Question

我在将NUMERIC(8,0)从Sql Server迁移到ASE（v16.0）中具有用户定义类型NUMERIC(8,0)的列时遇到问题。

我有简单的用户定义类型：

IF EXISTS (SELECT * FROM systypes WHERE name='typ_small_id')
BEGIN
EXEC sp_droptype 'typ_small_id'
IF EXISTS (SELECT * FROM systypes WHERE name='typ_small_id')
    PRINT '<<< FAILED DROPPING DATATYPE typ_small_id >>>'
ELSE
    PRINT '<<< DROPPED DATATYPE typ_small_id >>>'
END
go
EXEC sp_addtype 'typ_small_id','numeric(8,0)','NOT NULL'
go
IF EXISTS (SELECT * FROM systypes WHERE name='typ_small_id')
    PRINT '<<< CREATED DATATYPE typ_small_id >>>'
ELSE
    PRINT '<<< FAILED CREATING DATATYPE typ_small_id >>>'
go

这用于小表：

create TABLE dbo.target
(
    e_type_id     typ_small_id  /*NOT*/ NULL
)

我正在尝试使用AseBulkCopy.WriteToServer从SqlServer BulkCopy一个值。源值在SqlServer中定义为NUMERIC(8,0)。我正在使用ASE的.net客户端，我的应用程序代码是C＃：

public void BulkCopyFromSqlServer_t_sec_exchange(string sourceConnectionString, string targetConnectionString) { SqlConnection sourceConnection = null; AseConnection targetConnection = new AseConnection(targetConnectionString); try { IDataReader dataSource; //The next method call returns a single row with a single column, defined as a NUMERIC (8,0) in SqlSvr. MssqlReader.GetDataReaderSelect_t_sec_exchange(out sourceConnection, out dataSource); targetConnection.Open(); AseBulkCopy blk = new AseBulkCopy(targetConnection, new AseBulkCopyOptions(), null); blk.BulkCopyTimeout = 1200; blk.DestinationTableName = "dbo.target"; blk.ColumnMappings.Clear(); blk.WriteToServer(dataSource); blk.Close(); } catch (AseException ex) { Console.WriteLine(ex.Message); } finally { sourceConnection.Dispose(); targetConnection.Dispose(); } }

来自SqlServer的值为1。这一切都正常，直到我将target.e_type_id定义为typ_small_id NOT NULL而不是可以为空。当我这样做时，我得到一个AseError： The data type or the function is not supported.

堆栈跟踪： at Sybase.Data.AseClient.AseBulkCopyBusinessBulk.TdsToAseDBType(TdsTypesDefines type, Int32 len, Int32 usertype, Boolean IsNullable, Int32& DateTimeLen) at Sybase.Data.AseClient.AseBulkCopyBusinessBulk.InitMetadata() at Sybase.Data.AseClient.AseBulkCopyBusinessBulk.InitFmtData() at Sybase.Data.AseClient.AseBulkCopyBusinessBulk.BulkOperation() at Sybase.Data.AseClient.AseBulkCopyBusinessBulk.RunInsertsRowsReader() at Sybase.Data.AseClient.AseBulkCopy.WriteToServer(IDataReader reader) at SybaseBulkCopy.SybaseCommand.BulkCopyFromSqlServer(String sourceConnectionString, String targetConnectionString) in c:..\SybaseCommand.cs:line 32

当列定义为typ_small_id NOT NULL时，以下查询都会从查询编辑器成功将数据插入到列中，因此它看起来像WriteToServer代码中的错误：

insert into dbo.target ( e_type_id ) SELECT top 1 cast(1 as numeric(8,0)) as e_type_id from source_tbl

和

insert into dbo.target ( e_type_id ) SELECT top 1 cast(1 as int) as e_type_id from source_tbl

毋庸置疑，客户的表将列定义为非空（并且不能更改架构），因此我需要了解如何将数据迁移到其ASE表中。

有没有人看过这个或找到了解决方法？

Answer 1

这已被SAP（Sybase技术支持部门）确认为一个错误。

Sybase ASE BulkCopy＆＃34;不支持数据类型或函数＆＃34;写入非空的用户定义类型

1 个答案: