---
name: "mariadb_dyncol_column_count"
section: "3"
platform: "linux"
package: "mariadb"
version: "13.0.2-2"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/mariadb_dyncol_column_count"
---

# mariadb\_dyncol\_column\_count(3)

### Name

mariadb\_dyncol\_column\_count - Get number of columns in dynamic column blob ## Synopsis

-

  ```
  #include <mariadb_dyncol.h>
  enum enum_dyncol_func_result
  mariadb_dyncol_column_count(DYNAMIC_COLUMN *str,
                              unsigned int *column_count);
  ```

### Description

Gets the number of columnns in a dynamic column blob.

### Parameter

- •

  `*str` - A pointer to a `DYNAMIC_COLUMN` structure

- •

  `column_count` - An unsigned integer pointer where the number of columns will be stored.

### Return value

Returns `ER_DYNCOL_OK` on success, otherwise error.

### Notes

- •

  `mariadb_dyncol_column_count()` doesn’t count NULL values.

### See also

- •

  Dynamic Column Error Codes