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#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include "common.h"
static void
printFetchResult(HSTMT hstmt, int rc)
{
if (SQL_SUCCEEDED(rc))
{
char buf[40];
SQLLEN ind;
if (rc == SQL_SUCCESS_WITH_INFO)
print_diag("got SUCCESS_WITH_INFO", SQL_HANDLE_STMT, hstmt);
rc = SQLGetData(hstmt, 1, SQL_C_CHAR, buf, sizeof(buf), &ind);
CHECK_STMT_RESULT(rc, "SQLGetData failed", hstmt);
printf("fetched: %s\n", buf);
}
else if (rc == SQL_NO_DATA)
printf("Fetch: no data found\n"); /* expected */
else
CHECK_STMT_RESULT(rc, "Fetch failed", hstmt);
}
static void
testLargeResult(HSTMT hstmt)
{
int rc;
int i;
/* Make the cursor scrollable */
rc = SQLSetStmtAttr(hstmt, SQL_CURSOR_TYPE,
(SQLPOINTER) SQL_CURSOR_STATIC, SQL_IS_UINTEGER);
CHECK_STMT_RESULT(rc, "SQLSetStmtAttr failed", hstmt);
/*
* Fetch a large result set without cursor (in Declare/fetch mode, it will
* be fetched in chunks)
*/
rc = SQLExecDirect(hstmt, (SQLCHAR *) "SELECT 'foo' || g FROM generate_series(1, 3210) g", SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLExecDirect failed", hstmt);
/* Fetch the first 10 rows */
for (i = 0; i < 10; i++)
{
rc = SQLFetch(hstmt);
printFetchResult(hstmt, rc);
}
/* Test all the SQL_FETCH_* modes with SQLFetchScroll */
printf("Testing SQL_FETCH_NEXT...\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_NEXT, 0);
printFetchResult(hstmt, rc);
rc = SQLFetchScroll(hstmt, SQL_FETCH_NEXT, 0);
printFetchResult(hstmt, rc);
printf("Testing SQL_FETCH_PRIOR...\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_PRIOR, 0);
printFetchResult(hstmt, rc);
printf("Testing SQL_FETCH_ABSOLUTE (5)...\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_ABSOLUTE, 5);
printFetchResult(hstmt, rc);
printf("Testing SQL_FETCH_RELATIVE (+2)...\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_RELATIVE, 2);
printFetchResult(hstmt, rc);
printf("Testing SQL_FETCH_RELATIVE (-2)...\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_RELATIVE, -2);
printFetchResult(hstmt, rc);
printf("Testing SQL_FETCH_RELATIVE (+1)...\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_RELATIVE, 1);
printFetchResult(hstmt, rc);
printf("Testing SQL_FETCH_RELATIVE (0, no movement)...\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_RELATIVE, 0);
printFetchResult(hstmt, rc);
printf("Testing SQL_FETCH_FIRST...\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_FIRST, 0);
printFetchResult(hstmt, rc);
/*** Ok, now test the behavior at "before first row" ***/
printf("Testing SQL_FETCH_PRIOR before first row...\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_PRIOR, 0);
printFetchResult(hstmt, rc);
rc = SQLFetchScroll(hstmt, SQL_FETCH_PRIOR, 0);
printFetchResult(hstmt, rc);
printf("Testing SQL_FETCH_NEXT...\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_NEXT, 0);
printFetchResult(hstmt, rc);
/*** Test behavior at the end ***/
printf("Testing SQL_FETCH_LAST...\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_LAST, 0);
printFetchResult(hstmt, rc);
printf("Testing SQL_FETCH_LAST...\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_LAST, 0);
printFetchResult(hstmt, rc);
printf("Testing SQL_FETCH_NEXT at the end of result set\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_NEXT, 0);
printFetchResult(hstmt, rc);
printf("Testing SQL_FETCH_NEXT at the end of result set\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_NEXT, 0);
printFetchResult(hstmt, rc);
printf("And SQL_FETCH_PRIOR...\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_PRIOR, 0);
printFetchResult(hstmt, rc);
printf("Testing SQL_FETCH_RELATIVE (+10)...\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_RELATIVE, 10);
printFetchResult(hstmt, rc);
printf("And SQL_FETCH_PRIOR...\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_PRIOR, 0);
printFetchResult(hstmt, rc);
printf("Testing negative SQL_FETCH_ABSOLUTE (-5)...\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_ABSOLUTE, -5);
printFetchResult(hstmt, rc);
printf("Testing negative SQL_FETCH_ABSOLUTE, before start...\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_ABSOLUTE, -10000);
printFetchResult(hstmt, rc);
printf("Testing SQL_FETCH_ABSOLUTE, beoynd end...\n");
rc = SQLFetchScroll(hstmt, SQL_FETCH_ABSOLUTE, 10000);
printFetchResult(hstmt, rc);
rc = SQLFreeStmt(hstmt, SQL_CLOSE);
CHECK_STMT_RESULT(rc, "SQLFreeStmt failed", hstmt);
}
static const char *
sql_commit_behavior_str(SQLUINTEGER info)
{
static char buf[50];
switch(info)
{
case SQL_CB_DELETE:
return "SQL_CB_DELETE";
case SQL_CB_CLOSE:
return "SQL_CB_CLOSE";
case SQL_CB_PRESERVE:
return "SQL_CB_PRESERVE";
default:
sprintf(buf, "unknown (%u)", (unsigned int) info);
return buf;
}
}
int main(int argc, char **argv)
{
int rc;
HSTMT hstmt = SQL_NULL_HSTMT;
SQLUSMALLINT info;
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);
}
/*
* Print out the current SQL_CURSOR_COMMIT_BEHAVIOR and
* SQL_CURSOR_ROLLBACK settings. The result of this test case depends on
* those.
*/
rc = SQLGetInfo(conn, SQL_CURSOR_COMMIT_BEHAVIOR, &info, sizeof(info), NULL);
CHECK_STMT_RESULT(rc, "SQLGetInfo failed", hstmt);
printf("SQL_CURSOR_COMMIT_BEHAVIOR: %s\n", sql_commit_behavior_str(info));
rc = SQLGetInfo(conn, SQL_CURSOR_ROLLBACK_BEHAVIOR, &info, sizeof(info), NULL);
CHECK_STMT_RESULT(rc, "SQLGetInfo failed", hstmt);
printf("SQL_CURSOR_ROLLBACK_BEHAVIOR: %s\n\n", sql_commit_behavior_str(info));
/* Run the test */
testLargeResult(hstmt);
/* Clean up */
test_disconnect();
return 0;
}
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