Can I explicitly specify ENGINE=InnoDB in WordPress?

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I converted all my tables to InnoDB, but the MySQL server (which I can’t access, as I’m on shared hosting) has MyISAM as the default, so every new table that WordPress creates (e.g. when I add a new site on my multisite) uses the MyISAM engine and I have to alter it manually. Can I somehow set WordPress up to enforce the InnoDB engine when creating new tables?

I know that by default WordPress doesn’t specify anything and lets the table use the default engine, but I’m wondering if there is some plugin where I could add the

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ENGINE=InnoDB

clause to all the CREATE TABLE queries.

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1 comment

  1. If the code creating new tables uses dbDelta() (it should), you can filter the query (see wp-admin/includes/upgrade.php):

    add_filter( 'dbdelta_create_queries', function( Array $queries )
{
    foreach ( $queries as $table => $query )
    {
        if ( FALSE !== stripos( $query, 'CREATE TABLE' ) )
        {
            // change the query here
        }
    }

    return $queries;
});

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