using FreeSql.DataAnnotations;
using System;
using System.Collections.Generic;
using System.Linq;
using Xunit;

namespace FreeSql.Tests.MySql.Expression {
	public class StringTest {

		ISelect<Topic> select => g.mysql.Select<Topic>();

		[Table(Name = "tb_topic")]
		class Topic {
			[Column(IsIdentity = true, IsPrimary = true)]
			public int Id { get; set; }
			public int Clicks { get; set; }
			public int TestTypeInfoGuid { get; set; }
			public TestTypeInfo Type { get; set; }
			public string Title { get; set; }
			public DateTime CreateTime { get; set; }
		}
		class TestTypeInfo {
			public int Guid { get; set; }
			public int ParentId { get; set; }
			public TestTypeParentInfo Parent { get; set; }
			public string Name { get; set; }
		}
		class TestTypeParentInfo {
			public int Id { get; set; }
			public string Name { get; set; }

			public List<TestTypeInfo> Types { get; set; }
		}

		[Fact]
		public void StartsWith() {
			var list = select.Where(a => a.Title.StartsWith("aaa")).ToList();
			list = select.Where(a => a.Title.StartsWith(a.Title)).ToList();
			list = select.Where(a => a.Title.StartsWith(a.Title + 1)).ToList();
			list = select.Where(a => a.Title.StartsWith(a.Type.Name)).ToList();
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE((a.`Title`) LIKE '%aaa')

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE((a.`Title`) LIKE concat('%', a.`Title`))

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE((a.`Title`) LIKE concat('%', concat(a.`Title`, 1)))

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8
			//FROM `tb_topic` a, `TestTypeInfo` a__Type
			//WHERE((a.`Title`) LIKE concat('%', a__Type.`Name`))
			list = select.Where(a => (a.Title + "aaa").StartsWith("aaa")).ToList();
			list = select.Where(a => (a.Title + "aaa").StartsWith(a.Title)).ToList();
			list = select.Where(a => (a.Title + "aaa").StartsWith(a.Title + 1)).ToList();
			list = select.Where(a => (a.Title + "aaa").StartsWith(a.Type.Name)).ToList();
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE((concat(a.`Title`, 'aaa')) LIKE '%aaa')

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE((concat(a.`Title`, 'aaa')) LIKE concat('%', a.`Title`))

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE((concat(a.`Title`, 'aaa')) LIKE concat('%', concat(a.`Title`, 1)))

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8
			//FROM `tb_topic` a, `TestTypeInfo` a__Type
			//WHERE((concat(a.`Title`, 'aaa')) LIKE concat('%', a__Type.`Name`))
		}
		[Fact]
		public void EndsWith() {
			var list = select.Where(a => a.Title.EndsWith("aaa")).ToList();
			list = select.Where(a => a.Title.EndsWith(a.Title)).ToList();
			list = select.Where(a => a.Title.EndsWith(a.Title + 1)).ToList();
			list = select.Where(a => a.Title.EndsWith(a.Type.Name)).ToList();
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE((a.`Title`) LIKE 'aaa%')

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE((a.`Title`) LIKE concat(a.`Title`, '%'))

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE((a.`Title`) LIKE concat(concat(a.`Title`, 1), '%'))

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8
			//FROM `tb_topic` a, `TestTypeInfo` a__Type
			//WHERE((a.`Title`) LIKE concat(a__Type.`Name`, '%'))
			list = select.Where(a => (a.Title + "aaa").EndsWith("aaa")).ToList();
			list = select.Where(a => (a.Title + "aaa").EndsWith(a.Title)).ToList();
			list = select.Where(a => (a.Title + "aaa").EndsWith(a.Title + 1)).ToList();
			list = select.Where(a => (a.Title + "aaa").EndsWith(a.Type.Name)).ToList();
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE((concat(a.`Title`, 'aaa')) LIKE 'aaa%')

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE((concat(a.`Title`, 'aaa')) LIKE concat(a.`Title`, '%'))

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE((concat(a.`Title`, 'aaa')) LIKE concat(concat(a.`Title`, 1), '%'))

