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cheat-sheet articles are about code snippets that I need every once in a while, and which I constantly forget about.

The following query lists all tables within a MySQL instance along with their row counts and sizes in MiB:

SELECT
     table_schema as `database`,
     table_name as `table`,
     table_rows as `rows`,
     ROUND(((data_length + index_length) / 1024 / 1024), 2) `size_mib`
FROM information_schema.tables
ORDER BY (data_length + index_length) DESC;

If you happen to have two remotes for your git repository—e.g. one at GitHub and one on a private server—you might want to git push your changes to both remotes at once.

To achieve this, you can leverage Git’s ability to have multiple push URLs for a remote. Create a new remote, e.g. named all, and set both remotes’ URLs as push URLs:

git remote add all <remote_url1>
git remote set-url all --add --push <remote_url1>
git remote set-url all --add --push <remote_url2>

Pushing the master branch to both remotes is now as easy as running:

git push all master

Note: of course you could just set both remote URLs as push URLs for origin. However, by creating a new remote for this purpose, you can still push to any remote separately if you want.

The following Sass function converts pixels to rem:

@function px-rem($size, $base: 16px) {
    @if (unitless($size)) {
        $size: $size * 1px;
    }
    @if (unitless($base)) {
        $base: $base * 1px;
    }
    @return 1rem * ($size / $base);
}

The $size argument can be provided either with or without a px unit, for example:

font-size: px-rem(18px);   /* 1.125rem */
line-height: px-rem(24);   /* 1.5rem */

You can provide a second argument to px-rem() if your base font size is not 16 pixels.