SQLFetch(）失败，返回SQLState 24000(无效游标）

SQLFetch() fails with the SQLState 24000 (Invalid Cursor)

本文关键字：24000 无效 游标 SQLState 失败 SQLFetch 返回      更新时间：2023-10-16

首先，这个问题不是的重复

  • SQLSTATE 24000-游标状态无效
  • 无效的游标状态，SQLExecDirect中的SQL状态24000
  • 使用unixOdbc-SQLSTATE[24000]的SELECT之一失败：游标状态无效

因为它发生在一个干净的单一SQL环境中，该环境以前从未执行过任何操作！

我正试图用准备好的SQL语句执行一个存储过程，该语句包含以下C++ODBC代码：

void ItemDBManager::UpgradeItem(SQLHSTMT hstmt, QUERY_UPGRADE_ITEM_PARAMS* upgradeItemParams)
{
// Preparing of the Query
RETCODE ret = SQLPrepare(hstmt, (UCHAR*)"{call dbo.upgrade_Item(?,?)}", SQL_NTS);
if (ret != SQL_SUCCESS && ret != SQL_SUCCESS_WITH_INFO)
{
   // Get diagnostics for the error and log it to a file
   ProcessSQLError(SQL_HANDLE_STMT, hstmt, "dbo.upgrade_Item failed!");
   SQLFreeStmt(hstmt, SQL_CLOSE);
   return;
}
// Binding of Parameters
SQLBindParameter(hstmt, 1, SQL_PARAM_INPUT, SQL_C_SBIGINT, SQL_BIGINT, 0, 0, &upgradeItemParams->OldItemUniqueNumber, 0, NULL);
SQLBindParameter(hstmt, 2, SQL_PARAM_INPUT, SQL_C_ULONG, SQL_INTEGER, 0, 0, &upgradeItemParams->UpgradedItemUID, 0, NULL);
// Binding of the Result
SQLINTEGER cb[44];
fill_n(cb, 44, SQL_NTS);
ITEM newItem; // My struct to hold the data returned by the Stored Procedure
// Binding of result Columns
int coldIdx = 0;
SQLBindCol(hstmt, ++colIdx, SQL_C_SBIGINT, &storeItem.UniqueNumber, 0, &cb[colIdx]);
SQLBindCol(hstmt, ++colIdx, SQL_C_ULONG, &storeItem.AccountUniqueNumber, 0, &cb[colIdx]);
[...]
// Zeroing the resulting struct
memset(&newItem, 0x00, sizeof(ITEM));
// Execution of the Statement
ret = SQLExecute(hstmt);
if (ret != SQL_SUCCESS && ret != SQL_SUCCESS_WITH_INFO)
{
   // Get diagnostics for the error and log it to a file
   ProcessSQLError(SQL_HANDLE_STMT, hstmt, "dbo.upgrade_Item failed!");
   SQLFreeStmt(hstmt, SQL_CLOSE);
   return;
}
// Fetching of a single result row
ret = SQLFetch(hstmt);
if (ret == SQL_NO_DATA || (ret != SQL_SUCCESS && ret != SQL_SUCCESS_WITH_INFO))
{
   // <-- The Debugger enters here with the return code of -1 !!!!
   // Get diagnostics for the error and log it to a file
   ProcessSQLError(SQL_HANDLE_STMT, hstmt, "dbo.upgrade_Item failed!");
   SQLFreeStmt(hstmt, SQL_CLOSE);
   return;
}
[...] // Further Handling of the resulted ITEM Struct and freeing of the SQL Statement
}

调试器进入最后一个返回代码为-1的IF语句，它是一个通用的SQL_ERROR。

通过获得错误的诊断Rect，我得到以下输出：

06-24 14:05:19| szSqlState    = 24000
06-24 14:05:19| pfNativeError = 0
06-24 14:05:19| szErrorMsg    = [Microsoft][ODBC SQL Server Driver]Invalid Cursorstatus 
06-24 14:05:19| pcbErrorMsg   = 58
06-24 14:05:19| ODBCRowNumber = -1 
06-24 14:05:19| SSrvrLine     = -1 
06-24 14:05:19| SSrvrMsgState = 0 
06-24 14:05:19| SSrvrSeverity = 0 
06-24 14:05:19| SSrvrProcname =  
06-24 14:05:19| SSrvrSrvname  =

直接在微软的SQL管理工作室中执行查询给了我一个完美的结果，没有任何错误。

出现此错误的原因是什么？如何进一步调试它

此外，存储过程dbo.upgrade_Item:的内容

-- Stored Procedure dbo.upgrade_Item
@i_OldStoreUID BIGINT,
@i_NewItemNum  INT
AS
DECLARE @insertedIDs TABLE(Id BIGINT)
-- Updating of the ItemStore Table
INSERT INTO td_ItemStore (*my columns*)
OUTPUT INSERTED.UniqueNumber INTO @insertedIDs 
SELECT *my columns*, @i_NewItemNum
FROM td_ItemStore
WHERE UniqueNumber = @i_OldStoreUID
-- Returning the new inserted Item
SELECT * FROM td_ItemStore WHERE UniqueNumber = (SELECT TOP 1 Id FROM @insertedStoreUIDs)

非常感谢您的帮助！

显然我遇到了与这个问题相同的问题：带有MSSQL的PDO返回无效的游标

问题出现在我的存储过程中。为了得到正确的光标，我不得不通过设置NOCOUNT ON 来禁用受影响行的输出

固定程序：

-- Stored Procedure dbo.upgrade_Item
@i_OldStoreUID BIGINT,
@i_NewItemNum  INT
AS
BEGIN
   SET NOCOUNT ON;
   DECLARE @insertedIDs TABLE(Id BIGINT)
   -- Updating of the ItemStore Table
   INSERT INTO td_ItemStore (*my columns*)
   OUTPUT INSERTED.UniqueNumber INTO @insertedIDs 
   SELECT *my columns*, @i_NewItemNum
   FROM td_ItemStore
   WHERE UniqueNumber = @i_OldStoreUID
   -- Returning the new inserted Item
   SELECT * FROM td_ItemStore WHERE UniqueNumber = (SELECT TOP 1 Id FROM @insertedStoreUIDs)
END
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