Equal:
+            //SELECT [Id],[SchoolId] FROM [Student0402] [it]  WHERE ( [Id] =(SELECT TOP 1 [s].[Id] FROM [School0402] [s] ))
+            var result4 = db.Queryable<Student>()
+            .Where(it => it.Id == SqlFunc.Subqueryable<School>().Select(s => s.Id))
+            .ToList();
+        }
+
+        [SugarTable("Student0402")]
+        public class Student
+        {
+            public int Id { get; set; }
+            public int SchoolId { get; set; }
+        }
+        [SugarTable("School0402")]
+        public class School
+        {
+            public int Id { get; set; }
+            public string Name { get; set; }
+        }
+
+    }
+}
diff --git a/Src/Asp.Net/SqlServerTest/Program.cs b/Src/Asp.Net/SqlServerTest/Program.cs
index 8e0adebd4..b0ff620f6 100644
--- a/Src/Asp.Net/SqlServerTest/Program.cs
+++ b/Src/Asp.Net/SqlServerTest/Program.cs
@@ -14,6 +14,7 @@ namespace OrmTest
             _2_DbFirst.Init();
             _3_EasyQuery.Init();
             _4_JoinQuery.Init();
+            _4_Subquery.Init();
             _5_PageQuery.Init();
             _6_NavQuery.Init();
             _7_GroupQuery.Init();
diff --git a/Src/Asp.Net/SqlServerTest/SqlServerTest.csproj b/Src/Asp.Net/SqlServerTest/SqlServerTest.csproj
index b427a4c24..c082832fa 100644
--- a/Src/Asp.Net/SqlServerTest/SqlServerTest.csproj
+++ b/Src/Asp.Net/SqlServerTest/SqlServerTest.csproj
@@ -64,6 +64,7 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="4_Subquery.cs" />
     <Compile Include="a1_Delete.cs" />
     <Compile Include="1_CodeFirst.cs" />
     <Compile Include="2_DbFirst.cs" />
diff --git a/Src/Asp.Net/SqliteTest/4_Subquery.cs b/Src/Asp.Net/SqliteTest/4_Subquery.cs
new file mode 100644
index 000000000..56c6e9956
--- /dev/null
+++ b/Src/Asp.Net/SqliteTest/4_Subquery.cs
@@ -0,0 +1,68 @@
+using SqlSugar;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OrmTest
+{ 
+    public class _4_Subquery
+    {
+        public static void Init()
+        {
+
+            var db = DbHelper.GetNewDb();
+
+            db.CodeFirst.InitTables<Student, School>();
+            db.DbMaintenance.TruncateTable<Student, School>();
+
+            db.Insertable(new Student() { Id = 1, SchoolId = 1 }).ExecuteCommand();
+            db.Insertable(new School() { Id = 1, Name = "Harvard School" }).ExecuteCommand();
+            db.Insertable(new Student() { Id = 2, SchoolId = 2 }).ExecuteCommand();
+            db.Insertable(new School() { Id = 2, Name = "haha School" }).ExecuteCommand();
+
+            //subquery select
+            var result = db.Queryable<Student>()
+               .Select(st => new
+               {
+                   SchoolName = SqlFunc.Subqueryable<School>().Where(s => s.Id == st.SchoolId).Select(s => s.Name),
+                   MaxSchoolId = SqlFunc.Subqueryable<School>().Where(s => s.Id == st.SchoolId).Select(s => SqlFunc.AggregateMax(s.Id)),
+                   MaxSchoolId2 = SqlFunc.Subqueryable<School>().Where(s => s.Id == st.SchoolId).Max(s => s.Id),
+               })
+               .ToList();
+
+            //Exists:
+            //SELECT [Id],[SchoolId] FROM [Student0402] [it]  WHERE (EXISTS ( SELECT * FROM [School0402] [s]  WHERE ( [Id] = [it].[SchoolId] ) ))
+            var result2 = db.Queryable<Student>()
+              .Where(it => SqlFunc.Subqueryable<School>().Where(s => s.Id == it.SchoolId).Any())
+              .ToList();
+
+            //In:
+            //SELECT [Id],[SchoolId] FROM [Student0402] [it]  WHERE  [Id]  in (SELECT [Id] FROM [School0402] [s]  GROUP BY [Id])
+            var result3 = db.Queryable<Student>()
+            .Where(it => it.Id == SqlFunc.Subqueryable<School>().GroupBy(s => s.Id).Select(s => s.Id))
+            .ToList();
+
+            //Equal:
+            //SELECT [Id],[SchoolId] FROM [Student0402] [it]  WHERE ( [Id] =(SELECT TOP 1 [s].[Id] FROM [School0402] [s] ))
+            var result4 = db.Queryable<Student>()
+            .Where(it => it.Id == SqlFunc.Subqueryable<School>().Select(s => s.Id))
+            .ToList();
+        }
+
+        [SugarTable("Student0402")]
+        public class Student
+        {
+            public int Id { get; set; }
+            public int SchoolId { get; set; }
+        }
+        [SugarTable("School0402")]
+        public class School
+        {
+            public int Id { get; set; }
+            public string Name { get; set; }
+        }
+
+    }
+}
diff --git a/Src/Asp.Net/SqliteTest/Program.cs b/Src/Asp.Net/SqliteTest/Program.cs
index c59883ff0..5e869633a 100644
--- a/Src/Asp.Net/SqliteTest/Program.cs
+++ b/Src/Asp.Net/SqliteTest/Program.cs
@@ -15,6 +15,7 @@ namespace OrmTest
             _2_DbFirst.Init();
             _3_EasyQuery.Init();
             _4_JoinQuery.Init();
+            _4_Subquery.Init();
             _5_PageQuery.Init();
             _6_NavQuery.Init();
             _7_GroupQuery.Init();
diff --git a/Src/Asp.Net/SqliteTest/SqliteTest.csproj b/Src/Asp.Net/SqliteTest/SqliteTest.csproj
index 1015b9ba7..9d5326bef 100644
--- a/Src/Asp.Net/SqliteTest/SqliteTest.csproj
+++ b/Src/Asp.Net/SqliteTest/SqliteTest.csproj
@@ -49,6 +49,7 @@
     <Compile Include="2_DbFirst.cs" />
     <Compile Include="3_EasyQuery.cs" />
     <Compile Include="4_JoinQuery.cs" />
+    <Compile Include="4_Subquery.cs" />
     <Compile Include="5_PageQuery.cs" />
     <Compile Include="6_NavigationPropertyQuery.cs" />
     <Compile Include="7_GroupQuery.cs" />