From b1a1c3f487be5469a4bab0238af33d20a21f6eab Mon Sep 17 00:00:00 2001
From: sunkaixuan <610262374@qq.com>
Date: Thu, 11 May 2023 19:24:49 +0800
Subject: [PATCH] DbLink support

---
 .../SqlSugar/Abstract/QueryableProvider/QueryableHelper.cs   | 5 +++++
 Src/Asp.Net/SqlSugar/Entities/ConnectionConfig.cs            | 4 ++++
 Src/Asp.Net/SqlSugar/Utilities/UtilMethods.cs                | 1 +
 3 files changed, 10 insertions(+)

diff --git a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableHelper.cs b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableHelper.cs
index 90714210a..7f7235fe0 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableHelper.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableHelper.cs
@@ -1188,6 +1188,11 @@ namespace SqlSugar
                 tableName = this.QueryBuilder.LambdaExpressions.DbMehtods.GetTableWithDataBase
                 (this.QueryBuilder.Builder.GetTranslationColumnName(dbName), this.QueryBuilder.Builder.GetTranslationColumnName(tableName));
             }
+            var dbLinkName = this.Context.CurrentConnectionConfig.DbLinkName;
+            if (dbLinkName.HasValue()) 
+            {
+                tableName = dbLinkName+"."+this.QueryBuilder.Builder.GetTranslationColumnName(tableName);
+            }
             return tableName;
         }
         protected string AppendSelect(List<EntityColumnInfo> entityColumnInfos,string sql, ReadOnlyCollection<ParameterExpression> parameters, List<EntityColumnInfo> columnsResult, int parameterIndex1)
diff --git a/Src/Asp.Net/SqlSugar/Entities/ConnectionConfig.cs b/Src/Asp.Net/SqlSugar/Entities/ConnectionConfig.cs
index b1bbf3141..549efd813 100644
--- a/Src/Asp.Net/SqlSugar/Entities/ConnectionConfig.cs
+++ b/Src/Asp.Net/SqlSugar/Entities/ConnectionConfig.cs
@@ -23,6 +23,10 @@ namespace SqlSugar
         /// </summary>
         public string ConnectionString { get; set; }
         /// <summary>
+        /// QueryableWithAttr queries go to DbLinkName, which is commonly used for cross-library queries
+        /// </summary>
+        public string DbLinkName { get; set; }
+        /// <summary>
         /// true does not need to close the connection
         /// </summary>
         public bool IsAutoCloseConnection { get; set; }
diff --git a/Src/Asp.Net/SqlSugar/Utilities/UtilMethods.cs b/Src/Asp.Net/SqlSugar/Utilities/UtilMethods.cs
index 6f148e868..82c5bc4b0 100644
--- a/Src/Asp.Net/SqlSugar/Utilities/UtilMethods.cs
+++ b/Src/Asp.Net/SqlSugar/Utilities/UtilMethods.cs
@@ -237,6 +237,7 @@ namespace SqlSugar
                 },
                 ConnectionString = it.ConnectionString,
                 DbType = it.DbType,
+                DbLinkName= it.DbLinkName,
                 IndexSuffix = it.IndexSuffix,
                 InitKeyType = it.InitKeyType,
                 IsAutoCloseConnection = it.IsAutoCloseConnection,