Useful tips for everyday
Do you put www in front of a web address? It’s actually not necessary to use WWW in URLs. It exists for just one purpose…
Will ORDER BY affect performance? ORDER BY on large tables can be real performance disaster , try to apply the ORDER BY clause on smallest…
How do you count the number of times a number appears in Google sheets? The COUNTIF function in Google Sheets is used to count the…
How do I fix error 550 in Gmail? How do I fix a 550 error? Check for email address typos. Check whether the email IP…
How to define sub sites in WordPress Multisite? Each options define sub site in your WordPress multisite. Check the [prefix]_6_options, site url is blog.maomaochia.com. From…
Why are there no results in SQL Report? I looked in the SQL server profiler if the strings get passed in an unexpected form but…
How many software testing techniques are there? Software testing Techniques allow you to design better cases. There are five primarily used techniques. Boundary value analysis…
How is the NASA Mars rover powered? The Perseverance rover requires electrical power to operate. The dependable flow of electricity for the rover comes from…
What is the difference between R-squared R-squared and multiple R-squared? The fundamental point is that when you add predictors to your model, the multiple Rsquared…
What does S mean in movie rating? sexual situations TV Parental Guidelines may have one or more letters added to the basic rating to let…