# mysql\_stmt\_send\_long\_data

## Syntax

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

* `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.
* `long` - size 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.

Returns zero on success, nonzero if an error occurred.

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


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://mariadb.com/docs/connectors/mariadb-connector-c/api-prepared-statement-functions/mysql_stmt_send_long_data.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.