[ Version ( since = "3.4" ) ]
public string? compute_prefix (string key)
Computes the common prefix that is shared by all rows in this that start with key.
If no row matches key, null will be returned. Note that a text column must have been set
for this function to work, see set_text_column for details.
| this |
the entry completion |
| key |
The text to complete for |
|
The common prefix all rows starting with |