Add SqlSugarClient.GetDate()

Src/Asp.Net/MySqlTest/Demos/1_Query.cs

@@ -198,6 +198,7 @@ namespace OrmTest.Demo
         public static void Easy()
         {
             var db = GetInstance();
+            var dbTime = db.GetDate();
             var getAll = db.Queryable<Student>().ToList();
             var getTop2 = db.Queryable<Student>().Take(2).ToList();//TOP2
             var getLike = db.Queryable<Student>().Where(it => it.Name.Contains("a")).ToList();

Src/Asp.Net/SqlServerTest/Demos/1_Query.cs

@@ -242,6 +242,7 @@ namespace OrmTest.Demo
         public static void Easy()
         {
             var db = GetInstance();
+            var dbTime = db.GetDate();
             var getAll = db.Queryable<Student>().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();

Src/Asp.Net/SqlSugar/Abstract/SqlBuilderProvider/SqlBuilderProvider.cs

@@ -110,6 +110,7 @@ namespace SqlSugar
         public abstract string SqlTranslationRight { get; }
         public virtual string SqlFalse { get { return "1=2 "; } }
         public virtual string SqlDateNow { get { return "GETDATE()"; } }
+        public virtual string FullSqlDateNow { get { return "SELECT GETDATE()"; } }
         public virtual string SqlSelectAll { get { return "*"; } }
         #endregion
     }

Src/Asp.Net/SqlSugar/Interface/ISqlBuilder.cs

@@ -24,6 +24,7 @@ namespace SqlSugar
         string SqlParameterKeyWord { get; }
         string SqlFalse { get; }
         string SqlDateNow { get; }
+        string FullSqlDateNow { get; }
         string SqlTranslationLeft { get; }
         string SqlTranslationRight { get; }
         string SqlSelectAll { get;  }

Src/Asp.Net/SqlSugar/Realization/MySql/SqlBuilder/MySqlBuilder.cs

@@ -8,5 +8,19 @@ namespace SqlSugar
     {
         public override string SqlTranslationLeft { get { return "`"; } }
         public override string SqlTranslationRight { get { return "`"; } }
+        public override string SqlDateNow
+        {
+            get
+            {
+                return "sysdate()";
+            }
+        }
+        public override string FullSqlDateNow
+        {
+            get
+            {
+                return "select sysdate()";
+            }
+        }
     }
 }

Src/Asp.Net/SqlSugar/Realization/Oracle/SqlBuilder/OracleBuilder.cs

@@ -23,6 +23,13 @@ namespace SqlSugar
                 return "sysdate";
             }
         }
+        public override string FullSqlDateNow
+        {
+            get
+            {
+                return "select sysdate from dual";
+            }
+        }
         public override string SqlTranslationLeft { get { return "\""; } }
         public override string SqlTranslationRight { get { return "\""; } }
         public override string GetTranslationTableName(string name)

Src/Asp.Net/SqlSugar/Realization/Sqlite/SqlBuilder/SqliteBuilder.cs

@@ -8,5 +8,19 @@ namespace SqlSugar
     {
         public override string SqlTranslationLeft { get { return "`"; } }
         public override string SqlTranslationRight { get { return "`"; } }
+        public override string SqlDateNow
+        {
+            get
+            {
+                return "DATETIME('now') ";
+            }
+        }
+        public override string FullSqlDateNow
+        {
+            get
+            {
+                return "select DATETIME('now') ";
+            }
+        }
     }
 }

Src/Asp.Net/SqlSugar/SqlSugarClient.cs

@@ -93,6 +93,14 @@ namespace SqlSugar
 
         #region Queryable
         /// <summary>
+        /// Get datebase time
+        /// </summary>
+        /// <returns></returns>
+        public DateTime GetDate() {
+            var sqlBuilder = InstanceFactory.GetSqlbuilder(this.Context.CurrentConnectionConfig);
+            return this.Ado.GetDateTime(sqlBuilder.FullSqlDateNow);
+        }
+        /// <summary>
         /// Lambda Query operation
         /// </summary>
         public virtual ISugarQueryable<T> Queryable<T>() where T : class, new()

Src/Asp.Net/SqliteTest/Demos/1_Query.cs

@@ -152,6 +152,7 @@ namespace OrmTest.Demo
         public static void Easy()
         {
             var db = GetInstance();
+            var dbTime = db.GetDate();
             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();