我想在表格中插入很多行。我将我的值作为数组发送到C ++中的ODBC参数化INSERT查询，如下所示：
INSERT INTO information1(Wert1,Wert2) VALUES(?,?) select wert1 from information1 WHERE Wert2=9"
如你所见，我想在INSERT之后运行一个select语句。
此代码能够在表中插入行，但select语句的结果是错误的（rsualt应该是 d ）。我有这样的期望，这样的东西在数据库中运行：
INSERT INTO information1(Wert1,Wert2) VALUES(a,4)
INSERT INTO information1(Wert1,Wert2) VALUES(b,3)
INSERT INTO information1(Wert1,Wert2) VALUES(c,17)
INSERT INTO information1(Wert1,Wert2) VALUES(d,9)
INSERT INTO information1(Wert1,Wert2) VALUES(e,5)
INSERT INTO information1(Wert1,Wert2) VALUES(f,45)
INSERT INTO information1(Wert1,Wert2) VALUES(g,6)
INSERT INTO information1(Wert1,Wert2) VALUES(h,4)
INSERT INTO information1(Wert1,Wert2) VALUES(i,2)
SELECT Wert1 FROM information1 WHERE Wert2=9
但实际发生的是：
INSERT INTO information1(Wert1,Wert2) VALUES(a,4)
SELECT Wert1 FROM information1 WHERE Wert2=9
INSERT INTO information1(Wert1,Wert2) VALUES(b,3)
INSERT INTO information1(Wert1,Wert2) VALUES(c,17)
INSERT INTO information1(Wert1,Wert2) VALUES(d,9)
INSERT INTO information1(Wert1,Wert2) VALUES(e,5)
INSERT INTO information1(Wert1,Wert2) VALUES(f,45)
INSERT INTO information1(Wert1,Wert2) VALUES(g,6)
INSERT INTO information1(Wert1,Wert2) VALUES(h,4)
INSERT INTO information1(Wert1,Wert2) VALUES(i,2)
因此它什么都不返回（对我来说错误的结果）。有人可以解释一下为什么在数据库中运行错误的语句顺序？以及如何更改代码以获得正确的顺序？
在这里你可以找到我的整个代码：
#include <windows.h>
#include <stdlib.h>
#include <stdio.h>
#include<tchar.h>
#include <sql.h>
#include <sqlext.h>
#include<sqltypes.h>
//#include<odbcss.h>
//#include<odbcinst.h>
#include<exception>
#include<iostream>
#include<stdio.h>
#include <conio.h>
#include "Debug\sqlncli.h";
void HandleDiagnosticRecord (SQLHANDLE hHandle,
SQLSMALLINT hType,
RETCODE RetCode)
{
SQLSMALLINT iRec = 0;
SQLINTEGER iError;
WCHAR wszMessage[1000];
WCHAR wszState[SQL_SQLSTATE_SIZE+1];
if (RetCode == SQL_INVALID_HANDLE)
{
fwprintf(stderr, L"Invalid handle!\n");
return;
}
while (SQLGetDiagRec(hType,
hHandle,
++iRec,
wszState,
&iError,
wszMessage,
(SQLSMALLINT)(sizeof(wszMessage) / sizeof(WCHAR)),
(SQLSMALLINT *)NULL) == SQL_SUCCESS)
{
// Hide data truncated..
