From c75cdc51ae18a1fe62c107bb841d17b6c2de0d8b Mon Sep 17 00:00:00 2001
From: 28810 <28810@YEXIANGQIN>
Date: Thu, 3 Sep 2020 18:22:06 +0800
Subject: [PATCH] =?UTF-8?q?-=20=E5=A2=9E=E5=8A=A0=20=20ISelect`2-10=20Orde?=
 =?UTF-8?q?rByIf=20=E6=96=B9=E6=B3=95=20#446=EF=BC=9B?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 FreeSql.Tests/FreeSql.Tests/UnitTest3.cs                   | 2 ++
 FreeSql/Interface/Curd/ISelect/ISelect10.cs                | 1 +
 FreeSql/Interface/Curd/ISelect/ISelect2.cs                 | 1 +
 FreeSql/Interface/Curd/ISelect/ISelect3.cs                 | 1 +
 FreeSql/Interface/Curd/ISelect/ISelect4.cs                 | 1 +
 FreeSql/Interface/Curd/ISelect/ISelect5.cs                 | 1 +
 FreeSql/Interface/Curd/ISelect/ISelect6.cs                 | 1 +
 FreeSql/Interface/Curd/ISelect/ISelect7.cs                 | 1 +
 FreeSql/Interface/Curd/ISelect/ISelect8.cs                 | 1 +
 FreeSql/Interface/Curd/ISelect/ISelect9.cs                 | 1 +
 .../CommonProvider/SelectProvider/Select10Provider.cs      | 7 +++++++
 .../CommonProvider/SelectProvider/Select2Provider.cs       | 7 +++++++
 .../CommonProvider/SelectProvider/Select3Provider.cs       | 7 +++++++
 .../CommonProvider/SelectProvider/Select4Provider.cs       | 7 +++++++
 .../CommonProvider/SelectProvider/Select5Provider.cs       | 7 +++++++
 .../CommonProvider/SelectProvider/Select6Provider.cs       | 7 +++++++
 .../CommonProvider/SelectProvider/Select7Provider.cs       | 7 +++++++
 .../CommonProvider/SelectProvider/Select8Provider.cs       | 7 +++++++
 .../CommonProvider/SelectProvider/Select9Provider.cs       | 7 +++++++
 19 files changed, 74 insertions(+)

diff --git a/FreeSql.Tests/FreeSql.Tests/UnitTest3.cs b/FreeSql.Tests/FreeSql.Tests/UnitTest3.cs
index dcfab4da..eccdba92 100644
--- a/FreeSql.Tests/FreeSql.Tests/UnitTest3.cs
+++ b/FreeSql.Tests/FreeSql.Tests/UnitTest3.cs
@@ -231,6 +231,8 @@ namespace FreeSql.Tests
                     Id = a.Key, 
                     EdiId1 = SqlExt.Max(a.Key).Over().PartitionBy(new { a.Value.EdiId, a.Value.Id }).OrderByDescending(new { a.Value.EdiId, a.Value.Id }).ToValue(),
                     EdiId2 = SqlExt.Max(a.Key).Over().PartitionBy(a.Value.EdiId).OrderByDescending(a.Value.Id).ToValue(),
+
+                    Sub1 = g.sqlite.Select<Edi>().Where(b => b.Id == a.Key).Count()
                 });
 
             var sqlextGroupConcat = g.mysql.Select<Edi, EdiItem>()
diff --git a/FreeSql/Interface/Curd/ISelect/ISelect10.cs b/FreeSql/Interface/Curd/ISelect/ISelect10.cs
index 2d1107e4..1acf96da 100644
--- a/FreeSql/Interface/Curd/ISelect/ISelect10.cs
+++ b/FreeSql/Interface/Curd/ISelect/ISelect10.cs
@@ -56,6 +56,7 @@ namespace FreeSql
 
         ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> OrderBy<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, TMember>> column);
         ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> OrderByDescending<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, TMember>> column);
+        ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> OrderByIf<TMember>(bool condition, Expression < Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, TMember>> column, bool descending = false);
 
         ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> WithSql(string sqlT1, string sqlT2, string sqlT3, string sqlT4, string sqlT5, string sqlT6, string sqlT7, string sqlT8, string sqlT9, string sqlT10, object parms = null);
     }
diff --git a/FreeSql/Interface/Curd/ISelect/ISelect2.cs b/FreeSql/Interface/Curd/ISelect/ISelect2.cs
index b7890fec..6bcdaac6 100644
--- a/FreeSql/Interface/Curd/ISelect/ISelect2.cs
+++ b/FreeSql/Interface/Curd/ISelect/ISelect2.cs
@@ -56,6 +56,7 @@ namespace FreeSql
 
         ISelect<T1, T2> OrderBy<TMember>(Expression<Func<T1, T2, TMember>> column);
         ISelect<T1, T2> OrderByDescending<TMember>(Expression<Func<T1, T2, TMember>> column);
+        ISelect<T1, T2> OrderByIf<TMember>(bool condition, Expression<Func<T1, T2, TMember>> column, bool descending = false);
 
         ISelect<T1, T2> WithSql(string sqlT1, string sqlT2, object parms = null);
     }
diff --git a/FreeSql/Interface/Curd/ISelect/ISelect3.cs b/FreeSql/Interface/Curd/ISelect/ISelect3.cs
index 413bbe72..ea441d28 100644
--- a/FreeSql/Interface/Curd/ISelect/ISelect3.cs
+++ b/FreeSql/Interface/Curd/ISelect/ISelect3.cs
@@ -56,6 +56,7 @@ namespace FreeSql
 
         ISelect<T1, T2, T3> OrderBy<TMember>(Expression<Func<T1, T2, T3, TMember>> column);
         ISelect<T1, T2, T3> OrderByDescending<TMember>(Expression<Func<T1, T2, T3, TMember>> column);
+        ISelect<T1, T2, T3> OrderByIf<TMember>(bool condition, Expression<Func<T1, T2, T3, TMember>> column, bool descending = false);
 
         ISelect<T1, T2, T3> WithSql(string sqlT1, string sqlT2, string sqlT3, object parms = null);
     }
diff --git a/FreeSql/Interface/Curd/ISelect/ISelect4.cs b/FreeSql/Interface/Curd/ISelect/ISelect4.cs
index cfd3b6ac..28e2c5f1 100644
--- a/FreeSql/Interface/Curd/ISelect/ISelect4.cs
+++ b/FreeSql/Interface/Curd/ISelect/ISelect4.cs
@@ -56,6 +56,7 @@ namespace FreeSql
 
         ISelect<T1, T2, T3, T4> OrderBy<TMember>(Expression<Func<T1, T2, T3, T4, TMember>> column);
         ISelect<T1, T2, T3, T4> OrderByDescending<TMember>(Expression<Func<T1, T2, T3, T4, TMember>> column);
+        ISelect<T1, T2, T3, T4> OrderByIf<TMember>(bool condition, Expression<Func<T1, T2, T3, T4, TMember>> column, bool descending = false);
 
         ISelect<T1, T2, T3, T4> WithSql(string sqlT1, string sqlT2, string sqlT3, string sqlT4, object parms = null);
     }
diff --git a/FreeSql/Interface/Curd/ISelect/ISelect5.cs b/FreeSql/Interface/Curd/ISelect/ISelect5.cs
index b26c016d..d1947791 100644
--- a/FreeSql/Interface/Curd/ISelect/ISelect5.cs
+++ b/FreeSql/Interface/Curd/ISelect/ISelect5.cs
@@ -56,6 +56,7 @@ namespace FreeSql
 
         ISelect<T1, T2, T3, T4, T5> OrderBy<TMember>(Expression<Func<T1, T2, T3, T4, T5, TMember>> column);
         ISelect<T1, T2, T3, T4, T5> OrderByDescending<TMember>(Expression<Func<T1, T2, T3, T4, T5, TMember>> column);
+        ISelect<T1, T2, T3, T4, T5> OrderByIf<TMember>(bool condition, Expression<Func<T1, T2, T3, T4, T5, TMember>> column, bool descending = false);
 
