diff --git a/FreeSql.DbContext/FreeSql.DbContext.xml b/FreeSql.DbContext/FreeSql.DbContext.xml
index a7a94fcda..c941a15d9 100644
--- a/FreeSql.DbContext/FreeSql.DbContext.xml
+++ b/FreeSql.DbContext/FreeSql.DbContext.xml
@@ -758,5 +758,13 @@
             <param name="that"></param>
             <returns></returns>
         </member>
+        <member name="M:Microsoft.Extensions.DependencyInjection.FreeSqlRepositoryDependencyInjection.AddFreeRepository(Microsoft.Extensions.DependencyInjection.IServiceCollection,System.Reflection.Assembly[])">
+            <summary>
+            批量注入 Repository，可以参考代码自行调整
+            </summary>
+            <param name="services"></param>
+            <param name="assemblies"></param>
+            <returns></returns>
+        </member>
     </members>
 </doc>
diff --git a/FreeSql/Internal/UtilsExpressionTree.cs b/FreeSql/Internal/UtilsExpressionTree.cs
index ca9726454..b202543c8 100644
--- a/FreeSql/Internal/UtilsExpressionTree.cs
+++ b/FreeSql/Internal/UtilsExpressionTree.cs
@@ -16,6 +16,7 @@ using System.Numerics;
 using System.Reflection;
 using System.Text;
 using System.Text.RegularExpressions;
+using static System.Runtime.CompilerServices.RuntimeHelpers;
 
 namespace FreeSql.Internal
 {
@@ -1003,6 +1004,7 @@ namespace FreeSql.Internal
                     var midTypePropsTrytb = tbmid.Properties.Where(a => a.Value.PropertyType == trytb.Type).FirstOrDefault().Value;
                     //g.mysql.Select<Tag>().Where(a => g.mysql.Select<Song_tag>().Where(b => b.Tag_id == a.Id && b.Song_id == 1).Any());
                     var lmbdWhere = isLazy ? new StringBuilder() : null;
+                    var minPkCols = new List<ColumnInfo>();
 
                     if (pnvAttr?.ManyToMany != null)
                     {
@@ -1039,6 +1041,8 @@ namespace FreeSql.Internal
                                 if (tbmid.Primarys.Any() == false)
                                     foreach (var c in trytbTf.Columns)
                                         tbmid.ColumnsByCs[c.CsName].Attribute.IsPrimary = true;
+                                else
+                                    minPkCols.AddRange(trytbTf.Columns);
 
                                 if (isLazy)
                                 {
@@ -1086,6 +1090,8 @@ namespace FreeSql.Internal
                                     if (tbmid.Primarys.Any() == false)
                                         foreach (var c in tbrefTf.Columns)
                                             tbmid.ColumnsByCs[c.CsName].Attribute.IsPrimary = true;
+                                    else
+                                        minPkCols.AddRange(tbrefTf.Columns);
 
                                     if (isLazy)
                                     {
@@ -1129,6 +1135,8 @@ namespace FreeSql.Internal
                             nvref.MiddleColumns.Add(trycol);
                             if (tbmid.Primarys.Any() == false)
                                 trycol.Attribute.IsPrimary = true;
+                            else
+                                minPkCols.Add(trycol);
 
                             if (isLazy)
                             {
@@ -1169,6 +1177,8 @@ namespace FreeSql.Internal
                                 nvref.MiddleColumns.Add(trycol);
                                 if (tbmid.Primarys.Any() == false)
                                     trycol.Attribute.IsPrimary = true;
+                                else
+                                    minPkCols.Add(trycol);
 
