diff --git a/Src/Asp.Net/MySqlTest/Demos/1_Query.cs b/Src/Asp.Net/MySqlTest/Demos/1_Query.cs
index 08481165f..d49c90dd2 100644
--- a/Src/Asp.Net/MySqlTest/Demos/1_Query.cs
+++ b/Src/Asp.Net/MySqlTest/Demos/1_Query.cs
@@ -153,6 +153,7 @@ namespace OrmTest.Demo
         {
             var db = GetInstance();
             var getAll = db.Queryable<Student>().ToList();
+            var getLike = db.Queryable<Student>().Where(it => it.Name.Contains("a")).ToList();
             var getAllOrder = db.Queryable<Student>().OrderBy(it => it.Id).OrderBy(it => it.Name, OrderByType.Desc).ToList();
             var getId = db.Queryable<Student>().Select(it => it.Id).ToList();
             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();
diff --git a/Src/Asp.Net/MySqlTest/Program.cs b/Src/Asp.Net/MySqlTest/Program.cs
index 8ec4fd083..090c0e9c7 100644
--- a/Src/Asp.Net/MySqlTest/Program.cs
+++ b/Src/Asp.Net/MySqlTest/Program.cs
@@ -20,7 +20,7 @@ namespace OrmTest
         //    /***Unit Test***/
               new Field(1).Init();
               new Where(1).Init();
-          //    new Method(1).Init();
+              new Method(1).Init();
         //    new JoinQuery(1).Init();
         //    new SingleQuery(1).Init();
         //    new SelectQuery(1).Init();
diff --git a/Src/Asp.Net/MySqlTest/UnitTest/ExpressionTest/Method.cs b/Src/Asp.Net/MySqlTest/UnitTest/ExpressionTest/Method.cs
index ed5914b6f..8fa6f7b38 100644
--- a/Src/Asp.Net/MySqlTest/UnitTest/ExpressionTest/Method.cs
+++ b/Src/Asp.Net/MySqlTest/UnitTest/ExpressionTest/Method.cs
@@ -75,11 +75,11 @@ namespace OrmTest.UnitTest
         private void ExtendToString()
         {
             Expression<Func<Student, bool>> exp = it => it.Id.ToString() == "a";
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, "(CAST(`Id` AS NVARCHAR(MAX)) = @Const0 )", new List<SugarParameter>() {
+            base.Check(value, pars, "(CAST(`Id` AS CHAR) = @Const0 )", new List<SugarParameter>() {
                  new SugarParameter("@Const0","a")
             }, "ExtendToString error");
         }
@@ -87,11 +87,11 @@ namespace OrmTest.UnitTest
         private void ConvetToString()
         {
             Expression<Func<Student, bool>> exp = it => Convert.ToString(it.Id) == "a";
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, "(CAST(`Id` AS NVARCHAR(MAX)) = @Const0 )", new List<SugarParameter>() {
+            base.Check(value, pars, "(CAST(`Id` AS CHAR) = @Const0 )", new List<SugarParameter>() {
                  new SugarParameter("@Const0","a")
             }, "ConvetToString error");
         }
@@ -100,11 +100,11 @@ namespace OrmTest.UnitTest
         private void Length()
         {
             Expression<Func<Student, bool>> exp = it => SqlFunc.Length("aaaa") > 1;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, "(LEN(@MethodConst0) > @Const1 )", new List<SugarParameter>() {
+            base.Check(value, pars, "(LENGTH(@MethodConst0) > @Const1 )", new List<SugarParameter>() {
                 new SugarParameter("@MethodConst0","aaaa"),new SugarParameter("@Const1",1)
             }, "Length error");
         }
@@ -113,7 +113,7 @@ namespace OrmTest.UnitTest
         {
             var x2 = Guid.NewGuid();
             Expression<Func<Student, bool>> exp = it => SqlFunc.Replace("aaaa", "a", "1") == "a";
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -126,7 +126,7 @@ namespace OrmTest.UnitTest
         {
             var x2 = Guid.NewGuid();
             Expression<Func<Student, bool>> exp = it => SqlFunc.Substring("aaaa", 0, 2) == "a";
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -138,7 +138,7 @@ namespace OrmTest.UnitTest
         {
             var x2 = Guid.NewGuid();
             Expression<Func<Student, bool>> exp = it =>"aaaa".Substring(0, 2)== "a";
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -152,11 +152,11 @@ namespace OrmTest.UnitTest
         {
             var x2 = Guid.NewGuid();
             Expression<Func<Student, bool>> exp = it => SqlFunc.ToBool("true") == true;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, "(CAST(@MethodConst0 AS BIT) = @Const1 )", new List<SugarParameter>() {
+            base.Check(value, pars, "(CAST(@MethodConst0 AS SIGNED) = @Const1 )", new List<SugarParameter>() {
