The following code examples show how to use data modification statements.

Procedure for Updates

Use SQLExecDirect to execute data manipulation statements and use the SQLRowCount function to obtain the affected rows.

INSERT

To insert updates:

SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &henv); 
SQLSetEnvAttr(henv, SQL_ATTR_ODBC_VERSION, (void*)SQL_OV_ODBC3, 0); 
SQLAllocHandle(SQL_HANDLE_DBC, henv, &hdbc); 
SQLDriverConnect(hdbc, 0, (SQLCHAR*)"Dsn=CData JDEdwards Source;", SQL_NTS, 0, 0, 0, 0);
SQLExecDirect(hstmt, (SQLCHAR*)"INSERT INTO AccountsPayable.AccountLedger (Amount) VALUES ('Jon Doe')", SQL_NTS);  
SQLINTEGER  rowCount = 0;
SQLRowCount(hstmt, &rowCount);

UPDATE

To retrieve updates:

SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &henv); 
SQLSetEnvAttr(henv, SQL_ATTR_ODBC_VERSION, (void*)SQL_OV_ODBC3, 0); 
SQLAllocHandle(SQL_HANDLE_DBC, henv, &hdbc); 
SQLDriverConnect(hdbc, 0, (SQLCHAR*)"Dsn=CData JDEdwards Source;", SQL_NTS, 0, 0, 0, 0);
SQLExecDirect(hstmt, (SQLCHAR*)"UPDATE AccountsPayable.AccountLedger SET Amount='Jon Doe' WHERE AccountNumber='10001')", SQL_NTS);  
SQLINTEGER  rowCount = 0;
SQLRowCount(hstmt, &rowCount); 

DELETE

To delete updates:

SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &henv); 
SQLSetEnvAttr(henv, SQL_ATTR_ODBC_VERSION, (void*)SQL_OV_ODBC3, 0); 
SQLAllocHandle(SQL_HANDLE_DBC, henv, &hdbc); 
SQLDriverConnect(hdbc, 0, (SQLCHAR*)"Dsn=CData JDEdwards Source;", SQL_NTS, 0, 0, 0, 0);
SQLExecDirect(hstmt, (SQLCHAR*)"DELETE FROM AccountsPayable.AccountLedger WHERE Id='325')", SQL_NTS);  
SQLINTEGER  rowCount = 0;
SQLRowCount(hstmt, &rowCount);