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8
			//FROM `tb_topic` a, `TestTypeInfo` a__Type
			//WHERE((concat(a.`Title`, 'aaa')) LIKE concat(a__Type.`Name`, '%'))
		}
		[Fact]
		public void Contains() {
			var ToList = select.Where(a => a.Title.Contains("aaa")).ToList();
			ToList = select.Where(a => a.Title.Contains(a.Title)).ToList();
			ToList = select.Where(a => a.Title.Contains(a.Title + 1)).ToList();
			ToList = select.Where(a => a.Title.Contains(a.Type.Name)).ToList();
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE((a.`Title`) LIKE '%aaa%')

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE((a.`Title`) LIKE concat('%', a.`Title`, '%'))

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE((a.`Title`) LIKE concat('%', a.`Title` +1, '%'))

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8
			//FROM `tb_topic` a, `TestTypeInfo` a__Type
			//WHERE((a.`Title`) LIKE concat('%', a__Type.`Name`, '%'))
			ToList = select.Where(a => (a.Title + "aaa").Contains("aaa")).ToList();
			ToList = select.Where(a => (a.Title + "aaa").Contains(a.Title)).ToList();
			ToList = select.Where(a => (a.Title + "aaa").Contains(a.Title + 1)).ToList();
			ToList = select.Where(a => (a.Title + "aaa").Contains(a.Type.Name)).ToList();
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE((concat(a.`Title`, 'aaa')) LIKE '%aaa%')

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE((concat(a.`Title`, 'aaa')) LIKE concat('%', a.`Title`, '%'))

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE((concat(a.`Title`, 'aaa')) LIKE concat('%', concat(a.`Title`, 1), '%'))

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8
			//FROM `tb_topic` a, `TestTypeInfo` a__Type
			//WHERE((concat(a.`Title`, 'aaa')) LIKE concat('%', a__Type.`Name`, '%'))
		}
		[Fact]
		public void ToLower() {
			var data = new List<object>();
			data.Add(select.Where(a => a.Title.ToLower() == "aaa").ToList());
			data.Add(select.Where(a => a.Title.ToLower() == a.Title).ToList());
			data.Add(select.Where(a => a.Title.ToLower() == (a.Title + 1)).ToList());
			data.Add(select.Where(a => a.Title.ToLower() == a.Type.Name).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE(lower(a.`Title`) = 'aaa');

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE(lower(a.`Title`) = a.`Title`);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE(lower(a.`Title`) = concat(a.`Title`, 1));

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8
			//FROM `tb_topic` a, `TestTypeInfo` a__Type
			//WHERE(lower(a.`Title`) = a__Type.`Name`);
			data.Add(select.Where(a => (a.Title.ToLower() + "aaa").ToLower() == "aaa").ToList());
			data.Add(select.Where(a => (a.Title.ToLower() + "aaa").ToLower() == a.Title).ToList());
			data.Add(select.Where(a => (a.Title.ToLower() + "aaa").ToLower() == (a.Title + 1)).ToList());
			data.Add(select.Where(a => (a.Title.ToLower() + "aaa").ToLower() == a.Type.Name).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE(lower(concat(lower(a.`Title`), 'aaa')) = 'aaa');

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE(lower(concat(lower(a.`Title`), 'aaa')) = a.`Title`);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5
			//FROM `tb_topic` a
			//WHERE(lower(concat(lower(a.`Title`), 'aaa')) = concat(a.`Title`, 1));

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8
			//FROM `tb_topic` a, `TestTypeInfo` a__Type
			//WHERE(lower(concat(lower(a.`Title`), 'aaa')) = a__Type.`Name`)
		}
		[Fact]
		public void ToUpper() {
			var data = new List<object>();
			data.Add(select.Where(a => a.Title.ToUpper() == "aaa").ToList());
			data.Add(select.Where(a => a.Title.ToUpper() == a.Title).ToList());
			data.Add(select.Where(a => a.Title.ToUpper() == (a.Title + 1)).ToList());
			data.Add(select.Where(a => a.Title.ToUpper() == a.Type.Name).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (upper(a.`Title`) = 'aaa');

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (upper(a.`Title`) = a.`Title`);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (upper(a.`Title`) = concat(a.`Title`, 1));