                 new SugarParameter("@MethodConst0","true"),new SugarParameter("@Const1",(bool)true)
             }, "ToBool error");
         }
@@ -165,11 +165,11 @@ namespace OrmTest.UnitTest
         {
             var x2 = Guid.NewGuid();
             Expression<Func<Student, bool>> exp = it => SqlFunc.ToDouble("2") == 2;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, "(CAST(@MethodConst0 AS FLOAT) = @Const1 )", new List<SugarParameter>() {
+            base.Check(value, pars, "(CAST(@MethodConst0 AS DECIMAL(18,4)) = @Const1 )", new List<SugarParameter>() {
                 new SugarParameter("@MethodConst0","2"),new SugarParameter("@Const1",(Double)2)
             }, "ToDouble error");
         }
@@ -178,11 +178,11 @@ namespace OrmTest.UnitTest
         {
             var x2 = Guid.NewGuid();
             Expression<Func<Student, bool>> exp = it => SqlFunc.ToGuid("A94027A3-476E-478D-8228-F4054394B874") == x2;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, "(CAST(@MethodConst0 AS UNIQUEIDENTIFIER) = @Const1 )", new List<SugarParameter>() {
+            base.Check(value, pars, "(CAST(@MethodConst0 AS CHAR) = @Const1 )", new List<SugarParameter>() {
                 new SugarParameter("@MethodConst0","A94027A3-476E-478D-8228-F4054394B874"),new SugarParameter("@Const1",x2)
             }, "ToGuid error");
         }
@@ -191,11 +191,11 @@ namespace OrmTest.UnitTest
         {
             var x2 = DateTime.Now;
             Expression<Func<Student, bool>> exp = it => SqlFunc.ToDecimal("22") == 1;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, "(CAST(@MethodConst0 AS MONEY) = @Const1 )", new List<SugarParameter>() {
+            base.Check(value, pars, "(CAST(@MethodConst0 AS DECIMAL(18,4)) = @Const1 )", new List<SugarParameter>() {
                 new SugarParameter("@MethodConst0","22"),new SugarParameter("@Const1",(decimal)1)
             }, "ToDecimal error");
         }
@@ -204,11 +204,11 @@ namespace OrmTest.UnitTest
         {
             var x2 = DateTime.Now;
             Expression<Func<Student, bool>> exp = it => SqlFunc.ToString("2015-1-1") == "a";
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, "(CAST(@MethodConst0 AS NVARCHAR(MAX)) = @Const1 )", new List<SugarParameter>() {
+            base.Check(value, pars, "(CAST(@MethodConst0 AS CHAR) = @Const1 )", new List<SugarParameter>() {
                 new SugarParameter("@MethodConst0","2015-1-1"),new SugarParameter("@Const1","a")
             }, "Tostring error");
         }
@@ -217,7 +217,7 @@ namespace OrmTest.UnitTest
         {
             var x2 = DateTime.Now;
             Expression<Func<Student, bool>> exp = it => SqlFunc.ToDate("2015-1-1") == x2;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -229,7 +229,7 @@ namespace OrmTest.UnitTest
         {
             var x2 = DateTime.Now;
             Expression<Func<Student, bool>> exp = it => Convert.ToDateTime("2015-1-1") == x2;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -242,11 +242,11 @@ namespace OrmTest.UnitTest
         {
             var x2 = DateTime.Now;
             Expression<Func<Student, bool>> exp = it => SqlFunc.ToInt64("3") == 1;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, "(CAST(@MethodConst0 AS BIGINT) = @Const1 )", new List<SugarParameter>() {
+            base.Check(value, pars, "(CAST(@MethodConst0 AS SIGNED) = @Const1 )", new List<SugarParameter>() {
                 new SugarParameter("@MethodConst0","3"),new SugarParameter("@Const1",(Int64)1)
             }, "ToInt64 error");
         }
@@ -255,11 +255,11 @@ namespace OrmTest.UnitTest
         {
             var x2 = DateTime.Now;
             Expression<Func<Student, bool>> exp = it => SqlFunc.ToInt32("3") == 1;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, "(CAST(@MethodConst0 AS INT) = @Const1 )", new List<SugarParameter>() {
+            base.Check(value, pars, "(CAST(@MethodConst0 AS SIGNED) = @Const1 )", new List<SugarParameter>() {
                 new SugarParameter("@MethodConst0","3"),new SugarParameter("@Const1",1)
             }, "ToInt32 error");
         }
@@ -268,7 +268,7 @@ namespace OrmTest.UnitTest
         {
             var x2 = DateTime.Now;
