Useful tips for everyday
How do I join two tables in common column? FROM table1 LEFT JOIN table2 ON table1.matching_column = table2.matching_column; table1: First table. table2: Second table matching_column:…
Can you AirPlay on guest network? This IP address is accessible from the guest network (explicitly set under Guest Control), but Airplay still only works…
What database does craft CMS use? MySQL This is only used by MySQL. What is the difference between utf8 and utf8mb4? The difference between utf8…
How do I create a sub column in a table? Click on the cell in which you typed the column header text (the first cell…
What is logical line? A logical line is what Python sees as a single statement. Python implicitly assumes that each physical line corresponds to a…
How do I remove AMP from URL? You can remove the “platform/amp/” in the middle or the “www.google.com/amp/s/” and “cdn.ampproject.org” before the regular URL or…
When would you use a snowflake schema instead of a star schema? If a single dimension requires more than one table, it’s better to use…
How many AA batteries do I need for 3V? two AA batteries Battery Voltage Not all batteries are created equal, make sure the voltage is…
Are package names case sensitive? Package names are written in all lower case to avoid conflict with the names of classes or interfaces. Companies use…
How is the resolution of a digital image determined? The resolution of a digital photo is expressed in terms of “megapixels” which is total number…