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (upper(a.`Title`) = a__Type.`Name`);
			data.Add(select.Where(a => (a.Title.ToUpper() + "aaa").ToUpper() == "aaa").ToList());
			data.Add(select.Where(a => (a.Title.ToUpper() + "aaa").ToUpper() == a.Title).ToList());
			data.Add(select.Where(a => (a.Title.ToUpper() + "aaa").ToUpper() == (a.Title + 1)).ToList());
			data.Add(select.Where(a => (a.Title.ToUpper() + "aaa").ToUpper() == a.Type.Name).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (upper(concat(upper(a.`Title`), 'aaa')) = 'aaa');

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (upper(concat(upper(a.`Title`), 'aaa')) = a.`Title`);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (upper(concat(upper(a.`Title`), 'aaa')) = concat(a.`Title`, 1));

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (upper(concat(upper(a.`Title`), 'aaa')) = a__Type.`Name`)
		}
		[Fact]
		public void Substring() {
			var data = new List<object>();
			data.Add(select.Where(a => a.Title.Substring(0) == "aaa").ToList());
			data.Add(select.Where(a => a.Title.Substring(0) == a.Title).ToList());
			data.Add(select.Where(a => a.Title.Substring(0) == (a.Title + 1)).ToList());
			data.Add(select.Where(a => a.Title.Substring(0) == a.Type.Name).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (substr(a.`Title`, 1) = 'aaa');

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (substr(a.`Title`, 1) = a.`Title`);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (substr(a.`Title`, 1) = concat(a.`Title`, 1));

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (substr(a.`Title`, 1) = a__Type.`Name`);
			data.Add(select.Where(a => (a.Title.Substring(0) + "aaa").Substring(a.Title.Length) == "aaa").ToList());
			data.Add(select.Where(a => (a.Title.Substring(0) + "aaa").Substring(0, a.Title.Length) == a.Title).ToList());
			data.Add(select.Where(a => (a.Title.Substring(0) + "aaa").Substring(0, 3) == (a.Title + 1)).ToList());
			data.Add(select.Where(a => (a.Title.Substring(0) + "aaa").Substring(1, 2) == a.Type.Name).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (substr(concat(substr(a.`Title`, 1), 'aaa'), char_length(a.`Title`) + 1) = 'aaa');

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (substr(concat(substr(a.`Title`, 1), 'aaa'), 1, char_length(a.`Title`)) = a.`Title`);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (substr(concat(substr(a.`Title`, 1), 'aaa'), 1, 3) = concat(a.`Title`, 1));