         ISelect<T1, T2, T3, T4, T5> WithSql(string sqlT1, string sqlT2, string sqlT3, string sqlT4, string sqlT5, object parms = null);
     }
diff --git a/FreeSql/Interface/Curd/ISelect/ISelect6.cs b/FreeSql/Interface/Curd/ISelect/ISelect6.cs
index e3c46a93..700cdf03 100644
--- a/FreeSql/Interface/Curd/ISelect/ISelect6.cs
+++ b/FreeSql/Interface/Curd/ISelect/ISelect6.cs
@@ -56,6 +56,7 @@ namespace FreeSql
 
         ISelect<T1, T2, T3, T4, T5, T6> OrderBy<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, TMember>> column);
         ISelect<T1, T2, T3, T4, T5, T6> OrderByDescending<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, TMember>> column);
+        ISelect<T1, T2, T3, T4, T5, T6> OrderByIf<TMember>(bool condition, Expression<Func<T1, T2, T3, T4, T5, T6, TMember>> column, bool descending = false);
 
         ISelect<T1, T2, T3, T4, T5, T6> WithSql(string sqlT1, string sqlT2, string sqlT3, string sqlT4, string sqlT5, string sqlT6, object parms = null);
     }
diff --git a/FreeSql/Interface/Curd/ISelect/ISelect7.cs b/FreeSql/Interface/Curd/ISelect/ISelect7.cs
index 23fd0fbc..d7117d0c 100644
--- a/FreeSql/Interface/Curd/ISelect/ISelect7.cs
+++ b/FreeSql/Interface/Curd/ISelect/ISelect7.cs
@@ -56,6 +56,7 @@ namespace FreeSql
 
         ISelect<T1, T2, T3, T4, T5, T6, T7> OrderBy<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, TMember>> column);
         ISelect<T1, T2, T3, T4, T5, T6, T7> OrderByDescending<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, TMember>> column);
+        ISelect<T1, T2, T3, T4, T5, T6, T7> OrderByIf<TMember>(bool condition, Expression<Func<T1, T2, T3, T4, T5, T6, T7, TMember>> column, bool descending = false);
 
         ISelect<T1, T2, T3, T4, T5, T6, T7> WithSql(string sqlT1, string sqlT2, string sqlT3, string sqlT4, string sqlT5, string sqlT6, string sqlT7, object parms = null);
     }
diff --git a/FreeSql/Interface/Curd/ISelect/ISelect8.cs b/FreeSql/Interface/Curd/ISelect/ISelect8.cs
index 22e2b933..8ed0514a 100644
--- a/FreeSql/Interface/Curd/ISelect/ISelect8.cs
+++ b/FreeSql/Interface/Curd/ISelect/ISelect8.cs
@@ -56,6 +56,7 @@ namespace FreeSql
 
         ISelect<T1, T2, T3, T4, T5, T6, T7, T8> OrderBy<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, TMember>> column);
         ISelect<T1, T2, T3, T4, T5, T6, T7, T8> OrderByDescending<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, TMember>> column);
+        ISelect<T1, T2, T3, T4, T5, T6, T7, T8> OrderByIf<TMember>(bool condition, Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, TMember>> column, bool descending = false);
 
         ISelect<T1, T2, T3, T4, T5, T6, T7, T8> WithSql(string sqlT1, string sqlT2, string sqlT3, string sqlT4, string sqlT5, string sqlT6, string sqlT7, string sqlT8, object parms = null);
     }
diff --git a/FreeSql/Interface/Curd/ISelect/ISelect9.cs b/FreeSql/Interface/Curd/ISelect/ISelect9.cs
index 87463c8e..96da6b7a 100644
--- a/FreeSql/Interface/Curd/ISelect/ISelect9.cs
+++ b/FreeSql/Interface/Curd/ISelect/ISelect9.cs
@@ -56,6 +56,7 @@ namespace FreeSql
 
         ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9> OrderBy<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TMember>> column);
         ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9> OrderByDescending<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TMember>> column);
+        ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9> OrderByIf<TMember>(bool condition, Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TMember>> column, bool descending = false);
 
         ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9> WithSql(string sqlT1, string sqlT2, string sqlT3, string sqlT4, string sqlT5, string sqlT6, string sqlT7, string sqlT8, string sqlT9, object parms = null);
     }
diff --git a/FreeSql/Internal/CommonProvider/SelectProvider/Select10Provider.cs b/FreeSql/Internal/CommonProvider/SelectProvider/Select10Provider.cs
index cfbdf04e..4058a933 100644
--- a/FreeSql/Internal/CommonProvider/SelectProvider/Select10Provider.cs
+++ b/FreeSql/Internal/CommonProvider/SelectProvider/Select10Provider.cs
@@ -98,6 +98,13 @@ namespace FreeSql.Internal.CommonProvider
             return this.InternalOrderByDescending(column?.Body);
         }
 
+        ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>.OrderByIf<TMember>(bool condition, Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, TMember>> column, bool descending)
+        {
+            if (condition == false || column == null) this.InternalOrderBy(column?.Body);
+            for (var a = 0; a < column.Parameters.Count; a++) _tables[a].Parameter = column.Parameters[a];
+            return descending ? this.InternalOrderByDescending(column?.Body) : this.InternalOrderBy(column?.Body);
+        }
+
         decimal ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>.Sum<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, TMember>> column)
         {
             if (column == null) this.InternalOrderBy(column?.Body);
diff --git a/FreeSql/Internal/CommonProvider/SelectProvider/Select2Provider.cs b/FreeSql/Internal/CommonProvider/SelectProvider/Select2Provider.cs
index 722e98ad..b6617bc4 100644
--- a/FreeSql/Internal/CommonProvider/SelectProvider/Select2Provider.cs
+++ b/FreeSql/Internal/CommonProvider/SelectProvider/Select2Provider.cs
@@ -74,6 +74,13 @@ namespace FreeSql.Internal.CommonProvider
             return this.InternalOrderByDescending(column?.Body);
         }
 
+        ISelect<T1, T2> ISelect<T1, T2>.OrderByIf<TMember>(bool condition, Expression<Func<T1, T2, TMember>> column, bool descending)
+        {
+            if (condition == false || column == null) this.InternalOrderBy(column?.Body);
+            for (var a = 0; a < column.Parameters.Count; a++) _tables[a].Parameter = column.Parameters[a];
+            return descending ? this.InternalOrderByDescending(column?.Body) : this.InternalOrderBy(column?.Body);
+        }
+
         decimal ISelect<T1, T2>.Sum<TMember>(Expression<Func<T1, T2, TMember>> column)
         {
             if (column == null) this.InternalOrderBy(column?.Body);
diff --git a/FreeSql/Internal/CommonProvider/SelectProvider/Select3Provider.cs b/FreeSql/Internal/CommonProvider/SelectProvider/Select3Provider.cs
index a1a0482f..502b1e04 100644
--- a/FreeSql/Internal/CommonProvider/SelectProvider/Select3Provider.cs
+++ b/FreeSql/Internal/CommonProvider/SelectProvider/Select3Provider.cs
@@ -77,6 +77,13 @@ namespace FreeSql.Internal.CommonProvider
             return this.InternalOrderByDescending(column?.Body);
         }
 
