function write_data_mssqlnative($table_name)
{
global $db;
$ary_type = $ary_name = array();
$ident_set = false;
$sql_data = '';
// Grab all of the data from current table.
$sql = "SELECT * FROM {$table_name}";
$db->mssqlnative_set_query_options(array('Scrollable' => SQLSRV_CURSOR_STATIC));
$result = $db->sql_query($sql);
$retrieved_data = $db->mssqlnative_num_rows($result);
if (!$retrieved_data) {
$db->sql_freeresult($result);
return;
}
$sql = "SELECT * FROM {$table_name}";
$result_fields = $db->sql_query_limit($sql, 1);
$row = new result_mssqlnative($result_fields);
$i_num_fields = $row->num_fields();
for ($i = 0; $i < $i_num_fields; $i++) {
$ary_type[$i] = $row->field_type($i);
$ary_name[$i] = $row->field_name($i);
}
$db->sql_freeresult($result_fields);
$sql = "SELECT 1 as has_identity\n\t\t\tFROM INFORMATION_SCHEMA.COLUMNS\n\t\t\tWHERE COLUMNPROPERTY(object_id('{$table_name}'), COLUMN_NAME, 'IsIdentity') = 1";
$result2 = $db->sql_query($sql);
$row2 = $db->sql_fetchrow($result2);
if (!empty($row2['has_identity'])) {
$sql_data .= "\nSET IDENTITY_INSERT {$table_name} ON\nGO\n";
$ident_set = true;
}
$db->sql_freeresult($result2);
while ($row = $db->sql_fetchrow($result)) {
$schema_vals = $schema_fields = array();
// Build the SQL statement to recreate the data.
for ($i = 0; $i < $i_num_fields; $i++) {
$str_val = $row[$ary_name[$i]];
// defaults to type number - better quote just to be safe, so check for is_int too
if (is_int($ary_type[$i]) || preg_match('#char|text|bool|varbinary#i', $ary_type[$i])) {
$str_quote = '';
$str_empty = "''";
$str_val = sanitize_data_mssql(str_replace("'", "''", $str_val));
} else {
if (preg_match('#date|timestamp#i', $ary_type[$i])) {
if (empty($str_val)) {
$str_quote = '';
} else {
$str_quote = "'";
}
} else {
$str_quote = '';
$str_empty = 'NULL';
}
}
if (empty($str_val) && $str_val !== '0' && !(is_int($str_val) || is_float($str_val))) {
$str_val = $str_empty;
}
$schema_vals[$i] = $str_quote . $str_val . $str_quote;
$schema_fields[$i] = $ary_name[$i];
}
// Take the ordered fields and their associated data and build it
// into a valid sql statement to recreate that field in the data.
$sql_data .= "INSERT INTO {$table_name} (" . implode(', ', $schema_fields) . ') VALUES (' . implode(', ', $schema_vals) . ");\nGO\n";
$this->flush($sql_data);
$sql_data = '';
}
$db->sql_freeresult($result);
if ($ident_set) {
$sql_data .= "\nSET IDENTITY_INSERT {$table_name} OFF\nGO\n";
}
$this->flush($sql_data);
}
/**
* Seek to given row number
* rownum is zero-based
*/
function sql_rowseek($rownum, &$query_id)
{
global $cache;
if (isset($cache->sql_rowset[$query_id])) {
return $cache->sql_rowseek($rownum, $query_id);
}
$seek = new result_mssqlnative($query_id);
$row = $seek->seek($rownum);
return ($row = $seek->fetch()) ? $row : false;
}