-

SqlSugar/Abstract/CodeFirstProvider/CodeFirstProvider.cs

@@ -154,6 +154,7 @@ namespace SqlSugar
                             this.Context.DbMaintenance.DropConstraint(tableName, constraintName);
                         this.Context.DbMaintenance.DropColumn(tableName, item.DbColumnName);
                         this.Context.DbMaintenance.AddColumn(tableName, EntityColumnToDbColumn(entityInfo, tableName, item));
+                        if (item.IsPrimarykey)
                             this.Context.DbMaintenance.AddPrimaryKey(tableName, item.DbColumnName);
                     }
                 }