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (substr(concat(substr(a.`Title`, 1), 'aaa'), 2, 2) = a__Type.`Name`)
		}
		[Fact]
		public void Length() {
			var data = new List<object>();
			data.Add(select.Where(a => a.Title.Length == 0).ToList());
			data.Add(select.Where(a => a.Title.Length == 1).ToList());
			data.Add(select.Where(a => a.Title.Length == a.Title.Length + 1).ToList());
			data.Add(select.Where(a => a.Title.Length == a.Type.Name.Length).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (char_length(a.`Title`) = 0);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (char_length(a.`Title`) = 1);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (char_length(a.`Title`) = char_length(a.`Title`) + 1);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (char_length(a.`Title`) = char_length(a__Type.`Name`));
			data.Add(select.Where(a => (a.Title + "aaa").Length == 0).ToList());
			data.Add(select.Where(a => (a.Title + "aaa").Length == 1).ToList());
			data.Add(select.Where(a => (a.Title + "aaa").Length == a.Title.Length + 1).ToList());
			data.Add(select.Where(a => (a.Title + "aaa").Length == a.Type.Name.Length).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (char_length(concat(a.`Title`, 'aaa')) = 0);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (char_length(concat(a.`Title`, 'aaa')) = 1);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (char_length(concat(a.`Title`, 'aaa')) = char_length(a.`Title`) + 1);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (char_length(concat(a.`Title`, 'aaa')) = char_length(a__Type.`Name`))
		}
		[Fact]
		public void IndexOf() {
			var data = new List<object>();
			data.Add(select.Where(a => a.Title.IndexOf("aaa") == -1).ToList());
			data.Add(select.Where(a => a.Title.IndexOf("aaa", 2) == -1).ToList());
			data.Add(select.Where(a => a.Title.IndexOf("aaa", 2) == (a.Title.Length + 1)).ToList());
			data.Add(select.Where(a => a.Title.IndexOf("aaa", 2) == a.Type.Name.Length + 1).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE ((locate(a.`Title`, 'aaa') - 1) = -1);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE ((locate(a.`Title`, 'aaa', 3) - 1) = -1);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE ((locate(a.`Title`, 'aaa', 3) - 1) = char_length(a.`Title`) + 1);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE ((locate(a.`Title`, 'aaa', 3) - 1) = char_length(a__Type.`Name`) + 1);
			data.Add(select.Where(a => (a.Title + "aaa").IndexOf("aaa") == -1).ToList());
			data.Add(select.Where(a => (a.Title + "aaa").IndexOf("aaa", 2) == -1).ToList());
			data.Add(select.Where(a => (a.Title + "aaa").IndexOf("aaa", 2) == (a.Title.Length + 1)).ToList());
			data.Add(select.Where(a => (a.Title + "aaa").IndexOf("aaa", 2) == a.Type.Name.Length + 1).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE ((locate(concat(a.`Title`, 'aaa'), 'aaa') - 1) = -1);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE ((locate(concat(a.`Title`, 'aaa'), 'aaa', 3) - 1) = -1);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE ((locate(concat(a.`Title`, 'aaa'), 'aaa', 3) - 1) = char_length(a.`Title`) + 1);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE ((locate(concat(a.`Title`, 'aaa'), 'aaa', 3) - 1) = char_length(a__Type.`Name`) + 1)
		}
		[Fact]
		public void PadLeft() {
			var data = new List<object>();
			data.Add(select.Where(a => a.Title.PadLeft(10, 'a') == "aaa").ToList());
			data.Add(select.Where(a => a.Title.PadLeft(10, 'a') == a.Title).ToList());
			data.Add(select.Where(a => a.Title.PadLeft(10, 'a') == (a.Title + 1)).ToList());
			data.Add(select.Where(a => a.Title.PadLeft(10, 'a') == a.Type.Name).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (lpad(a.`Title`, 10, 'a') = 'aaa');

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (lpad(a.`Title`, 10, 'a') = a.`Title`);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (lpad(a.`Title`, 10, 'a') = concat(a.`Title`, 1));

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (lpad(a.`Title`, 10, 'a') = a__Type.`Name`);
			data.Add(select.Where(a => (a.Title.PadLeft(10, 'a') + "aaa").PadLeft(20, 'b') == "aaa").ToList());
			data.Add(select.Where(a => (a.Title.PadLeft(10, 'a') + "aaa").PadLeft(20, 'b') == a.Title).ToList());
			data.Add(select.Where(a => (a.Title.PadLeft(10, 'a') + "aaa").PadLeft(20, 'b') == (a.Title + 1)).ToList());
			data.Add(select.Where(a => (a.Title.PadLeft(10, 'a') + "aaa").PadLeft(20, 'b') == a.Type.Name).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (lpad(concat(lpad(a.`Title`, 10, 'a'), 'aaa'), 20, 'b') = 'aaa');

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (lpad(concat(lpad(a.`Title`, 10, 'a'), 'aaa'), 20, 'b') = a.`Title`);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (lpad(concat(lpad(a.`Title`, 10, 'a'), 'aaa'), 20, 'b') = concat(a.`Title`, 1));

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (lpad(concat(lpad(a.`Title`, 10, 'a'), 'aaa'), 20, 'b') = a__Type.`Name`)
		}
		[Fact]
		public void PadRight() {
			var data = new List<object>();
			data.Add(select.Where(a => a.Title.PadRight(10, 'a') == "aaa").ToList());
			data.Add(select.Where(a => a.Title.PadRight(10, 'a') == a.Title).ToList());
			data.Add(select.Where(a => a.Title.PadRight(10, 'a') == (a.Title + 1)).ToList());
			data.Add(select.Where(a => a.Title.PadRight(10, 'a') == a.Type.Name).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (rpad(a.`Title`, 10, 'a') = 'aaa');

