Mysql decimal vs float

All Popular Content Management Systems work with MySQL like WordPress, vBulletin, Drupal, etc. Not just specific to MySQL , the difference between float and decimal types is the way that they represent fractional values. Storing statistical data, do I need. Difference between Decimal, Float and Double in mysql. Decimal , Float and Double All these three Types, can be specified by the following Parameters (size, d).

Where size is the total size of the String, and d represents precision. Some of them are integers, text, varchar and most importantly, date and time and date-time manipulation. Hi, I am designing a table on MySQL 5. For space considerations, am I better off using double, float , or decimal (2)?

I found the documentation, but want to make sure I understand it. Precision is unimportant in my case. Any ideas on the disk space requirements between the different types? A correction to my origial post, the column will actually be decimal ( 2) vs. The Decimal , Double, and Float variable types are different in the way that they store the values.

MySQL permits a nonstandard syntax: FLOAT (M,D) or REAL(M,D) or DOUBLE PRECISION(M,D). The MySQL Manual inform that Decimal Data Type is used for represent exact-number, but like Float Point Data Type, Decimal use rounding case the fractional part is not sufficient. Therefore, what the difference? Silva _____ Novidade no ! So Decimals have much higher precision and are usually used within monetary (financial) applications.

For the Decimal or Numeric data types, SQL Server considers each specific combination of precision and scale as a different data type. DECIMAL (2) and DECIMAL (4) are different data types. MySQL: DECIMAL, NUMERIC, FLOAT, DOUBLE and REAL Data Types.

Make Login and Register Form Step. Float and Real data types do not store exact values for many numbers. The value can be extremely closed. IEEE standard floating point value, equivalent to float (24). Neither should be used for storing monetary values.

Does anyone have any opinions concerning the performance of Float vs decimal data types? For example I have a table that stores balances, turnovers, and currency rates all of which were originally. First question - should I have these all in decimal or float ? I am just running queries and dumping the reults into a webapp.

I would use decimal because float may round the values slightly so it may not show up properly in a search. Float stores data in binary so if you provide decimal data: 1. If you provide data in binary (e.g. using a Java float ) then there will be no loss. Unfortunately MySQL and MS SQL Server use slightly different data types, so you will have to do some mapping to get the correct data after the migration. This chapter describes the most important data types in MySQL and their equivalents or recommended migration targets in SQL Server. Introduction to MySQL DECIMAL data type.

The MySQL DECIMAL data type is used to store exact numeric values in the database. We often use the DECIMAL data type for columns that preserve exact precision e. Example of MySQL format() function using where clause. The following statement will return those books from the book_mast table, whose prices are more than 150.

I need to choose a data type for SQL Server( BigInt vs Decimal ) on the basis of performance and querying (digit number) Stack Exchange Network Stack Exchange network consists of 1QA communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.