pgsql/mysql/sqlserver适配

FreeSql.Tests/MySql/MySqlExpressionTest.cs

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+using FreeSql.DataAnnotations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace FreeSql.Tests.MySql {
+	public class MySqlExpressionTest {
+
+		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() {
+		}
+		[Fact]
+		public void EndsWith() {
+		}
+		[Fact]
+		public void Contains() {
+		}
+		[Fact]
+		public void ToLower() {
+		}
+		[Fact]
+		public void ToUpper() {
+			
+		}
+		[Fact]
+		public void Substring() {
+		}
+		[Fact]
+		public void Length() {
+		}
+		[Fact]
+		public void IndexOf() {
+		}
+		[Fact]
+		public void PadLeft() {
+		}
+		[Fact]
+		public void PadRight() {
+		}
+		[Fact]
+		public void Trim() {
+		}
+		[Fact]
+		public void TrimStart() {
+		}
+		[Fact]
+		public void TrimEnd() {
+		}
+		[Fact]
+		public void Replace() {
+		}
+		[Fact]
+		public void CompareTo() {
+		}
+	}
+}