In WordPress, instead of using relative URL when referring to posts, pages and images used within the site, absolute url is used. This becomes a problem if your development site and production sites are different. All links and images in contents are still referencing the development site even though the site has moved to production. This…
There are a few ways to to it. Here’s a solution using load data.
To calculate running total / balance in a single SQL statment:
When deploying a site (and database) from development to production, when going to the production the site goes back to development. That’s because in WordPress, site URL is defined and saved in database by default. According to the official document, there are several ways to change URL.
When using ‘order by’ clause to sort columns in ascending order, rows with null value comes first. What if the requirement is to sort in ascending order but rows with null values comes last?