- 增加 PostgreSQL 特有功能 On Conflict Do Update 功能；

Providers/FreeSql.Provider.PostgreSQL/PostgreSQLExtensions.cs

@@ -1,4 +1,9 @@
-public static partial class FreeSqlPostgreSQLGlobalExtensions
+using FreeSql;
+using FreeSql.PostgreSQL.Curd;
+using System;
+using System.Linq.Expressions;
+
+public static partial class FreeSqlPostgreSQLGlobalExtensions
 {
 
     /// <summary>
@@ -9,4 +14,14 @@
     /// <returns></returns>
     public static string FormatPostgreSQL(this string that, params object[] args) => _postgresqlAdo.Addslashes(that, args);
     static FreeSql.PostgreSQL.PostgreSQLAdo _postgresqlAdo = new FreeSql.PostgreSQL.PostgreSQLAdo();
+
+    /// <summary>
+    /// PostgreSQL9.5+ 特有的功能，On Conflict Do Update<para></para>
+    /// 注意：此功能会开启插入【自增列】
+    /// </summary>
+    /// <typeparam name="T1"></typeparam>
+    /// <param name="that"></param>
+    /// <param name="columns">默认是以主键作为重复判断，也可以指定其他列：a => a.Name | a => new{a.Name,a.Time} | a => new[]{"name","time"}</param>
+    /// <returns></returns>
+    public static OnConflictDoUpdate<T1> OnConflictDoUpdate<T1>(this IInsert<T1> that, Expression<Func<T1, object>> columns = null) where T1 : class => new FreeSql.PostgreSQL.Curd.OnConflictDoUpdate<T1>(that.InsertIdentity(), columns);
 }