             Expression<Func<Student, bool>> exp = it => SqlFunc.DateValue(x2, DateType.Year) == 1;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -280,29 +280,29 @@ namespace OrmTest.UnitTest
         private void StartsWith()
         {
             Expression<Func<Student, bool>> exp = it => SqlFunc.StartsWith(it.Name, "a");
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, " (`Name` like @MethodConst0+'%') ", new List<SugarParameter>() {
+            base.Check(value, pars, " (`Name` like concat(@MethodConst0,'%')) ", new List<SugarParameter>() {
                 new SugarParameter("@MethodConst0","a")
             }, "StartsWith error");
         }
         private void EndsWith()
         {
             Expression<Func<Student, bool>> exp = it => SqlFunc.EndsWith(it.Name, "a");
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, " (`Name` like '%'+@MethodConst0) ", new List<SugarParameter>() {
+            base.Check(value, pars, " (`Name` like concat('%',@MethodConst0)) ", new List<SugarParameter>() {
                 new SugarParameter("@MethodConst0","a")
             }, "EndsWith");
         }
         private void Between()
         {
             Expression<Func<Student, bool>> exp = it => SqlFunc.Between(it.Name, 1, 2);
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -315,11 +315,11 @@ namespace OrmTest.UnitTest
         {
             var x2 = DateTime.Now;
             Expression<Func<Student, bool>> exp = it => SqlFunc.DateAdd(x2, 11, DateType.Millisecond) == x2;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, "((DATEADD(@MethodConst2,@MethodConst1,@MethodConst0)) = @Const3 )", new List<SugarParameter>() {
+            base.Check(value, pars, "((DATE_ADD(@MethodConst1 INTERVAL @MethodConst2 @MethodConst0)) = @Const3 )", new List<SugarParameter>() {
                 new SugarParameter("@MethodConst0",x2),new SugarParameter("@MethodConst1",11),new SugarParameter("@Const3",x2),
                 new SugarParameter("@MethodConst2",DateType.Millisecond)
             }, "DateAddByType error");
@@ -328,11 +328,11 @@ namespace OrmTest.UnitTest
         {
             var x2 = DateTime.Now;
             Expression<Func<Student, bool>> exp = it => SqlFunc.DateAdd(x2, 1) == x2;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, "((DATEADD(day,@MethodConst1,@MethodConst0)) = @Const2 )", new List<SugarParameter>() {
+            base.Check(value, pars, "((DATE_ADD(@MethodConst1 INTERVAL @MethodConst0 day)) = @Const2 )", new List<SugarParameter>() {
                 new SugarParameter("@MethodConst0",x2),new SugarParameter("@MethodConst1",1),new SugarParameter("@Const2",x2)
             }, "DateIsSameByType error");
         }
@@ -341,11 +341,11 @@ namespace OrmTest.UnitTest
         {
             var x2 = DateTime.Now;
             Expression<Func<Student, bool>> exp = it => SqlFunc.DateIsSame(x2, x2, DateType.Millisecond);
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, " (DATEDIFF(@MethodConst2,@MethodConst0,@MethodConst1)=0) ", new List<SugarParameter>() {
+            base.Check(value, pars, " (TIMESTAMPDIFF(@MethodConst2,@MethodConst0,@MethodConst1)=0) ", new List<SugarParameter>() {
                 new SugarParameter("@MethodConst0",x2),new SugarParameter("@MethodConst1",x2),
                 new SugarParameter("@MethodConst2",DateType.Millisecond)
             }, "DateIsSameByType error");
@@ -354,11 +354,11 @@ namespace OrmTest.UnitTest
         {
             var x2 = DateTime.Now;
             Expression<Func<Student, bool>> exp = it => SqlFunc.DateIsSame(x2, x2);
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, "(DATEDIFF(day,@MethodConst0,@MethodConst1)=0) ", new List<SugarParameter>() {
+            base.Check(value, pars, "(TIMESTAMPDIFF(day,@MethodConst0,@MethodConst1)=0) ", new List<SugarParameter>() {
                 new SugarParameter("@MethodConst0",x2),new SugarParameter("@MethodConst1",x2)
             }, "DateIsSameDay error");
         }
@@ -366,7 +366,7 @@ namespace OrmTest.UnitTest
         private void Equals()
         {
             Expression<Func<Student, bool>> exp = it => SqlFunc.Equals(it.Name, "a");
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -376,7 +376,7 @@ namespace OrmTest.UnitTest
 
 
