以下是变量的声明:
string strFirstName;
string strLastName;
string strAddress;
string strCity;
string strState;
double dblSalary;
string strGender;
int intAge;
...做一些“cin”语句来获取数据......
retcode = SQLPrepare(StatementHandle, (SQLCHAR *)"INSERT INTO EMPLOYEE ([FirstName], [LastName], [Address], [City], [State], [Salary], [Gender],[Age]) VALUES (?,?,?,?,?,?,?,?)", SQL_NTS);
retcode = SQLBindParameter(StatementHandle, 1, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_LONGVARCHAR, 50, 0 &strFirstName,0, NULL);
retcode = SQLBindParameter(StatementHandle, 2, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_LONGVARCHAR, 50, 0, &strLastName,0, NULL);
retcode = SQLBindParameter(StatementHandle, 3, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_LONGVARCHAR, 30, 0, &strAddress,0, NULL);
retcode = SQLBindParameter(StatementHandle, 4, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_LONGVARCHAR, 30, 0, &strCity,0, NULL);
retcode = SQLBindParameter(StatementHandle, 5, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_LONGVARCHAR, 3, 0, &strState,0, NULL);
retcode = SQLBindParameter(StatementHandle, 6, SQL_PARAM_INPUT, SQL_C_DOUBLE, SQL_DOUBLE, 0, 0, &dblSalary,0, NULL);
retcode = SQLBindParameter(StatementHandle, 7, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_LONGVARCHAR, 2, 0, &strGender,0, NULL);
retcode = SQLBindParameter(StatementHandle, 8, SQL_PARAM_INPUT, SQL_C_LONG, SQL_INTEGER, 0, 0, &intAge,0, NULL);
retcode = SQLExecute(StatementHandle);
int和double工作正常并存储在表中......但我无法弄清楚如何将字符串存储...
答案 0 :(得分:8)
MSDN documentation for SQLBindParameter表示您要传递一个缓冲区,其中包含ParameterValuePtr
的数据和BufferLength
的缓冲区长度(以字节为单位):
retcode = SQLBindParameter(StatementHandle, 1, SQL_PARAM_INPUT, SQL_C_CHAR,
SQL_LONGVARCHAR, 50, 0, strFirstName.c_str(), strFirstName.length(), NULL);
ParameterValuePtr [延迟输入] A. 指向缓冲区的指针 参数的数据。更多 信息,请参阅“ParameterValuePtr 争论“在”评论中。“
BufferLength [输入/输出]长度 ParameterValuePtr缓冲区,以字节为单位。 有关更多信息,请参阅 “评论”中的“BufferLength Argument”。
答案 1 :(得分:0)
看起来像是api,想要一个 unsigned char * 尝试使用 c_str()方法调用传入c字符串。