> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/connectors/mariadb-connector-c/api-prepared-statement-functions/mysql_stmt_send_long_data.md).

# mysql\_stmt\_send\_long\_data

## Syntax

```c
my_bool mysql_stmt_send_long_data(MYSQL_STMT * stmt,
                                  unsigned int param_number,
                                  const char * data,
                                  unsigned long length);
```

## Parameter

* `stmt` - a statement handle, which was previously allocated by [mysql\_stmt\_init()](/docs/connectors/mariadb-connector-c/api-prepared-statement-functions/mysql_stmt_init.md).
* `param_no` - indicates which parameter to associate the data with. Parameters are numbered beginning with 0.
* `data` - a buffer containing the data to send.
* `length` - size, in bytes, of the data buffer.

## Description

Allows sending parameter data to the server in pieces (or chunks), e.g. if the size of a blob exceeds the size of [max\_allowed\_packet](/docs/server/server-management/variables-and-modes/server-system-variables.md#max_allowed_packet). This function can be called multiple times to send the parts of a character or binary data value for a column, which must be one of the [TEXT](/docs/server/reference/data-types/string-data-types/text.md) or [BLOB](/docs/server/reference/data-types/string-data-types/blob.md) datatypes.

## Return Value

Returns zero on success, nonzero if an error occurred.

{% hint style="info" %}

* `mysql_stmt_send_long_data()` must be called before [mysql\_stmt\_execute()](https://github.com/mariadb-corporation/mariadb-connector-c/wiki/mysql_stmt_execute).
* bound variables for this column will be ignored when calling [mysql\_stmt\_execute()](https://github.com/mariadb-corporation/mariadb-connector-c/wiki/mysql_stmt_execute).
  {% endhint %}

## See Also

* [mysql\_stmt\_execute()](/docs/connectors/mariadb-connector-c/api-prepared-statement-functions/mysql_stmt_execute.md)

{% @marketo/form formId="4316" %}