+        ISelect<T1, T2, T3> ISelect<T1, T2, T3>.OrderByIf<TMember>(bool condition, Expression<Func<T1, T2, T3, TMember>> column, bool descending)
+        {
+            if (condition == false || column == null) this.InternalOrderBy(column?.Body);
+            for (var a = 0; a < column.Parameters.Count; a++) _tables[a].Parameter = column.Parameters[a];
+            return descending ? this.InternalOrderByDescending(column?.Body) : this.InternalOrderBy(column?.Body);
+        }
+
         decimal ISelect<T1, T2, T3>.Sum<TMember>(Expression<Func<T1, T2, T3, TMember>> column)
         {
             if (column == null) this.InternalOrderBy(column?.Body);
diff --git a/FreeSql/Internal/CommonProvider/SelectProvider/Select4Provider.cs b/FreeSql/Internal/CommonProvider/SelectProvider/Select4Provider.cs
index 7ad1d657..c7f86211 100644
--- a/FreeSql/Internal/CommonProvider/SelectProvider/Select4Provider.cs
+++ b/FreeSql/Internal/CommonProvider/SelectProvider/Select4Provider.cs
@@ -80,6 +80,13 @@ namespace FreeSql.Internal.CommonProvider
             return this.InternalOrderByDescending(column?.Body);
         }
 
+        ISelect<T1, T2, T3, T4> ISelect<T1, T2, T3, T4>.OrderByIf<TMember>(bool condition, Expression<Func<T1, T2, T3, T4, TMember>> column, bool descending)
+        {
+            if (condition == false || column == null) this.InternalOrderBy(column?.Body);
+            for (var a = 0; a < column.Parameters.Count; a++) _tables[a].Parameter = column.Parameters[a];
+            return descending ? this.InternalOrderByDescending(column?.Body) : this.InternalOrderBy(column?.Body);
+        }
+
         decimal ISelect<T1, T2, T3, T4>.Sum<TMember>(Expression<Func<T1, T2, T3, T4, TMember>> column)
         {
             if (column == null) this.InternalOrderBy(column?.Body);
diff --git a/FreeSql/Internal/CommonProvider/SelectProvider/Select5Provider.cs b/FreeSql/Internal/CommonProvider/SelectProvider/Select5Provider.cs
index 8d370dca..1624a6ed 100644
--- a/FreeSql/Internal/CommonProvider/SelectProvider/Select5Provider.cs
+++ b/FreeSql/Internal/CommonProvider/SelectProvider/Select5Provider.cs
@@ -83,6 +83,13 @@ namespace FreeSql.Internal.CommonProvider
             return this.InternalOrderByDescending(column?.Body);
         }
 
+        ISelect<T1, T2, T3, T4, T5> ISelect<T1, T2, T3, T4, T5>.OrderByIf<TMember>(bool condition, Expression<Func<T1, T2, T3, T4, T5, TMember>> column, bool descending)
+        {
+            if (condition == false || column == null) this.InternalOrderBy(column?.Body);
+            for (var a = 0; a < column.Parameters.Count; a++) _tables[a].Parameter = column.Parameters[a];
+            return descending ? this.InternalOrderByDescending(column?.Body) : this.InternalOrderBy(column?.Body);
+        }
+
         decimal ISelect<T1, T2, T3, T4, T5>.Sum<TMember>(Expression<Func<T1, T2, T3, T4, T5, TMember>> column)
         {
             if (column == null) this.InternalOrderBy(column?.Body);
diff --git a/FreeSql/Internal/CommonProvider/SelectProvider/Select6Provider.cs b/FreeSql/Internal/CommonProvider/SelectProvider/Select6Provider.cs
index 24017074..c63eba00 100644
--- a/FreeSql/Internal/CommonProvider/SelectProvider/Select6Provider.cs
+++ b/FreeSql/Internal/CommonProvider/SelectProvider/Select6Provider.cs
@@ -86,6 +86,13 @@ namespace FreeSql.Internal.CommonProvider
             return this.InternalOrderByDescending(column?.Body);
         }
 
