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SqlServerTest/UnitTest/Query/JoinQuery.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using SqlSugar;
+using System.Linq.Expressions;
+using OrmTest.Models;
+namespace OrmTest.UnitTest
+{
+    public class JoinQuery : UnitTestBase
+    {
+        private JoinQuery() { }
+        public JoinQuery(int eachCount)
+        {
+            this.Count = eachCount;
+        }
+        internal void Init()
+        {
+            base.Begin();
+            for (int i = 0; i < base.Count; i++)
+            {
+                Q1();
+                Q2();
+                Q3();
+            }
+            base.End("Method Test");
+        }
+
+        private void Q3()
+        {
+            using (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.*").ToSql();
+                string sql = @"SELECT st.* FROM [STudent] st Left JOIN School sh ON sh.id=st.schoolid   WHERE st.id>@id ";
+                base.Check(sql,new List<SugarParameter>() {new SugarParameter("@id",1)}, join3.Key, join3.Value, "join 3 Error");
+            }
+        }
+
+        public void Q1()
+        {
+            using (var db = GetInstance())
+            {
+                var join1 = db.Queryable<Student, School>((st, sc) => new object[] {
+                          JoinType.Left,st.SchoolId==sc.Id
+                }).Where(st => st.Id > 0).Select<Student>("*").ToSql();
+                base.Check(@"SELECT * FROM [STudent] st Left JOIN School sc ON ( [st].[SchoolId] =[sc].[Id])   WHERE ( [st].[ID] > @Id0 ) ",
+                    new List<SugarParameter>() {
+                        new SugarParameter("@Id0",0)
+                    }, join1.Key, join1.Value, "join 1 Error");
+            }
+        }
+        public void Q2()
+        {
+            using (var db = GetInstance())
+            {
+                var join2 = db.Queryable<Student, School>((st, sc) => new object[] {
+                          JoinType.Left,st.SchoolId==sc.Id
+                }).Where(st => st.Id > 2).Select<Student>("*").ToSql();
+                base.Check(@"SELECT * FROM [STudent] st Left JOIN School sc ON ( [st].[SchoolId] =[sc].[Id])   WHERE ( [st].[ID] > @Id0 ) ",
+    new List<SugarParameter>() {
+                        new SugarParameter("@Id0",2)
+    }, join2.Key, join2.Value, "join 1 Error");
+            }
+        }
+
+
+        public SqlSugarClient GetInstance()
+        {
+            SqlSugarClient db = new SqlSugarClient(new SystemTableConfig() { ConnectionString = Config.ConnectionString, DbType = DbType.SqlServer });
+            db.Ado.IsEnableLogEvent = true;
+            db.Ado.LogEventStarting = (sql, pars) =>
+            {
+                Console.WriteLine(sql + " " + pars);
+            };
+            return db;
+        }
+    }
+}