diff --git a/FreeSql.DbContext/DbContext/DbContextAsync.cs b/FreeSql.DbContext/DbContext/DbContextAsync.cs
index 61736375..83fab920 100644
--- a/FreeSql.DbContext/DbContext/DbContextAsync.cs
+++ b/FreeSql.DbContext/DbContext/DbContextAsync.cs
@@ -133,7 +133,11 @@ namespace FreeSql
                 if (isLiveUpdate || oldinfo.changeType == EntityChangeType.Update)
                 {
                     if (states.Any())
+                    {
                         await funcUpdate(isLiveUpdate);
+                        if (info?.changeType == EntityChangeType.Update)
+                            flagFuncUpdateLaststate = true;
+                    }
                 }
 
                 if (info != null)
diff --git a/FreeSql.DbContext/DbContext/DbContextSync.cs b/FreeSql.DbContext/DbContext/DbContextSync.cs
index 1591af90..e5aad882 100644
--- a/FreeSql.DbContext/DbContext/DbContextSync.cs
+++ b/FreeSql.DbContext/DbContext/DbContextSync.cs
@@ -148,7 +148,11 @@ namespace FreeSql
                 if (isLiveUpdate || oldinfo.changeType == EntityChangeType.Update)
                 {
                     if (states.Any())
+                    {
                         funcUpdate(isLiveUpdate);
+                        if (info?.changeType == EntityChangeType.Update)
+                            flagFuncUpdateLaststate = true;
+                    }
                 }
 
                 if (info != null)
diff --git a/FreeSql.Tests/FreeSql.Tests.DbContext/RepositoryTests.cs b/FreeSql.Tests/FreeSql.Tests.DbContext/RepositoryTests.cs
index 684d00ec..ef14b310 100644
--- a/FreeSql.Tests/FreeSql.Tests.DbContext/RepositoryTests.cs
+++ b/FreeSql.Tests/FreeSql.Tests.DbContext/RepositoryTests.cs
@@ -2,12 +2,34 @@ using FreeSql.DataAnnotations;
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Threading.Tasks;
 using Xunit;
 
 namespace FreeSql.Tests
 {
     public class RepositoryTests
     {
+        /// <summary>
+        /// 更一条无法更新。
+        /// </summary>
+        /// <returns></returns>
+        [Fact]
+        public async Task Updatemysql()
+        {
+            var item1 = new AddUpdateInfo();
+            g.mysql.Insert(item1).ExecuteAffrows();
+            var item2 = new AddUpdateInfo();
+            g.mysql.Insert(item2).ExecuteAffrows();
+            var item3 = new AddUpdateInfo();
+            g.mysql.Insert(item3).ExecuteAffrows();
+
+            var repos = g.mysql.GetGuidRepository<AddUpdateInfo>();
+            var items = repos.Select.WhereDynamic(new[] { item1, item2, item3 }).ToList();
+            items[0].Title = "88";
+            //items[1].Title = "88";
+            items[2].Title = "88";
+            int x = await repos.UpdateAsync(items);
+        }
 
         [Fact]
         public void AddUpdate()
diff --git a/FreeSql.Tests/FreeSql.Tests/PostgreSQL/PostgreSQLExpression/OtherTest.cs b/FreeSql.Tests/FreeSql.Tests/PostgreSQL/PostgreSQLExpression/OtherTest.cs
index d25aa43e..62792d53 100644
--- a/FreeSql.Tests/FreeSql.Tests/PostgreSQL/PostgreSQLExpression/OtherTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests/PostgreSQL/PostgreSQLExpression/OtherTest.cs
@@ -171,6 +171,8 @@ namespace FreeSql.Tests.PostgreSQLExpression
             var sql16 = select.Where(a => a.testFieldJArray.Count() > 0).Limit(10).ToList();
             var sql17 = select.Where(a => a.testFieldJArray.LongCount() > 0).Limit(10).ToList();
             var sql18 = select.Where(a => a.testFieldJArray.Count > 0).Limit(10).ToList();
+
+            var sql19 = select.First(a => a.testFieldJToken["a"]);
         }
 
