![]() To do this, I use the modulo operator (%) to determine the remainder after the division. The next step is to reduce the fraction to its lowest terms. This value is calculated by determining the number of decimal places to the right of the decimal point. Next, I need to determine the multiple to use for my numerator and denominator. SET = CASE WHEN > 0 THEN CONVERT(VARCHAR, ELSE '' END + ' ' + CONVERT(VARCHAR, + '/' + CONVERT(VARCHAR, = first thing the udf_ConvertToFraction function does is store the input value as separate whole number and decimal number values. continue reducing numerator and denominator until one ![]() AS long AS both numbers are even numbers, keep reducing them. The functionīelow is the script for the user-defined function that accepts a decimal value and converts that number to its fractional representation. This becomes increasingly complicated when presented with more complex decimals, such as 5.234327. However, you then need to put the fraction into its lowest terms. 25 by 100, which gives you the fraction 25/100. When converting from a decimal value to a string representation of the fraction of that value, it becomes a bit more complex.įor example, if you need to convert the decimal 5.25 to the fraction 5 ¼, where do you start to do the conversion? The mathematical rule is to multiply. You can typically use the built-in CAST or CONVERT functions to do the conversions for you. Converting numbersĬonverting numbers to or from string values in SQL Server is fairly simple. Here’s how you can write a TSQL user-defined function to convert a floating point decimal number into a fractional representation of the same number. At first glance, it seemed reasonably simple, but after digging into the actual code a bit, I realized it was rather challenging. I recently worked on an interesting problem that involved converting a decimal number to a fraction value in SQL Server. Then put the result over the denominator.Convert numbers to fractions using SQL ServerĭBA Tim Chapman shows how to write a TSQL user-defined function to convert a floating point decimal number into a fractional representation of the same number. To do this, multiply the whole part by the denominator of the fractional part. ![]() The first step to converting a mixed number to a fraction is to convert the whole number to a fraction. Step One: Convert the Whole Number to a Fraction Follow these two easy steps to convert a mixed number to an improper fraction. ![]() Since a number can be represented in either mixed number form or improper fraction form, you may need to convert between the two. A proper fraction, on the other hand, has a numerator that is smaller than the denominator. A mixed number has three parts: the whole number, the top number of the fraction (called the numerator), and the bottom number of the fraction (called the denominator).Ī mixed number is a number that can be converted to a fraction that, when simplified, has a numerator larger than the denominator. How to Convert a Mixed Number to an Improper FractionĪ mixed number is a number that has both a whole number and a proper fraction. ![]()
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