services.wordpress.sites.<name>.database.tablePrefix

The $table_prefix is the value placed in the front of your database tables. Change the value if you want to use something other than wp_ for your database prefix. Typically this is changed if you are installing multiple WordPress blogs in the same database.

See https://codex.wordpress.org/Editing_wp-config.php#table_prefix.

Type
string
Default
"wp_"
Declared
<nixpkgs/nixos/modules/services/web-apps/wordpress.nix>