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我的选择语句看起来像这样

SELECT tb1.name FROM table1 tb1, table2 tb2 WHERE tb2.name=? AND tb2.tb1_key_id=tb1.id;

我的 Bindparameter 调用看起来像这样

SQLBindParameter(m_hStatement,1,SQL_PARAM_INPUT,SQL_C_CHAR,SQL_CHAR,len,0,(LPVOID)buff,len,(SQLLEN *)pcbValue);

在哪里buff is void*

当我在此语句上运行 SQLExecute 时,SQL_SUCCESS_WITH_INFO当我查看错误详细信息时,它会返回[Firebird ODBC driver] data truncated

我对数据库完全陌生,如果需要更多详细信息,请告诉我

顺便说一句,相同的语句在 32 位应用程序中运行良好,如果在 64 位中编译会出现此问题。

UPDATE- 再次回到这个问题。

我得到了 SQL 跟踪文件

MyApp    4e0-1680   ENTER SQLPrepareW 
    HSTMT               0x0000000008C9E210
    WCHAR *             0x000000000DF04CE0 [      -3] "SELECT tb1.name FROM table1 tb1, table2 tb2 WHERE tb2.name=? AND tb2.tb1_key_id=tb1.id;\ 0"
    SDWORD                    -3

MyApp    4e0-1680   EXIT  SQLPrepareW  with return code 0 (SQL_SUCCESS)
    HSTMT               0x0000000008C9E210
    WCHAR *             0x000000000DF04CE0 [      -3] "SELECT tb1.name FROM table1 tb1, table2 tb2 WHERE tb2.name=? AND tb2.tb1_key_id=tb1.id;\ 0"
    SDWORD                    -3

MyApp    4e0-1680   ENTER SQLBindParameter 
    HSTMT               0x0000000008C9E210
    UWORD                        1 
    SWORD                        1 <SQL_PARAM_INPUT>
    SWORD                        1 <SQL_C_CHAR>
    SWORD                        1 <SQL_CHAR>
    SQLULEN                   48
    SWORD                        0 
    PTR                0x0000000008B932D0
    SQLLEN                    48
    SQLLEN *            0x0000000008B93008

MyApp    4e0-1680   EXIT  SQLBindParameter  with return code 0 (SQL_SUCCESS)
    HSTMT               0x0000000008C9E210
    UWORD                        1 
    SWORD                        1 <SQL_PARAM_INPUT>
    SWORD                        1 <SQL_C_CHAR>
    SWORD                        1 <SQL_CHAR>
    SQLULEN                   48
    SWORD                        0 
    PTR                0x0000000008B932D0
    SQLLEN                    48
    SQLLEN *            0x0000000008B93008 (4294967293)

MyApp    4e0-1680   ENTER SQLBindParameter 
    HSTMT               0x0000000008C9E210
    UWORD                        2 
    SWORD                        1 <SQL_PARAM_INPUT>
    SWORD                        1 <SQL_C_CHAR>
    SWORD                        1 <SQL_CHAR>
    SQLULEN                   48
    SWORD                        0 
    PTR                0x0000000008B93298
    SQLLEN                    48
    SQLLEN *            0x0000000008B93008

MyApp    4e0-1680   EXIT  SQLBindParameter  with return code 0 (SQL_SUCCESS)
    HSTMT               0x0000000008C9E210
    UWORD                        2 
    SWORD                        1 <SQL_PARAM_INPUT>
    SWORD                        1 <SQL_C_CHAR>
    SWORD                        1 <SQL_CHAR>
    SQLULEN                   48
    SWORD                        0 
    PTR                0x0000000008B93298
    SQLLEN                    48
    SQLLEN *            0x0000000008B93008 (4294967293)

MyApp    4e0-1680   ENTER SQLExecute 
    HSTMT               0x0000000008C9E210

MyApp    4e0-1680   EXIT  SQLExecute  with return code 1 (SQL_SUCCESS_WITH_INFO)
    HSTMT               0x0000000008C9E210

    DIAG [01004] [ODBC Firebird Driver]Data truncated (0) 

    DIAG [01004] [ODBC Firebird Driver]Data truncated (0) 

MyApp    4e0-1680   ENTER SQLErrorW 
    HENV                0x0000000000000000
    HDBC                0x0000000000000000
    HSTMT               0x0000000008C9E210
    WCHAR *             0x000000000A69BFE8
    SDWORD *            0x000000000A69BFD4
    WCHAR *             0x0000000000123CF0 
    SWORD                     1024 
    SWORD *             0x0000000000124104

MyApp    4e0-1680   EXIT  SQLErrorW  with return code 0 (SQL_SUCCESS)
    HENV                0x0000000000000000
    HDBC                0x0000000000000000
    HSTMT               0x0000000008C9E210
    WCHAR *             0x000000000A69BFE8 [       5] "01004"
    SDWORD *            0x000000000A69BFD4 (0)
    WCHAR *             0x0000000000123CF0 [      36] "[ODBC Firebird Driver]Data truncated"
    SWORD                     1024 
    SWORD *             0x0000000000124104 (36)

MyApp    4e0-1680   ENTER SQLRowCount 
    HSTMT               0x0000000008C9E210
    SQLLEN *            0x0000000000123218

MyApp    4e0-1680   EXIT  SQLRowCount  with return code 0 (SQL_SUCCESS)
    HSTMT               0x0000000008C9E210
    SQLLEN *            0x0000000000123218 (-1)

MyApp    4e0-1680   ENTER SQLNumResultCols 
    HSTMT               0x0000000008C9E210
    SWORD *             0x00000000001231F4

MyApp    4e0-1680   EXIT  SQLNumResultCols  with return code 0 (SQL_SUCCESS)
    HSTMT               0x0000000008C9E210
    SWORD *             0x00000000001231F4 (1)

MyApp    4e0-1680   ENTER SQLNumParams 
    HSTMT               0x0000000008C9E210
    SWORD *             0x00000000001231F4

MyApp    4e0-1680   EXIT  SQLNumParams  with return code 0 (SQL_SUCCESS)
    HSTMT               0x0000000008C9E210
    SWORD *             0x00000000001231F4 (2)

有什么我可以为你提供帮助的吗

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1 回答 1

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当我的 SQL 参数数据无法确定我发送的数据类型时,我通常会在 Java 中遇到奇怪的数据截断问题。它有点隐藏在几层抽象之下,但通常我通过手动转义我的输入来修复它。

前任。

select name from company where name = $P!{input}

有时会导致 SQL Exception 'data truncated'

select name from company where name = '$P!{input}'

$P!{ 表示将数据直接放入字符串中。试一试?也许存在类型推断问题。

于 2013-07-20T05:59:45.087 回答