Dynamic Columns Functions
Dynamic columns is a feature that allows one to store different sets of columns for each row in a table. It works by storing a set of columns in a blob and having a small set of functions to manipulate it.
| Title | Description |
|---|---|
| COLUMN_ADD | Adds or updates dynamic columns. |
| COLUMN_CHECK | Checks if a dynamic column blob is valid |
| COLUMN_CREATE | Returns a dynamic columns blob. |
| COLUMN_DELETE | Deletes a dynamic column. |
| COLUMN_EXISTS | Checks is a column exists. |
| COLUMN_GET | Gets a dynamic column value by name |
| COLUMN_JSON | Returns a JSON representation of dynamic column blob data |
| COLUMN_LIST | Returns comma-separated list of columns names. |
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https://mariadb.com/kb/en/dynamic-columns-functions/