Database Management Systems
SQLite has a time() function that enables you to return a time value based on a time string and any modifiers.
It returns the time in this format: HH:MM:SS
To use this function, you need to provide a time string, plus any (optional) modifiers. A modifier allows you to change the time, such as add a number of hours, set it to local time, etc
SQLite has a date() function that enables you to return a date value based on a time string and any modifiers.
It returns the date in this format: YYYY-MM-DD
To use this function, you need to provide a time string, plus any (optional) modifiers. A modifier allows you to change the date, such as add a number of days, set it to local time, etc
Below is a list of valid time string formats that you can use in any date and time function in SQLite.
When using the SQLite command line interface, you can use the .databases command to return a list of attached databases. More specifically, it returns the names and file names/location of each attached database.
You can also use the PRAGMA database_list statement to return a list of databases attached to the current database connection.
Below is a list of valid modifiers for date and time functions in SQLite.
By default, the SQLite command line interface displays query results using a pipe-separated list, without column headers.
This might be fine if you’re using the results in an application that doesn’t need the column names, but if you’re just a human, it can make it hard to read the data, especially if there are lots of columns.
Fortunately, there’s a quick way to present the column names in your query results.
Actually, there are at least a couple of ways to do this, and I explain them in this article.