I found the problem.
The problem was the encoding tables
That's originally stood
CREATE TABLE [dbo].[user_item] (
[item_id] int IDENTITY(1, 1) NOT FOR REPLICATION NOT NULL,
[char_id] int NOT NULL,
[item_type] int NOT NULL,
[amount] int NOT NULL,
[enchant] int NOT NULL,
[eroded] int NOT NULL,
[bless] tinyint NOT NULL,
[ident] int NOT NULL,
[wished] tinyint DEFAULT 0 NOT NULL,
[warehouse] int NOT NULL
)
ON [PRIMARY]
GO
But it should be
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[user_item] (
[item_id] int IDENTITY(1, 1) NOT FOR REPLICATION NOT NULL,
[char_id] int NOT NULL,
[item_type] int NOT NULL,
[amount] int NOT NULL,
[enchant] int NOT NULL,
[eroded] int NOT NULL,
[bless] tinyint NOT NULL,
[ident] int NOT NULL,
[wished] tinyint DEFAULT 0 NOT NULL,
[warehouse] int NOT NULL
)
ON [PRIMARY]
GO