# How does Decimal work in SQL?

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## How do decimals work in SQL?

MySQL stores DECIMAL values in binary format. … Standard SQL requires that DECIMAL(5,2) be able to store any value with five digits and two decimals, so values that can be stored in the salary column range from -999.99 to 999.99 . In standard SQL, the syntax DECIMAL( M ) is equivalent to DECIMAL( M ,0) .

## What is the data type for DECIMAL in SQL?

SQL General Data Types

Data type Description
BIGINT Integer numerical (no decimal). Precision 19
DECIMAL(p,s) Exact numerical, precision p, scale s. Example: decimal(5,2) is a number that has 3 digits before the decimal and 2 digits after the decimal
NUMERIC(p,s) Exact numerical, precision p, scale s. (Same as DECIMAL)

## How define decimal in SQL Server?

The Basic syntax of Decimal data type in SQL Server

1. p stands for Precision, the total number of digits in the value, i.e. on both sides of the decimal point.
2. s stands for Scale, number of digits after the decimal point.

## What is decimal in SQL Server?

decimal[ (p[ ,s] )] and numeric[ (p[ ,s] )] Fixed precision and scale numbers. When maximum precision is used, valid values are from – 10^38 +1 through 10^38 – 1. The ISO synonyms for decimal are dec and dec(p, s). numeric is functionally identical to decimal.

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## How do you add decimals in SQL?

If you add a decimal place to the numeric literal 1000, SQL Server will see it as a decimal/numeric type number instead of an integer, so all you need to do is CONVERT(DECIMAL(10,3),ti. Rate/1000.0) AS Amount .

## How do you cast decimals in SQL?

Use the CAST() function to convert an integer to a DECIMAL data type. This function takes an expression or a column name as the argument, followed by the keyword AS and the new data type. In our example, we converted an integer (12) to a decimal value (12.00).

## What is the difference between float and decimal data types in SQL?

Decimal data types in Sql Server. Float stores an approximate value and decimal stores an exact value. … In summary, exact values like money should use decimal, and approximate values like scientific measurements should use float.

## What is difference between decimal and numeric in SQL Server?

There is a small difference between NUMERIC(p,s) and DECIMAL(p,s) SQL numeric data type. NUMERIC determines the exact precision and scale. DECIMAL specifies only the exact scale; the precision is equal or greater than what is specified by the coder.

## Can decimal data be negative?

3 Answers. The decimal datatype can store negative numbers as well. So to answer your question, yes you can use the decimal datatype to store negative decimal numbers.

## How do I get the decimal part of a number in SQL Server?

Suppose we have student marks in decimal and we want to split integer and fractional part from it then we can write the query as:

1. DECLARE @Marks DECIMAL(18,2)=70.50.
2. SELECT LEFT(@Marks, CHARINDEX(‘.’, @ …
3. SELECT LEFT(@Marks,CHARINDEX(‘.’,@ …
4. Id INT IDENTITY(1,1),
5. ItemName VARCHAR(100),
6. Price DECIMAL(18,2)
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## Can varchar accept decimals?

3 Answers. The short answer is: No, it will hurt performance. The longer answer: VARCHAR fields are variable length, meaning, that the formatting of the database blocks cannot pre-account for the size of the data filling in there.

## What is decimal data type in MySQL?

In MySQL, the DECIMAL and NUMERIC data types store exact, fixed-point values. In MySQL, NUMERIC is implemented as a DECIMAL, so a NUMERIC and DECIMAL are the same data type. This data type is used when it is important to preserve the exact precision, such as storing money data.