SSIS错误：“投射规范无效的字符值”
我试图导入一个Excel文件（.xls）18列; 第一行有列名。 该文件包含3718行学生个人信息。 这是我收到的文件导入到SQL Server数据库中的错误：
- Copying to [dbo].[masterlist$] (Error) Messages * Error 0xc0202009: Data Flow Task 1: SSIS Error Code DTS_E_OLEDBERROR. An OLE DB error has occurred. Error code: 0x80004005. An OLE DB record is available. Source: "Microsoft SQL Server Native Client 10.0" Hresult: 0x80004005 Description: "Invalid character value for cast specification". (SQL Server Import and Export Wizard) * Error 0xc020901c: Data Flow Task 1: There was an error with input column "dbirth" (121) on input "Destination Input" (84). The column status returned was: "Conversion failed because the data value overflowed the specified type.". (SQL Server Import and Export Wizard) * Error 0xc0209029: Data Flow Task 1: SSIS Error Code DTS_E_INDUCEDTRANSFORMFAILUREONERROR. The "input "Destination Input" (84)" failed because error code 0xC020907A occurred, and the error row disposition on "input "Destination Input" (84)" specifies failure on error. An error occurred on the specified object of the specified component. There may be error messages posted before this with more information about the failure. (SQL Server Import and Export Wizard) * Error 0xc0047022: Data Flow Task 1: SSIS Error Code DTS_E_PROCESSINPUTFAILED. The ProcessInput method on component "Destination - masterlist$" (71) failed with error code 0xC0209029 while processing input "Destination Input" (84). The identified component returned an error from the ProcessInput method. The error is specific to the component, but the error is fatal and will cause the Data Flow task to stop running. There may be error messages posted before this with more information about the failure. (SQL Server Import and Export Wizard) * Error 0xc02020c4: Data Flow Task 1: The attempt to add a row to the Data Flow task buffer failed with error code 0xC0047020. (SQL Server Import and Export Wizard) * Error 0xc0047038: Data Flow Task 1: SSIS Error Code DTS_E_PRIMEOUTPUTFAILED. The PrimeOutput method on component "Source - masterlist$" (1) returned error code 0xC02020C4. The component returned a failure code when the pipeline engine called PrimeOutput(). The meaning of the failure code is defined by the component, but the error is fatal and the pipeline stopped executing. There may be error messages posted before this with more information about the failure. (SQL Server Import and Export Wizard) 这是两个相关的错误：
“投射规范无效的字符值”
“转换失败，因为数据值溢出指定的types”。
您的input（Excel）数据很可能未正确格式化或无效。
没有看到你的input文件和目标表，这是很难帮助，但你应该尝试自己研究这些错误。