Conditional Formatting and General Text Formatting

Redash Hacks

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Documented hacks up-to-date are:

Conditional Formatting and General Text Formatting

While Redash doesn't naturally support conditional formatting, this can be bypassed quite easily with some html tags.

    WHEN cat.color IN ('short_hair',
         AND cat_count > 1000 THEN '<div class="bg-success p-10 text-center">count(cat)</div>'
         OR cat_count > 200 THEN '<div class="bg-warning p-10 text-center">count(cat)</div>'
    ELSE '<div class="bg-danger p-10 text-center">count(cat)</div>'
END AS cat_count

In this example we covered different formatting types you can apply in a div:

  1. Colors - green (bg-success), yellow (bg-warning) and red (bg-danger). You can also use bg-info for blue but who wants blue in their tables?
  2. Padding - we used 10 to pad the text just a little bit.
  3. Text alignment - we aligned our cat counts to the center (text-center), by default tables are aligned to the left.

Other styling formats you can use:

  1. Font Size (font-size) - can be pixels (10ox, 20px, 34px and so on), relative (50%, 150%...), textual (large, medium, xx-small..) or HTML tags for headings (h1, h2...).
  2. Headings <h1> and Displays (class = display1) - h1-h6 are heading sizes when h1 is the largest, display is a class you can combine with a heading to get a more stylized look.
  3. Font type (font-family) - change the font, not all fonts are supported in each browser so it's tricky.
  4. Misc- mark (mark), underline (u), bold (strong), italic (em)

You are welcome to try other Bootstrap CSS tricks and share with us.

Clickable URLs in tables

To create clickable links in your table, use this template:

SELECT '' || id  || '/source' AS url, name, created_at
FROM queries
WHERE is_archived = false
AND name != 'New Query'

Please note that || is a PostgreSQL operator/function - for other databases you'll need to use the suitable concat operator.

The results will be clickable links, like in this query in our demo account:

You can also use the anchor tag to show a name instead of the URL:

SELECT '<a href="' || id || '">' || name || '</a>' as name

Images Inside tables

To add images to tables you can use the img tag.

For example:

SELECT cat, '<img src="'|| cat ||'.png" alt="cat" width="'||20||'" height="20";>' AS image
FROM cats

Please note that || is a PostgreSQL operator/function - for other databases you'll need to use the suitable concat operator.

You can view a live example in our demo account.

Default Parameter Value

Schedules and alerts don't handle parameters well so it's needed to create a specific query with the value you want to have a scheduled query and/or and alert for (alerts require scheduled queries anyway) or using filters that run only in the client side while querying all options.

This way you can have an "all" parameter that shows all values, allowing the query to be scheduled and get alerts for.

        WHEN '{{date}}' = 'All' THEN date IS NOT NULL
        ELSE date = '{{date}}'

Kelly (thanks Kelly!) from Hudl shared this in our Slack community.

Adding Tags to Queries

Somewhere in the middle between naming queries with long-tediou-very descriptive names and having fancy clickable tags you can use #tags! Add a #marketing, #devops or #xmas-sales "tag" to your query names and then search for all queries with that #tag.

Same goes for Dashboards (although you can already group them by topics when using the prefix convention, read more here).

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