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (rpad(a.`Title`, 10, 'a') = a.`Title`);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (rpad(a.`Title`, 10, 'a') = concat(a.`Title`, 1));

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (rpad(a.`Title`, 10, 'a') = a__Type.`Name`);
			data.Add(select.Where(a => (a.Title.PadRight(10, 'a') + "aaa").PadRight(20, 'b') == "aaa").ToList());
			data.Add(select.Where(a => (a.Title.PadRight(10, 'a') + "aaa").PadRight(20, 'b') == a.Title).ToList());
			data.Add(select.Where(a => (a.Title.PadRight(10, 'a') + "aaa").PadRight(20, 'b') == (a.Title + 1)).ToList());
			data.Add(select.Where(a => (a.Title.PadRight(10, 'a') + "aaa").PadRight(20, 'b') == a.Type.Name).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (rpad(concat(rpad(a.`Title`, 10, 'a'), 'aaa'), 20, 'b') = 'aaa');

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (rpad(concat(rpad(a.`Title`, 10, 'a'), 'aaa'), 20, 'b') = a.`Title`);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (rpad(concat(rpad(a.`Title`, 10, 'a'), 'aaa'), 20, 'b') = concat(a.`Title`, 1));

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (rpad(concat(rpad(a.`Title`, 10, 'a'), 'aaa'), 20, 'b') = a__Type.`Name`)
		}
		[Fact]
		public void Trim() {
			var data = new List<object>();
			data.Add(select.Where(a => a.Title.Trim() == "aaa").ToList());
			data.Add(select.Where(a => a.Title.Trim('a') == a.Title).ToList());
			data.Add(select.Where(a => a.Title.Trim('a', 'b') == (a.Title + 1)).ToList());
			data.Add(select.Where(a => a.Title.Trim('a', 'b', 'c') == a.Type.Name).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (trim(a.`Title`) = 'aaa');

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (trim('a' from a.`Title`) = a.`Title`);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (trim('b' from trim('a' from a.`Title`)) = concat(a.`Title`, 1));

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (trim('c' from trim('b' from trim('a' from a.`Title`))) = a__Type.`Name`);
			data.Add(select.Where(a => (a.Title.Trim() + "aaa").Trim() == "aaa").ToList());
			data.Add(select.Where(a => (a.Title.Trim('a') + "aaa").Trim('a') == a.Title).ToList());
			data.Add(select.Where(a => (a.Title.Trim('a', 'b') + "aaa").Trim('a', 'b') == (a.Title + 1)).ToList());
			data.Add(select.Where(a => (a.Title.Trim('a', 'b', 'c') + "aaa").Trim('a', 'b', 'c') == a.Type.Name).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (trim(concat(trim(a.`Title`), 'aaa')) = 'aaa');

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (trim('a' from concat(trim('a' from a.`Title`), 'aaa')) = a.`Title`);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (trim('b' from trim('a' from concat(trim('b' from trim('a' from a.`Title`)), 'aaa'))) = concat(a.`Title`, 1));

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (trim('c' from trim('b' from trim('a' from concat(trim('c' from trim('b' from trim('a' from a.`Title`))), 'aaa')))) = a__Type.`Name`)
		}
		[Fact]
		public void TrimStart() {
			var data = new List<object>();
			data.Add(select.Where(a => a.Title.TrimStart() == "aaa").ToList());
			data.Add(select.Where(a => a.Title.TrimStart('a') == a.Title).ToList());
			data.Add(select.Where(a => a.Title.TrimStart('a', 'b') == (a.Title + 1)).ToList());
			data.Add(select.Where(a => a.Title.TrimStart('a', 'b', 'c') == a.Type.Name).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (ltrim(a.`Title`) = 'aaa');

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (trim(trailing 'a' from trim(leading 'a' from a.`Title`)) = a.`Title`);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (trim(trailing 'b' from trim(leading 'b' from trim(trailing 'a' from trim(leading 'a' from a.`Title`)))) = concat(a.`Title`, 1));

