Update Join

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

@@ -48,6 +48,12 @@ namespace SqlSugar
 
         public ISugarQueryable<T, T2> LeftJoin<T2>(ISugarQueryable<T2> joinQueryable, Expression<Func<T, T2, bool>> joinExpression)
         {
+
+            if (MasterHasWhereFirstJoin())
+            {
+                return this.MergeTable().LeftJoin<T2>(joinExpression);
+            }
+
             this.Context.InitMappingInfo<T2>();
             var result = InstanceFactory.GetQueryable<T, T2>(this.Context.CurrentConnectionConfig);
             result.SqlBuilder = this.SqlBuilder;
@@ -65,6 +71,11 @@ namespace SqlSugar
         }
         public ISugarQueryable<T, T2> InnerJoin<T2>(ISugarQueryable<T2> joinQueryable, Expression<Func<T, T2, bool>> joinExpression)
         {
+            if (MasterHasWhereFirstJoin())
+            {
+                return this.MergeTable().InnerJoin<T2>(joinExpression);
+            }
+
             this.Context.InitMappingInfo<T2>();
             var result = InstanceFactory.GetQueryable<T, T2>(this.Context.CurrentConnectionConfig);
             result.SqlBuilder = this.SqlBuilder;
@@ -82,6 +93,12 @@ namespace SqlSugar
         }
         public ISugarQueryable<T, T2> RightJoin<T2>(ISugarQueryable<T2> joinQueryable, Expression<Func<T, T2, bool>> joinExpression)
         {
+
+            if (MasterHasWhereFirstJoin())
+            {
+                return this.MergeTable().RightJoin<T2>(joinExpression);
+            }
+
             this.Context.InitMappingInfo<T2>();
             var result = InstanceFactory.GetQueryable<T, T2>(this.Context.CurrentConnectionConfig);
             result.SqlBuilder = this.SqlBuilder;
@@ -99,6 +116,12 @@ namespace SqlSugar
         }
         public ISugarQueryable<T, T2> FullJoin<T2>(ISugarQueryable<T2> joinQueryable, Expression<Func<T, T2, bool>> joinExpression) 
         {
+
+            if (MasterHasWhereFirstJoin())
+            {
+                return this.MergeTable().FullJoin<T2>(joinExpression);
+            }
+
             this.Context.InitMappingInfo<T2>();
             var result = InstanceFactory.GetQueryable<T, T2>(this.Context.CurrentConnectionConfig);
             result.SqlBuilder = this.SqlBuilder;
@@ -116,6 +139,11 @@ namespace SqlSugar
         }
         public ISugarQueryable<T, T2> LeftJoin<T2>(Expression<Func<T, T2, bool>> joinExpression)
         {
+            if (MasterHasWhereFirstJoin())
+            {
+                return this.MergeTable().LeftJoin<T2>(joinExpression);
+            }
+
             this.Context.InitMappingInfo<T2>();
             var result = InstanceFactory.GetQueryable<T, T2>(this.Context.CurrentConnectionConfig);
             result.SqlBuilder = this.SqlBuilder;