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#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include "common.h"
int main(int argc, char **argv)
{
int rc;
HSTMT hstmt = SQL_NULL_HSTMT;
HSTMT hstmt2 = SQL_NULL_HSTMT;
char cursornamebuf[20];
SQLSMALLINT cursornamelen;
char buf[40];
SQLLEN ind;
/**** Test cursor names ****/
test_connect();
rc = SQLAllocHandle(SQL_HANDLE_STMT, conn, &hstmt);
if (!SQL_SUCCEEDED(rc))
{
print_diag("failed to allocate stmt handle", SQL_HANDLE_DBC, conn);
exit(1);
}
rc = SQLAllocHandle(SQL_HANDLE_STMT, conn, &hstmt2);
if (!SQL_SUCCEEDED(rc))
{
print_diag("failed to allocate stmt handle", SQL_HANDLE_DBC, conn);
exit(1);
}
/* first create a test table we can update */
rc = SQLExecDirect(hstmt,
(SQLCHAR *) "create temporary table cursortesttbl as "
"SELECT id, 'foo' || id as t FROM generate_series(1,10) id",
SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLExecDirect failed", hstmt);
rc = SQLGetCursorName(hstmt, cursornamebuf, sizeof(cursornamebuf), &cursornamelen);
CHECK_STMT_RESULT(rc, "SQLGetCursorName failed", hstmt);
rc = SQLFreeStmt(hstmt, SQL_CLOSE);
CHECK_STMT_RESULT(rc, "SQLFreeStmt failed", hstmt);
/* Per the ODBC spec, the cursor name should begin with SQL_CUR */
cursornamebuf[strlen("SQL_CUR")] = '\0';
printf("cursor name prefix: %s\n", cursornamebuf);
/* Use a custom name */
rc = SQLSetCursorName(hstmt, (SQLCHAR *) "my_test_cursor", SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLSetCursorName failed", hstmt);
/*
* Fetch a large result set without cursor (in Declare/fetch mode, it will
* be fetched in chunks)
*/
rc = SQLExecDirect(hstmt, (SQLCHAR *) "SELECT * FROM cursortesttbl WHERE id < 9", SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLExecDirect failed", hstmt);
/* Fetch until we find the row with id = 5 */
do {
rc = SQLFetch(hstmt);
CHECK_STMT_RESULT(rc, "SQLFetch failed", hstmt);
rc = SQLGetData(hstmt, 1, SQL_C_CHAR, buf, sizeof(buf), &ind);
CHECK_STMT_RESULT(rc, "SQLGetData failed", hstmt);
} while(strcmp(buf, "5") != 0);
/* use the cursor's name for update */
/*
* XXX: Disabled, because the driver doesn't support UPDATE ... WHERE
* CURRENT OF. It works with some options (Fetch=1), but it's not reported
* as supported so there's no guarantees.
*/
#ifdef NOT_SUPPORTED
printf("Updating row with id=5...\n");
rc = SQLExecDirect(hstmt2, (SQLCHAR *) "UPDATE cursortesttbl SET t = 'updated' || id WHERE CURRENT OF my_test_cursor", SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLExecDirect failed", hstmt2);
rc = SQLFreeStmt(hstmt, SQL_CLOSE);
CHECK_STMT_RESULT(rc, "SQLFreeStmt failed", hstmt);
rc = SQLExecDirect(hstmt, (SQLCHAR *) "SELECT * FROM cursortesttbl ORDER BY id FOR UPDATE", SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLExecDirect failed", hstmt);
print_result(hstmt);
#endif
rc = SQLFreeStmt(hstmt, SQL_CLOSE);
CHECK_STMT_RESULT(rc, "SQLFreeStmt failed", hstmt);
/****
* Test a cursor name that requires quoting. The ODBC spec recommends
* not to use such a name, but we better handle it gracefully anyway.
*
* FIXME: the driver doesn't actually handle this.
*/
#ifdef BROKEN
rc = SQLSetCursorName(hstmt, (SQLCHAR *) "my nasty \"quoted\" cur'sor", SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLSetCursorName failed", hstmt);
rc = SQLExecDirect(hstmt, (SQLCHAR *) "SELECT * FROM cursortesttbl WHERE id < 4", SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLExecDirect failed", hstmt);
print_result(hstmt);
#endif
/* Clean up */
test_disconnect();
return 0;
}
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