It can be a pain to calculate percentile in MySQL. There are no functions for it yet. Here’s a ready made query to do it.
Calculate percentile from frequency or counts in MySQL. E.g, to rank customers based on number of purchases or orders instead of total sales
Here are a few commonly used commands to find current year, current month and current day in MySQL. You can use date format is different variations for it.
What is the difference between using SELECT INTO and INSERT INTO? Both can be used to copy data from one table into another
You can easily copy data into new table in MySQL using SELECT INTO. This helps you create temporary tables quickly.
You may need to copy data from one table into another. You can insert data from one table into another in MySQL.You can use the INSERT INTO SELECT statement
Sometimes you may need to select data from a table and insert into same table in MySQL. You may need to quickly create lot of data for testing.
A bulk insert in MySQL is when you need to insert a lot of records in a table. You may need to do it to quickly create data for testing.
To calculate age from date you can use the following MySQL query. This is useful to find out recency of activity. Just replace with your column names.
Calculating difference between two dates in MySQL is really easy. Here’s how you can do it. Let’s say dt1 and dt2 are 2 columns in table table_name.