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/*
* This test case tests for a bug in result set caching, with
* UseDeclareFetch=1, that was fixed. The bug occurred when a cursor was
* closed, due to transaction commit, before any rows were fetched from
* it. That set the "base" of the internal cached rowset incorrectly,
* off by one.
*/
#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;
SQLCHAR charval[100];
SQLLEN len;
int row;
test_connect();
/* Start a transaction */
rc = SQLSetConnectAttr(conn, SQL_ATTR_AUTOCOMMIT, SQL_AUTOCOMMIT_OFF, SQL_IS_UINTEGER);
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 = SQLSetStmtAttr(hstmt, SQL_ATTR_CURSOR_TYPE,
(SQLPOINTER) SQL_CURSOR_STATIC, SQL_IS_UINTEGER);
CHECK_STMT_RESULT(rc, "SQLSetStmtAttr failed", hstmt);
/*
* Begin executing a query
*/
rc = SQLExecDirect(hstmt, (SQLCHAR *) "SELECT g FROM generate_series(1,3) g", SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLExecDirect failed", hstmt);
rc = SQLBindCol(hstmt, 1, SQL_C_CHAR, &charval, sizeof(charval), &len);
CHECK_STMT_RESULT(rc, "SQLBindCol failed", hstmt);
/* Commit. This implicitly closes the cursor in the server. */
rc = SQLEndTran(SQL_HANDLE_DBC, conn, SQL_COMMIT);
if (!SQL_SUCCEEDED(rc))
{
print_diag("failed to commit", SQL_HANDLE_DBC, conn);
exit(1);
}
rc = SQLFetchScroll(hstmt, SQL_FETCH_FIRST, 0);
CHECK_STMT_RESULT(rc, "SQLFetchScroll(FIRST) failed", hstmt);
if (rc == SQL_SUCCESS || rc == SQL_SUCCESS_WITH_INFO)
printf("first row: %s\n", charval);
row = 1;
while (1)
{
rc = SQLFetchScroll(hstmt, SQL_FETCH_NEXT, 0);
if (rc == SQL_NO_DATA)
break;
row++;
if (rc == SQL_SUCCESS || rc == SQL_SUCCESS_WITH_INFO)
printf("row %d: %s\n", row, charval);
else
{
print_diag("SQLFetchScroll failed", SQL_HANDLE_STMT, hstmt);
exit(1);
}
}
rc = SQLFreeStmt(hstmt, SQL_CLOSE);
CHECK_STMT_RESULT(rc, "SQLFreeStmt failed", hstmt);
/* Clean up */
test_disconnect();
return 0;
}
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