What is the main purpose of using CROSS APPLY? I have read (vaguely, through posts on the Internet) that cross apply can be more efficient when selecting over large...
I have two lists in Python: temp1 = ['One', 'Two', 'Three', 'Four'] temp2 = ['One', 'Two'] I want to create a third list with items from the first list...
What is the fastest way to know if a value exists in a list (a list with millions of values in it) and what its index is? I know...
I have a limited exposure to DB and have only used DB as an application programmer. I want to know about Clustered and Non clustered indexes. I googled and...
IT Nursery
I have developed a CRM plugin for a client integrated with WordPress user management and I stored additional information for each user under the wp_usermeta table. However, the client’s...
This question’s answers are a community effort. Edit existing answers to improve this post. It is not currently accepting new answers or interactions. How can you make the experience...
I made a comment yesterday on an answer where someone had used [0123456789] in a regex rather than [0-9] or \d. I said it was probably more efficient to...
What caching plugin configuration do you recommend and why under the following assumptions: full control of the server configuration running WordPress in multi-site/multi-domain mode most domains are not using...
I have read the discussion on the performance of different permalinks on the wp hackers mailinglist, THIS forum and around Google. I could however not really deduce if the...
Python 2.6 introduced the str.format() method with a slightly different syntax from the existing % operator. Which is better and for what situations? Python 3.6 has now introduced another...