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (trim(trailing 'c' from trim(leading 'c' from trim(trailing 'b' from trim(leading 'b' from trim(trailing 'a' from trim(leading 'a' from a.`Title`)))))) = a__Type.`Name`);
			data.Add(select.Where(a => (a.Title.TrimStart() + "aaa").TrimStart() == "aaa").ToList());
			data.Add(select.Where(a => (a.Title.TrimStart('a') + "aaa").TrimStart('a') == a.Title).ToList());
			data.Add(select.Where(a => (a.Title.TrimStart('a', 'b') + "aaa").TrimStart('a', 'b') == (a.Title + 1)).ToList());
			data.Add(select.Where(a => (a.Title.TrimStart('a', 'b', 'c') + "aaa").TrimStart('a', 'b', 'c') == a.Type.Name).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (ltrim(concat(ltrim(a.`Title`), 'aaa')) = 'aaa');

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (trim(trailing 'a' from trim(leading 'a' from concat(trim(trailing 'a' from trim(leading 'a' from a.`Title`)), 'aaa'))) = a.`Title`);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (trim(trailing 'b' from trim(leading 'b' from trim(trailing 'a' from trim(leading 'a' from concat(trim(trailing 'b' from trim(leading 'b' from trim(trailing 'a' from trim(leading 'a' from a.`Title`)))), 'aaa'))))) = concat(a.`Title`, 1));

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (trim(trailing 'c' from trim(leading 'c' from trim(trailing 'b' from trim(leading 'b' from trim(trailing 'a' from trim(leading 'a' from concat(trim(trailing 'c' from trim(leading 'c' from trim(trailing 'b' from trim(leading 'b' from trim(trailing 'a' from trim(leading 'a' from a.`Title`)))))), 'aaa'))))))) = a__Type.`Name`)
		}
		[Fact]
		public void TrimEnd() {
			var data = new List<object>();
			data.Add(select.Where(a => a.Title.TrimEnd() == "aaa").ToList());
			data.Add(select.Where(a => a.Title.TrimEnd('a') == a.Title).ToList());
			data.Add(select.Where(a => a.Title.TrimEnd('a', 'b') == (a.Title + 1)).ToList());
			data.Add(select.Where(a => a.Title.TrimEnd('a', 'b', 'c') == a.Type.Name).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (rtrim(a.`Title`) = 'aaa');

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (trim(trailing 'a' from a.`Title`) = a.`Title`);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (trim(trailing 'b' from trim(trailing 'a' from a.`Title`)) = concat(a.`Title`, 1));

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (trim(trailing 'c' from trim(trailing 'b' from trim(trailing 'a' from a.`Title`))) = a__Type.`Name`);
			data.Add(select.Where(a => (a.Title.TrimEnd() + "aaa").TrimEnd() == "aaa").ToList());
			data.Add(select.Where(a => (a.Title.TrimEnd('a') + "aaa").TrimEnd('a') == a.Title).ToList());
			data.Add(select.Where(a => (a.Title.TrimEnd('a', 'b') + "aaa").TrimEnd('a', 'b') == (a.Title + 1)).ToList());
			data.Add(select.Where(a => (a.Title.TrimEnd('a', 'b', 'c') + "aaa").TrimEnd('a', 'b', 'c') == a.Type.Name).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (rtrim(concat(rtrim(a.`Title`), 'aaa')) = 'aaa');

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (trim(trailing 'a' from concat(trim(trailing 'a' from a.`Title`), 'aaa')) = a.`Title`);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (trim(trailing 'b' from trim(trailing 'a' from concat(trim(trailing 'b' from trim(trailing 'a' from a.`Title`)), 'aaa'))) = concat(a.`Title`, 1));

