pma/templates/table/structure/action_row_in_structure_table.twig

<li class="{{ class }}">
{% if type == 'text'
    or type == 'blob'
    or tbl_storage_engine == 'ARCHIVE'
    or has_field %}
    {{ titles['No' ~ action]|raw }}
{% else %}
    <a rel="samepage" class="ajax add_key print_ignore
        {%- if has_link_class %}
            add_primary_key_anchor
        {%- elseif action == 'Index' %}
            add_index_anchor
        {%- elseif action == 'Unique' %}
            add_unique_anchor
        {%- elseif action == 'Spatial' %}
            add_spatial_anchor
        {%- endif %}" href="tbl_structure.php" data-post="{{ url_query|raw -}}
        &amp;add_key=1&amp;sql_query=
        {{- ('ALTER TABLE ' ~
            Util_backquote(table) ~
            (is_primary ? (primary ? ' DROP PRIMARY KEY,')) ~
            ' ' ~
            syntax ~
            '(' ~
            Util_backquote(row['Field']) ~
            ');')|url_encode -}}
            &amp;message_to_show={{ message|format(row['Field']|e)|url_encode }}">
        {{ titles[action]|raw }}
    </a>
{% endif %}
</li>