if (wcsncmp(wszState, L"01004", 5))
{
fwprintf(stderr, L"[%5.5s] %s (%d)\n", wszState, wszMessage, iError);
}
}
}
#define TRYODBC(h, ht, x) { RETCODE rc = x;\
if (rc != SQL_SUCCESS) \
{ \
HandleDiagnosticRecord (h, ht, rc); \
} \
if (rc == SQL_ERROR) \
{ \
fwprintf(stderr, L"Error in " L#x L"\n"); \
Sleep(30000); \
} \
}
void extract_error(
char *fn,
SQLHANDLE handle,
SQLSMALLINT type)
{
SQLINTEGER i = 0;
SQLINTEGER native;
SQLWCHAR state[ 7 ];
SQLWCHAR text[256];
SQLSMALLINT len;
SQLRETURN ret;
fprintf(stderr,
"\n"
"The driver reported the following diagnostics whilst running "
"%s\n\n",
fn);
do
{
ret = SQLGetDiagRec(type, handle, ++i, state, &native, text,
sizeof(text), &len );
if (SQL_SUCCEEDED(ret))
printf("%s:%ld:%ld:%s\n", state, i, native, text);
}
while( ret == SQL_SUCCESS );
}
int main()
{
SQLHENV henv=SQL_NULL_HENV;
SQLHDBC hdbc=SQL_NULL_HDBC;
SQLHSTMT hstmt=SQL_NULL_HSTMT;
RETCODE rc;
SQLTCHAR Statement[] = _T("INSERT INTO information1(Wert1,Wert2) VALUES(?,?) select count(*) as a from information1 ") ;
SQLTCHAR sqlStatementOUT[255];
SQLINTEGER lenStatementOUT=0;
memset(sqlStatementOUT,' ',255);
SQLWCHAR dsn[30] = L"mssqltest"; //Name DNS
SQLWCHAR user[10] = L"di_test";
SQLWCHAR pass[10] = L"di_test";
SQLCHAR retValFName[256];
SQLCHAR retValLName[256];
SQLINTEGER cbLName,cbFName;
SQLLEN cName=0;
SQLCHAR *TVPTableName=(SQLCHAR *) "TableTVP";
#define PARAM_ARRAY_SIZE 9
#define STRING_SIZE 20
SQLCHAR Arrayname1[PARAM_ARRAY_SIZE][STRING_SIZE] = {"4","3","17","9","5","45","6","4","2"};
SQLCHAR Arrayname2[PARAM_ARRAY_SIZE][STRING_SIZE] = {"a","b","c","d","e","f","g","h","i"};
SQLLEN cbTVPTableNAme=10;
SQLLEN cbArraycode[10],cbArrayname[10];
SQLLEN lTVPRowsUsed;
rc = SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &henv);
rc= SQLSetEnvAttr(henv,SQL_ATTR_ODBC_VERSION,(void *) SQL_OV_ODBC3,0);
rc = SQLAllocHandle(SQL_HANDLE_DBC, henv, &hdbc);
rc = SQLConnectW(hdbc, (SQLWCHAR *)dsn, SQL_NTS, (SQLWCHAR *) user, SQL_NTS, (SQLWCHAR *) pass, SQL_NTS); // from this line rc=-1
rc = SQLAllocHandle(SQL_HANDLE_STMT,hdbc,&hstmt);
rc = SQLSetStmtAttr (hstmt, SQL_ATTR_PARAM_BIND_TYPE, SQL_PARAM_BIND_BY_COLUMN, 0);
SQLUSMALLINT Param_status_array[PARAM_ARRAY_SIZE];
SQLULEN ParamsProcessed;
rc=SQLSetStmtAttr(hstmt,SQL_ATTR_PARAMSET_SIZE,(SQLPOINTER*) PARAM_ARRAY_SIZE, 0);
rc=SQLSetStmtAttr(hstmt,SQL_ATTR_PARAM_STATUS_PTR,Param_status_array,0);
rc=SQLSetStmtAttr(hstmt,SQL_ATTR_PARAMS_PROCESSED_PTR,&ParamsProcessed,0);
SQLUSMALLINT newsize=0;
rc=SQLBindParameter(hstmt,1,SQL_PARAM_INPUT, SQL_C_CHAR, SQL_VARCHAR, STRING_SIZE, 0, Arrayname1, STRING_SIZE,0);
rc=SQLBindParameter(hstmt,2,SQL_PARAM_INPUT, SQL_C_CHAR, SQL_VARCHAR, STRING_SIZE, 0, Arrayname2, STRING_SIZE,0);
rc = SQLPrepare(hstmt, (SQLTCHAR *)Statement, SQL_NTS);
rc=SQLGetStmtAttr(hstmt,SQL_ATTR_PARAMSET_SIZE,&newsize,4,NULL);
newsize=0;
rc = SQLExecute(hstmt);
rc=SQLGetStmtAttr(hstmt,SQL_ATTR_PARAMSET_SIZE,&newsize,4,NULL);
if(rc==SQL_SUCCESS)
{
SQLSMALLINT sNumResults;
SQLNumResultCols(hstmt,&sNumResults);
SQLBindCol(hstmt,
1,
SQL_C_TCHAR,
(SQLPOINTER) retValFName,
100,
0);
while(true)
{
rc=SQLFetch(hstmt);
if(rc==SQL_SUCCESS || rc==SQL_SUCCESS_WITH_INFO)
{
SQLGetData(hstmt,1,SQL_C_CHAR,retValFName,256, &cbLName);
std::cout << retValFName <<" "<< std::endl;
}
else
{
break;
}
}
}
system("pause");
return 0;
}
答案 0 :(得分：1)
INSERT INTO information1（Wert1，Wert2）VALUES（？，？）执行SINGLE RECORD INSERT。不是批量插入。
所以，当你出类拔萃时
INSERT INTO information1(Wert1,Wert2) VALUES(?,?) select count(*) as a from information1
执行单个插入然后执行选择 分开两个sql命令。执行数组的插入，然后单独选择。