- 修复 postgresql 12 移除 pg_attrdef.adsrc 列，导致 CodeFirst 方法失败的 bug；

- 增加 Aop.ConfigEntity 属性 ModifyIndexResult 现实 IndexAttribute 的设置；

Providers/FreeSql.Provider.PostgreSQL/PostgreSQLCodeFirst.cs

@@ -207,7 +207,8 @@ t.typname,
 case when a.atttypmod > 0 and a.atttypmod < 32767 then a.atttypmod - 4 else a.attlen end len,
 case when t.typelem > 0 and t.typinput::varchar = 'array_in' then t2.typname else t.typname end,
 case when a.attnotnull then '0' else '1' end as is_nullable,
-e.adsrc,
+coalesce((select 1 from pg_sequences where sequencename = {0} || '_' || {1} || '_' || a.attname || '_sequence_name' limit 1),0) is_identity,
+--e.adsrc,
 a.attndims,
 d.description as comment
 from pg_class c
@@ -243,7 +244,7 @@ where ns.nspname = {0} and c.relname = {1}", tboldname ?? tbname);
                         sqlType = string.Concat(sqlType),
                         max_length = long.Parse(string.Concat(a[2])),
                         is_nullable = string.Concat(a[4]) == "1",
-                        is_identity = string.Concat(a[5]).StartsWith(@"nextval('") && string.Concat(a[5]).EndsWith(@"'::regclass)"),
+                        is_identity = string.Concat(a[5]) == "1", //string.Concat(a[5]).StartsWith(@"nextval('") && string.Concat(a[5]).EndsWith(@"'::regclass)"),
                         attndims,
                         comment = string.Concat(a[7])
                     };