void
print_result_meta_series(HSTMT hstmt,
SQLSMALLINT *colids,
SQLSMALLINT numcols)
{
int i;
printf("Result set metadata:\n");
for (i = 0; i < numcols; i++)
{
SQLRETURN rc;
SQLCHAR colname[50];
SQLSMALLINT colnamelen;
SQLSMALLINT datatype;
SQLULEN colsize;
SQLSMALLINT decdigits;
SQLSMALLINT nullable;
rc = SQLDescribeCol(hstmt, colids[i],
colname, sizeof(colname),
&colnamelen,
&datatype,
&colsize,
&decdigits,
&nullable);
if (!SQL_SUCCEEDED(rc))
{
print_diag("SQLDescribeCol failed", SQL_HANDLE_STMT, hstmt);
return;
}
printf("%s: %s(%u) digits: %d, %s\n",
colname, datatype_str(datatype), (unsigned int) colsize,
decdigits, nullable_str(nullable));
}
}
int main(int argc, char **argv)
{
SQLRETURN rc;
HSTMT hstmt = SQL_NULL_HSTMT;
char param1[20] = { 1, 2, 3, 4, 5, 6, 7, 8 };
SQLLEN cbParam1;
SQLSMALLINT colcount;
SQLSMALLINT dataType;
SQLULEN paramSize;
SQLSMALLINT decDigits;
SQLSMALLINT nullable;
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);
}
/**** Query with a bytea param ****/
/* Prepare a statement */
rc = SQLPrepare(hstmt, (SQLCHAR *) "SELECT id, t FROM byteatab WHERE t = ?", SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLPrepare failed", hstmt);
/* bind param */
cbParam1 = 8;
rc = SQLBindParameter(hstmt, 1, SQL_PARAM_INPUT,
SQL_C_BINARY, /* value type */
SQL_BINARY, /* param type */
20, /* column size */
0, /* dec digits */
param1, /* param value ptr */
0, /* buffer len */
&cbParam1 /* StrLen_or_IndPtr */);
CHECK_STMT_RESULT(rc, "SQLBindParameter failed", hstmt);
/* Test SQLNumResultCols, called before SQLExecute() */
rc = SQLNumResultCols(hstmt, &colcount);
CHECK_STMT_RESULT(rc, "SQLNumResultCols failed", hstmt);
printf("# of result cols: %d\n", colcount);
/* Execute */
rc = SQLExecute(hstmt);
CHECK_STMT_RESULT(rc, "SQLExecute failed", hstmt);
/* Fetch result */
print_result(hstmt);
rc = SQLFreeStmt(hstmt, SQL_CLOSE);
CHECK_STMT_RESULT(rc, "SQLFreeStmt failed", hstmt);
/*** Test SQLBindParameter with SQLExecDirect ***/
printf("\nTesting SQLBindParameter with SQLExecDirect...\n");
/* bind param */
strcpy(param1, "bar");
cbParam1 = SQL_NTS;
rc = SQLBindParameter(hstmt, 1, SQL_PARAM_INPUT,
SQL_C_CHAR, /* value type */
SQL_CHAR, /* param type */
20, /* column size */
0, /* dec digits */
param1, /* param value ptr */
0, /* buffer len */
&cbParam1 /* StrLen_or_IndPtr */);
CHECK_STMT_RESULT(rc, "SQLBindParameter failed", hstmt);
rc = SQLExecDirect(hstmt, (SQLCHAR *) "SELECT 'foo' UNION ALL SELECT ?", SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLExecDirect failed", hstmt);
print_result(hstmt);
rc = SQLFreeStmt(hstmt, SQL_CLOSE);
CHECK_STMT_RESULT(rc, "SQLFreeStmt failed", hstmt);
/*** Test SQLDescribeParam ***/
printf("\nTesting SQLDescribeParam...\n");
rc = SQLFreeStmt(hstmt, SQL_RESET_PARAMS);
CHECK_STMT_RESULT(rc, "SQLFreeStmt failed", hstmt);
/* Prepare a statement */
rc = SQLPrepare(hstmt, (SQLCHAR *) "SELECT id, t FROM testtab1 WHERE id = ?", SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLPrepare failed", hstmt);
rc = SQLDescribeParam(hstmt, 1, &dataType, ¶mSize, &decDigits, &nullable);
CHECK_STMT_RESULT(rc, "SQLDescribeParams failed", hstmt);
printf("Param 1: type %s; size %u; dec digits %d; %s\n",
datatype_str(dataType), (unsigned int) paramSize, decDigits, nullable_str(nullable));
/* bind param */
strcpy(param1, "3");
cbParam1 = SQL_NTS;
rc = SQLBindParameter(hstmt, 1, SQL_PARAM_INPUT,
SQL_C_CHAR, /* value type */
SQL_CHAR, /* param type */
20, /* column size */
0, /* dec digits */
param1, /* param value ptr */
0, /* buffer len */
&cbParam1 /* StrLen_or_IndPtr */);
CHECK_STMT_RESULT(rc, "SQLBindParameter failed", hstmt);
/* Test SQLNumResultCols, called before SQLExecute() */
rc = SQLNumResultCols(hstmt, &colcount);
CHECK_STMT_RESULT(rc, "SQLNumResultCols failed", hstmt);
printf("# of result cols: %d\n", colcount);
/* Execute */
rc = SQLExecute(hstmt);
CHECK_STMT_RESULT(rc, "SQLExecute failed", hstmt);
/* Fetch result */
print_result(hstmt);
rc = SQLFreeStmt(hstmt, SQL_CLOSE);
CHECK_STMT_RESULT(rc, "SQLFreeStmt failed", hstmt);
/* Clean up */
test_disconnect();
return 0;
}