In PostgreSQL, the pi() function returns the number π.
π constant is a mathematical constant. It is defined as the ratio of a circle’s circumference to its diameter.
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How the Degrees() Function Works in PostgreSQL
In PostgreSQL, the degrees() function converts from radians to degrees.
The radian is the SI (International System of Units) unit for measuring angles. One radian is just under 57.3 degrees, and a full circle has just over 6.28 radians (2π).
Continue readingHow the Radians() Function Works in PostgreSQL
In PostgreSQL, the radians() function converts from degrees to radians.
The radian is the SI (International System of Units) unit for measuring angles. One radian is just under 57.3 degrees, and a full circle has just over 6.28 radians (2π).
Continue readingHow Trunc() Works in PostgreSQL
In PostgreSQL, the trunc() function truncates a number.
More specifically, it truncates the number either toward zero, or to a specific number of decimal places.
Continue readingHow Ceiling() Works in PostgreSQL
In PostgreSQL, the ceiling() function is used for rounding a number up to the nearest integer.
It’s similar to round(), except that it only rounds up. The round() function will round up or down as required.
It’s also similar to floor(), except that floor() rounds down instead of up.
How Floor() Works in PostgreSQL
In PostgreSQL, the floor() function is used for rounding a number down to the nearest integer.
It’s basically the opposite of ceiling(), which rounds a number up.
It’s also similar to round(), except that it only rounds down. The round() function will round up or down as required.
How Round() Works in PostgreSQL
In PostgreSQL, the round() function is used for rounding a number.
The function can work in one of two ways, depending on how you use it. You can make it round the number to the nearest integer, or to a specified number of decimal places.
This is determined by the number of arguments you pass to the function when you call it.
Continue readingHow age() Works in PostgreSQL
In Postgres, the age() function returns the age based on two timestamp or date variables.
The result is returned using years and months, rather than just days.
For example, a result might look like this: 3 years 2 mons 30 days.
Continue readingHow to_char() Works in PostgreSQL
In Postgres, to_char() is a data type formatting function that converts its first argument to a string.
The format of the string is determined by the second argument.
The to_char() function can be used to do the following conversions:
- time stamp to string
- interval to string
- integer to string
- real/double precision to string
- numeric to string
How iif() Works in SQLite
In SQLite, iif() is a conditional function that returns the second or third argument based on the evaluation of the first argument.
It’s logically equivalent to CASE WHEN X THEN Y ELSE Z END.
iif() is an abbreviation for Immediate IF.
The iif() function was introduced in SQLite 3.32.0, which was released on 22 May 2020.