             Expression<Func<Student, bool>> exp2 = it => SqlFunc.Equals("a", it.Name);
-            SqlServerExpressionContext expContext2 = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext2 = new MySqlExpressionContext();
             expContext2.Resolve(exp2, ResolveExpressType.WhereSingle);
             var value2 = expContext2.Result.GetString();
             var pars2 = expContext2.Parameters;
@@ -387,7 +387,7 @@ namespace OrmTest.UnitTest
         private void Equals_2()
         {
             Expression<Func<Student, bool>> exp = it => SqlFunc.Equals(it.Name, it.Name);
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -397,7 +397,7 @@ namespace OrmTest.UnitTest
 
 
             Expression<Func<Student, bool>> exp2 = it => SqlFunc.Equals("a", "a2");
-            SqlServerExpressionContext expContext2 = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext2 = new MySqlExpressionContext();
             expContext2.Resolve(exp2, ResolveExpressType.WhereSingle);
             var value2 = expContext2.Result.GetString();
             var pars2 = expContext2.Parameters;
@@ -409,22 +409,22 @@ namespace OrmTest.UnitTest
         private void Contains()
         {
             Expression<Func<Student, bool>> exp = it => SqlFunc.Contains(it.Name, "a");
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, " (`Name` like '%'+@MethodConst0+'%') ", new List<SugarParameter>() {
+            base.Check(value, pars, " (`Name` like concat('%',@MethodConst0,'%')) ", new List<SugarParameter>() {
                 new SugarParameter("@MethodConst0","a")
             }, "Contains error");
         }
         private void Contains2(string name="a")
         {
             Expression<Func<Student, bool>> exp = it => SqlFunc.Contains(it.Name, name);
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, " (`Name` like '%'+@MethodConst0+'%') ", new List<SugarParameter>() {
+            base.Check(value, pars, " (`Name` like concat('%',@MethodConst0,'%')) ", new List<SugarParameter>() {
                 new SugarParameter("@MethodConst0","a")
             }, "Contains2 error");
         }
@@ -432,7 +432,7 @@ namespace OrmTest.UnitTest
         private void ExtendContainsArray() {
             var array = new string[] { "1", "2" }.ToList();
             Expression<Func<Student, bool>> exp = it => array.Contains(it.Name);
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -443,7 +443,7 @@ namespace OrmTest.UnitTest
         {
             string[] array = new string[] { "1", "2" };
             Expression<Func<Student, bool>> exp = it => SqlFunc.ContainsArray(array, it.Name);
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -453,7 +453,7 @@ namespace OrmTest.UnitTest
         private void Trim()
         {
             Expression<Func<Student, bool>> exp = it => SqlFunc.Trim("  a") == it.Name;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -465,7 +465,7 @@ namespace OrmTest.UnitTest
         private void ToUpper()
         {
             Expression<Func<Student, bool>> exp = it => "a" == SqlFunc.ToUpper(it.Id);
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -476,7 +476,7 @@ namespace OrmTest.UnitTest
         private void ToLower()
         {
             Expression<Func<Student, bool>> exp = it => "a" == SqlFunc.ToLower(it.Id);
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -489,7 +489,7 @@ namespace OrmTest.UnitTest
         private void StringIsNullOrEmpty()
         {
             Expression<Func<Student, bool>> exp = it => it.Id > 2 || SqlFunc.IsNullOrEmpty(it.Id); ;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -500,7 +500,7 @@ namespace OrmTest.UnitTest
         private void StringIsNullOrEmpty2()
         {
             Expression<Func<Student, bool>> exp = it => 2 == it.Id || SqlFunc.IsNullOrEmpty(true); ;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -513,7 +513,7 @@ namespace OrmTest.UnitTest
         {
             int a = 1;
             Expression<Func<Student, bool>> exp = it => 2 == it.Id || SqlFunc.IsNullOrEmpty(a); ;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -526,7 +526,7 @@ namespace OrmTest.UnitTest
         {
             WhereConst.name = "xx";