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (trim(trailing 'c' from trim(trailing 'b' from trim(trailing 'a' from concat(trim(trailing 'c' from trim(trailing 'b' from trim(trailing 'a' from a.`Title`))), 'aaa')))) = a__Type.`Name`)
		}
		[Fact]
		public void Replace() {
			var data = new List<object>();
			data.Add(select.Where(a => a.Title.Replace("a", "b") == "aaa").ToList());
			data.Add(select.Where(a => a.Title.Replace("a", "b").Replace("b", "c") == a.Title).ToList());
			data.Add(select.Where(a => a.Title.Replace("a", "b").Replace("b", "c").Replace("c", "a") == (a.Title + 1)).ToList());
			data.Add(select.Where(a => a.Title.Replace("a", "b").Replace("b", "c").Replace(a.Type.Name, "a") == a.Type.Name).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (replace(a.`Title`, 'a', 'b') = 'aaa');

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (replace(replace(a.`Title`, 'a', 'b'), 'b', 'c') = a.`Title`);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (replace(replace(replace(a.`Title`, 'a', 'b'), 'b', 'c'), 'c', 'a') = concat(a.`Title`, 1));

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (replace(replace(replace(a.`Title`, 'a', 'b'), 'b', 'c'), a__Type.`Name`, 'a') = a__Type.`Name`);
			data.Add(select.Where(a => (a.Title.Replace("a", "b") + "aaa").TrimEnd() == "aaa").ToList());
			data.Add(select.Where(a => (a.Title.Replace("a", "b").Replace("b", "c") + "aaa").TrimEnd('a') == a.Title).ToList());
			data.Add(select.Where(a => (a.Title.Replace("a", "b").Replace("b", "c").Replace("c", "a") + "aaa").TrimEnd('a', 'b') == (a.Title + 1)).ToList());
			data.Add(select.Where(a => (a.Title.Replace("a", "b").Replace("b", "c").Replace(a.Type.Name, "a") + "aaa").TrimEnd('a', 'b', 'c') == a.Type.Name).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (concat(replace(a.`Title`, 'a', 'b'), 'aaa') = 'aaa');

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (concat(replace(replace(a.`Title`, 'a', 'b'), 'b', 'c'), 'aaa') = a.`Title`);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (concat(replace(replace(replace(a.`Title`, 'a', 'b'), 'b', 'c'), 'c', 'a'), 'aaa') = concat(a.`Title`, 1));

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (concat(replace(replace(replace(a.`Title`, 'a', 'b'), 'b', 'c'), a__Type.`Name`, 'a'), 'aaa') = a__Type.`Name`)
		}
		[Fact]
		public void CompareTo() {
			var data = new List<object>();
			data.Add(select.Where(a => a.Title.CompareTo(a.Title) == 0).ToList());
			data.Add(select.Where(a => a.Title.CompareTo(a.Title) > 0).ToList());
			data.Add(select.Where(a => a.Title.CompareTo(a.Title + 1) == 0).ToList());
			data.Add(select.Where(a => a.Title.CompareTo(a.Title + a.Type.Name) == 0).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (strcmp(a.`Title`, a.`Title`) = 0);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (strcmp(a.`Title`, a.`Title`) > 0);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (strcmp(a.`Title`, concat(a.`Title`, 1)) = 0);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (strcmp(a.`Title`, concat(a.`Title`, a__Type.`Name`)) = 0);
			data.Add(select.Where(a => (a.Title + "aaa").CompareTo("aaa") == 0).ToList());
			data.Add(select.Where(a => (a.Title + "aaa").CompareTo(a.Title) > 0).ToList());
			data.Add(select.Where(a => (a.Title + "aaa").CompareTo(a.Title + 1) == 0).ToList());
			data.Add(select.Where(a => (a.Title + "aaa").CompareTo(a.Type.Name) == 0).ToList());
			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (strcmp(concat(a.`Title`, 'aaa'), 'aaa') = 0);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (strcmp(concat(a.`Title`, 'aaa'), a.`Title`) > 0);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a.`Title` as4, a.`CreateTime` as5 
			//FROM `tb_topic` a 
			//WHERE (strcmp(concat(a.`Title`, 'aaa'), concat(a.`Title`, 1)) = 0);

			//SELECT a.`Id` as1, a.`Clicks` as2, a.`TestTypeInfoGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
			//FROM `tb_topic` a, `TestTypeInfo` a__Type 
			//WHERE (strcmp(concat(a.`Title`, 'aaa'), a__Type.`Name`) = 0)
		}
	}
}