+        ISelect<T1, T2, T3, T4, T5, T6> ISelect<T1, T2, T3, T4, T5, T6>.OrderByIf<TMember>(bool condition, Expression<Func<T1, T2, T3, T4, T5, T6, TMember>> column, bool descending)
+        {
+            if (condition == false || column == null) this.InternalOrderBy(column?.Body);
+            for (var a = 0; a < column.Parameters.Count; a++) _tables[a].Parameter = column.Parameters[a];
+            return descending ? this.InternalOrderByDescending(column?.Body) : this.InternalOrderBy(column?.Body);
+        }
+
         decimal ISelect<T1, T2, T3, T4, T5, T6>.Sum<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, TMember>> column)
         {
             if (column == null) this.InternalOrderBy(column?.Body);
diff --git a/FreeSql/Internal/CommonProvider/SelectProvider/Select7Provider.cs b/FreeSql/Internal/CommonProvider/SelectProvider/Select7Provider.cs
index be823cc8..1a583037 100644
--- a/FreeSql/Internal/CommonProvider/SelectProvider/Select7Provider.cs
+++ b/FreeSql/Internal/CommonProvider/SelectProvider/Select7Provider.cs
@@ -89,6 +89,13 @@ namespace FreeSql.Internal.CommonProvider
             return this.InternalOrderByDescending(column?.Body);
         }
 
+        ISelect<T1, T2, T3, T4, T5, T6, T7> ISelect<T1, T2, T3, T4, T5, T6, T7>.OrderByIf<TMember>(bool condition, Expression<Func<T1, T2, T3, T4, T5, T6, T7, TMember>> column, bool descending)
+        {
+            if (condition == false || column == null) this.InternalOrderBy(column?.Body);
+            for (var a = 0; a < column.Parameters.Count; a++) _tables[a].Parameter = column.Parameters[a];
+            return descending ? this.InternalOrderByDescending(column?.Body) : this.InternalOrderBy(column?.Body);
+        }
+
         decimal ISelect<T1, T2, T3, T4, T5, T6, T7>.Sum<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, TMember>> column)
         {
             if (column == null) this.InternalOrderBy(column?.Body);
diff --git a/FreeSql/Internal/CommonProvider/SelectProvider/Select8Provider.cs b/FreeSql/Internal/CommonProvider/SelectProvider/Select8Provider.cs
index 4f24a463..35f87674 100644
--- a/FreeSql/Internal/CommonProvider/SelectProvider/Select8Provider.cs
+++ b/FreeSql/Internal/CommonProvider/SelectProvider/Select8Provider.cs
@@ -92,6 +92,13 @@ namespace FreeSql.Internal.CommonProvider
             return this.InternalOrderByDescending(column?.Body);
         }
 
+        ISelect<T1, T2, T3, T4, T5, T6, T7, T8> ISelect<T1, T2, T3, T4, T5, T6, T7, T8>.OrderByIf<TMember>(bool condition, Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, TMember>> column, bool descending)
+        {
+            if (condition == false || column == null) this.InternalOrderBy(column?.Body);
+            for (var a = 0; a < column.Parameters.Count; a++) _tables[a].Parameter = column.Parameters[a];
+            return descending ? this.InternalOrderByDescending(column?.Body) : this.InternalOrderBy(column?.Body);
+        }
+
         decimal ISelect<T1, T2, T3, T4, T5, T6, T7, T8>.Sum<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, TMember>> column)
         {
             if (column == null) this.InternalOrderBy(column?.Body);
diff --git a/FreeSql/Internal/CommonProvider/SelectProvider/Select9Provider.cs b/FreeSql/Internal/CommonProvider/SelectProvider/Select9Provider.cs
index 33625d93..7f3d0505 100644
--- a/FreeSql/Internal/CommonProvider/SelectProvider/Select9Provider.cs
+++ b/FreeSql/Internal/CommonProvider/SelectProvider/Select9Provider.cs
@@ -95,6 +95,13 @@ namespace FreeSql.Internal.CommonProvider
             return this.InternalOrderByDescending(column?.Body);
         }
 
+        ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9> ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9>.OrderByIf<TMember>(bool condition, Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TMember>> column, bool descending)
+        {
+            if (condition == false || column == null) this.InternalOrderBy(column?.Body);
+            for (var a = 0; a < column.Parameters.Count; a++) _tables[a].Parameter = column.Parameters[a];
+            return descending ? this.InternalOrderByDescending(column?.Body) : this.InternalOrderBy(column?.Body);
+        }
+
         decimal ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9>.Sum<TMember>(Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TMember>> column)
         {
             if (column == null) this.InternalOrderBy(column?.Body);