             Expression<Func<Student, bool>> exp = it => 2 == it.Id || SqlFunc.IsNullOrEmpty(WhereConst.name); ;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -539,7 +539,7 @@ namespace OrmTest.UnitTest
         {
             WhereConst.name = "xx";
             Expression<Func<Student, bool>> exp = it => !SqlFunc.IsNullOrEmpty(WhereConst.name); ;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -552,7 +552,7 @@ namespace OrmTest.UnitTest
         private void HasValue()
         {
             Expression<Func<Student, bool>> exp = it => SqlFunc.HasValue(it.Name);
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -565,7 +565,7 @@ namespace OrmTest.UnitTest
         private void HasNumber()
         {
             Expression<Func<Student, bool>> exp = it => SqlFunc.HasNumber(it.Id);
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -579,7 +579,7 @@ namespace OrmTest.UnitTest
         private void IIF()
         {
             Expression<Func<Student, bool>> exp = it => SqlFunc.IIF(it.Id == 1, 1, 2)==1;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
@@ -595,11 +595,11 @@ namespace OrmTest.UnitTest
         private void IIF2()
         {
             Expression<Func<Student, bool>> exp = it => SqlFunc.IIF(SqlFunc.Contains(it.Name,"a"), 1, 2)==1;
-            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            MySqlExpressionContext expContext = new MySqlExpressionContext();
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, "(( CASE  WHEN  (`Name` like '%'+@MethodConst0+'%')  THEN @MethodConst1  ELSE @MethodConst2 END ) = @Const3 )", new List<SugarParameter>()
+            base.Check(value, pars, "(( CASE  WHEN  (`Name` like concat('%',@MethodConst0,'%'))  THEN @MethodConst1  ELSE @MethodConst2 END ) = @Const3 )", new List<SugarParameter>()
             {
                      new SugarParameter("@MethodConst0","a"),
                      new SugarParameter("@MethodConst1",1),
diff --git a/Src/Asp.Net/SqlSugar/Realization/MySql/SqlBuilder/MySqlExpressionContext.cs b/Src/Asp.Net/SqlSugar/Realization/MySql/SqlBuilder/MySqlExpressionContext.cs
index a69a66807..2736d588d 100644
--- a/Src/Asp.Net/SqlSugar/Realization/MySql/SqlBuilder/MySqlExpressionContext.cs
+++ b/Src/Asp.Net/SqlSugar/Realization/MySql/SqlBuilder/MySqlExpressionContext.cs
@@ -59,21 +59,21 @@ namespace SqlSugar
         {
             var parameter = model.Args[0];
             var parameter2 = model.Args[1];
-            return string.Format(" ({0} like {1}) ", parameter.MemberName, "%" + parameter2.MemberName + "%" );
+            return string.Format(" ({0} like concat('%',{1},'%')) ", parameter.MemberName, parameter2.MemberName  );
         }
 
         public override string StartsWith(MethodCallExpressionModel model)
         {
             var parameter = model.Args[0];
             var parameter2 = model.Args[1];
-            return string.Format(" ({0} like {1}) ", parameter.MemberName, parameter2.MemberName + "%");
+            return string.Format(" ({0} like concat({1},'%')) ", parameter.MemberName, parameter2.MemberName);
         }
 
         public override string EndsWith(MethodCallExpressionModel model)
         {
             var parameter = model.Args[0];
             var parameter2 = model.Args[1];
-            return string.Format(" ({0} like {1}) ", parameter.MemberName, "%"+parameter2.MemberName);
+            return string.Format(" ({0} like concat('%',{1}))", parameter.MemberName,parameter2.MemberName);
         }
 
         public override string DateIsSameDay(MethodCallExpressionModel model)
@@ -121,13 +121,13 @@ namespace SqlSugar
         public override string ToString(MethodCallExpressionModel model)
         {
             var parameter = model.Args[0];
-            return string.Format(" CAST({0} AS CHAR", parameter.MemberName);
+            return string.Format(" CAST({0} AS CHAR)", parameter.MemberName);
         }
 
         public override string ToGuid(MethodCallExpressionModel model)
         {
             var parameter = model.Args[0];
-            return string.Format(" CAST({0} AS CHAR", parameter.MemberName);
+            return string.Format(" CAST({0} AS CHAR)", parameter.MemberName);
         }
 
         public override string ToDouble(MethodCallExpressionModel model)