decimal to float

There are non-standard data types such as float,double in MySQL, as well as standard data types such as decimal. The difference is that non-standard types, such as float,double, hold approximate values in db, while decimal saves values as strings.

It's always strange why a decimal is added to the pre-defined data type of C #. Isn't float and double enough? I am going to dig it out today. Floating Point Type    Name  CTS Type  De script ion  Significant Figures  Range

There is no myth. Let's talk about decimal's "blind eye" and decimal's blind eye.0x00 Preface In the last article "compromise and trade-offs, deconstruct decimal operations in C #", many of my friends talked about the decimal type in C. In fact, the

Floating point Type name cts Type description significant Figures range (approximate) float system.single 32-bit single-precision floating point 7

It's been weird. Why is a decimal added to the predefined data types of C #, and is it enough to have float and double? Come and dig a hole today. Floating-point type Name CTS Type De script ion Significant figures Range

How to make float keep two decimal places or decimal placeshttp://meryvn.blog.163.com/blog/static/36962664201173010402629/Two methods:Import java.math.*;......Method 1:float F = 34.232323;BigDecimal B = new BigDecimal (f);Float F1 = B.setscale (2,

Decimal (numeric) synonymous for precise storage of numeric valuesfloat and real cannot store values accuratelyThe decimal data type can store up to 38 digits, and all numbers can be placed to the right of the decimal point. The decimal data type

Transferred from: http://www.cnblogs.com/lovewife/articles/2466543.htmlSingle precision refers to a 4-byte floating-point number, which is the floatA double is a 8-byte floating-point number, which is doubleDecimal is a high precisionFloating point

Float,double is prone to error, when precision requirements are higher, it is recommended to use decimal to save, decimal in the MySQL memory is stored as a string, used to define the currency requirements of high precision data. Example Creates a

Single-precision floating-point number with 4 bytes (32bit) for floating-point numbers, using the IEEE754 standard computer floating-point number, in the interior is a binary representation, such as: 7.22 with 32-bit binary is not the case, so it