                                 if (isLazy) lmbdWhere.Append(" && b.").Append(trycol.CsName).Append(" == a.").Append(tbref.Primarys[a].CsName);
                             }
@@ -1197,6 +1207,11 @@ namespace FreeSql.Internal
                                 }
                             }
                         }
+                        else if(minPkCols.Any(c => tbmid.ColumnsByCs[c.CsName].Attribute.IsPrimary == false)) 
+                        {
+                            nvref.Exception = new Exception($"导航属性 {trytbTypeName}.{pnv.Name} 解析错误，中间类主键错误：{midType.Name}({string.Join(",", tbmid.Primarys.Select(a => a.CsName))}) 与两边不匹配");
+                            trytb.AddOrUpdateTableRef(pnv.Name, nvref);
+                        }
                     }
 
                     if (isLazy)
diff --git a/Providers/FreeSql.Provider.Custom/PostgreSQL/CustomPostgreSQLCodeFirst.cs b/Providers/FreeSql.Provider.Custom/PostgreSQL/CustomPostgreSQLCodeFirst.cs
index bb5a77f26..2cc8b5e73 100644
--- a/Providers/FreeSql.Provider.Custom/PostgreSQL/CustomPostgreSQLCodeFirst.cs
+++ b/Providers/FreeSql.Provider.Custom/PostgreSQL/CustomPostgreSQLCodeFirst.cs
@@ -32,7 +32,7 @@ namespace FreeSql.Custom.PostgreSQL
                 { typeof(decimal).FullName, CsToDb.New(DbType.Decimal, "numeric", "numeric(10,2) NOT NULL", false, false, 0) },{ typeof(decimal?).FullName, CsToDb.New(DbType.Decimal, "numeric", "numeric(10,2)", false, true, null) },
 
                 { typeof(string).FullName, CsToDb.New(DbType.String, "varchar", "varchar(255)", false, null, "") },
-                { typeof(char).FullName, CsToDb.New(DbType.AnsiString, "char", "char(1) NULL", false, null, '\0') },
+                { typeof(char).FullName, CsToDb.New(DbType.AnsiString, "bpchar", "bpchar(1) NULL", false, null, '\0') },
 
                 { typeof(TimeSpan).FullName, CsToDb.New(DbType.Time, "time","time NOT NULL", false, false, 0) },{ typeof(TimeSpan?).FullName, CsToDb.New(DbType.Time, "time", "time",false, true, null) },
                 { typeof(DateTime).FullName, CsToDb.New(DbType.DateTime, "timestamp", "timestamp NOT NULL", false, false, new DateTime(1970,1,1)) },{ typeof(DateTime?).FullName, CsToDb.New(DbType.DateTime, "timestamp", "timestamp", false, true, null) },
diff --git a/Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLCodeFirst.cs b/Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLCodeFirst.cs
index 173f1b92e..14b5d570d 100644
--- a/Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLCodeFirst.cs
+++ b/Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLCodeFirst.cs
@@ -33,7 +33,7 @@ namespace FreeSql.Odbc.PostgreSQL
                 { typeof(decimal).FullName, CsToDb.New(OdbcType.Numeric, "numeric", "numeric(10,2) NOT NULL", false, false, 0) },{ typeof(decimal?).FullName, CsToDb.New(OdbcType.Numeric, "numeric", "numeric(10,2)", false, true, null) },
 
                 { typeof(string).FullName, CsToDb.New(OdbcType.VarChar, "varchar", "varchar(255)", false, null, "") },
-                { typeof(char).FullName, CsToDb.New(OdbcType.Char, "char", "char(1) NULL", false, null, '\0') },
+                { typeof(char).FullName, CsToDb.New(OdbcType.Char, "bpchar", "bpchar(1) NULL", false, null, '\0') },
 
                 { typeof(TimeSpan).FullName, CsToDb.New(OdbcType.Time, "time","time NOT NULL", false, false, 0) },{ typeof(TimeSpan?).FullName, CsToDb.New(OdbcType.Time, "time", "time",false, true, null) },
                 { typeof(DateTime).FullName, CsToDb.New(OdbcType.DateTime, "timestamp", "timestamp NOT NULL", false, false, new DateTime(1970,1,1)) },{ typeof(DateTime?).FullName, CsToDb.New(OdbcType.DateTime, "timestamp", "timestamp", false, true, null) },