In MySQL, the RAND() function allows you to generate a random number. Specifically, the function returns a random floating-point value v in the range 0 <= v < 1.0.
You can also influence the random number by providing a seed value as an argument.
In MySQL, the ROUND() function allows you to round a number up or down to a given number of decimal places.
The way it works is, you provide the number as an argument, and you have the option of choosing how many decimal places to round the number to. If you don’t specify the number of decimal places, the result will have no decimal places.
In MySQL, the CEILING() function allows you to round a number up to the nearest integer. More specifically, it returns the smallest integer not less than its argument.
You can also use the CEIL() function, which is a synonym for CEILING().
In MySQL, the FLOOR() function allows you to round a number down to the nearest integer. More specifically, it returns the largest integer not larger than its argument.
This article presents two methods for converting a decimal number to its hexadecimal equivalent in MySQL.
More specifically, I present two functions that enable you to do this conversion. The two functions are as follows:
HEX() functionCONV() functionBelow is an explanation of each function.
In MySQL, you can unhex a string using the UNHEX() function. But you can’t unhex a number with that function.
To unhex a number in MySQL, use the CONV() function instead.
The CONV() function allows you to convert numeric values between different numbering systems. For example, you can convert between say decimal and binary, octal to decimal, or, more relevant to this article, between hexadecimal and decimal.
When working with MySQL, you can use the CONV() function to convert a number from one base to another. It takes three arguments; the number to convert, the original base, and the base you want to convert it to.
In MySQL you can use the BIN() function to return a binary representation of a number. This function actually returns a string representation of the binary value.