         [Fact]
diff --git a/FreeSql/Extensions/FreeSqlGlobalExpressionCallExtensions.cs b/FreeSql/Extensions/FreeSqlGlobalExpressionCallExtensions.cs
index 1d14724f..c199da58 100644
--- a/FreeSql/Extensions/FreeSqlGlobalExpressionCallExtensions.cs
+++ b/FreeSql/Extensions/FreeSqlGlobalExpressionCallExtensions.cs
@@ -174,6 +174,26 @@ namespace FreeSql
         /// <returns></returns>
         public static ICaseWhenEnd Case() => SqlExtExtensions.Case();
         /// <summary>
+        /// case when .. then .. end
+        /// </summary>
+        /// <typeparam name="TInput"></typeparam>
+        /// <typeparam name="TOutput"></typeparam>
+        /// <param name="input"></param>
+        /// <param name="dict"></param>
+        /// <returns></returns>
+        public static TOutput CaseDict<TInput, TOutput>(TInput input, [RawValue] Dictionary<TInput, TOutput> dict)
+        {
+            var ec = expContext.Value;
+            var sb = new StringBuilder();
+            sb.Append("case");
+            foreach (var kv in dict)
+                sb.Append(" when ").Append(ec.ParsedContent["input"]).Append(" = ").Append(ec.FormatSql(kv.Key))
+                    .Append(" then ").Append(ec.FormatSql(kv.Value));
+            sb.Append(" end");
+            ec.Result = sb.ToString();
+            return default;
+        }
+        /// <summary>
         /// MySql group_concat(distinct .. order by .. separator ..)
         /// </summary>
         /// <param name="column"></param>
diff --git a/FreeSql/FreeSql.xml b/FreeSql/FreeSql.xml
index 892888fe..9c849a52 100644
--- a/FreeSql/FreeSql.xml
+++ b/FreeSql/FreeSql.xml
@@ -1232,6 +1232,16 @@
             </summary>
             <returns></returns>
         </member>
+        <member name="M:FreeSql.SqlExt.CaseDict``2(``0,System.Collections.Generic.Dictionary{``0,``1})">
+            <summary>
+            case when .. then .. end
+            </summary>
+            <typeparam name="TInput"></typeparam>
+            <typeparam name="TOutput"></typeparam>
+            <param name="input"></param>
+            <param name="dict"></param>
+            <returns></returns>
+        </member>
         <member name="M:FreeSql.SqlExt.GroupConcat(System.Object)">
             <summary>
             MySql group_concat(distinct .. order by .. separator ..)
diff --git a/Providers/FreeSql.Provider.Odbc/Oracle/OdbcOracleCodeFirst.cs b/Providers/FreeSql.Provider.Odbc/Oracle/OdbcOracleCodeFirst.cs
index 77f7d095..0c7eb91d 100644
--- a/Providers/FreeSql.Provider.Odbc/Oracle/OdbcOracleCodeFirst.cs
+++ b/Providers/FreeSql.Provider.Odbc/Oracle/OdbcOracleCodeFirst.cs
@@ -424,7 +424,7 @@ and not exists(select 1 from all_constraints where constraint_name = a.index_nam
                 dropSequence(seqname);
                 if (seqcol.Item3)
                 {
-                    var startWith = _orm.Ado.ExecuteScalar(CommandType.Text, _commonUtils.FormatSql(" select 1 from all_tab_columns where owner={0} and table_name={1} and column_name={2}", tbname[0], tbname[1], colname2)) == null ? 1 :
+                    var startWith = _orm.Ado.ExecuteScalar(CommandType.Text, _commonUtils.FormatSql(" select 1 from all_tab_columns where owner={0} and table_name={1} and column_name={2}", tbname[0], tbname[1], seqcol.Item1.Attribute.Name)) == null ? 1 :
                         _orm.Ado.ExecuteScalar(CommandType.Text, $" select nvl(max({colname2})+1,1) from {tbname2}");
                     sb.Append("execute immediate 'CREATE SEQUENCE ").Append(_commonUtils.QuoteSqlName(seqname)).Append(" start with ").Append(startWith).Append("';\r\n");
                     sb.Append("execute immediate 'CREATE OR REPLACE TRIGGER ").Append(_commonUtils.QuoteSqlName(tiggerName))