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## How do I get decimal numbers 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).

## How do I show two digits after decimal in SQL?

1 Answer. This can be achieved with the decimal datatype. See below for an example: declare @num as float; set @**num=5.20**; select convert(decimal(10, 2), @num);

## How do I compare two decimal values in SQL?

Hence, this is equivalent to: declare @num1 decimal(18, 0) = 1.98; **declare @num2 decimal(18, 0) = 2.2**; SQL Server then assigns the values by converting the constants to the appropriate value, and both are being set to “2.”. You need to explicitly set the precision/scale if you want those values to be stored exactly.

## How do I increase decimal places in SQL?

The SQL AVG() function returns the average value with default decimal places. The **CAST()** is used to increase or decrease the decimal places of a value. The CAST() function is much better at preserving the decimal places when converting decimal and numeric data types.

## What is the difference between float and decimal?

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. When multiplying a non integer and dividing by that same number, decimals lose precision while floats do not.

## How do I truncate decimal places in SQL Server?

Overview of SQL TRUNCATE() function

The TRUNCATE() function returns n truncated to d decimal places. If you skip d , then n is truncated to 0 decimal places. If d is a negative number, the function truncates the number n to d digits left to the decimal point.

## How do you set precision in SQL?

2 Answers. In TSQL, you can **specify two different sizes for float, 24 or** 53. This will set the precision to 7 or 15 digits respectively. As a general rule, you can’t specify the number of digits after the decimal point for a floating-point number.

## What is a decimal data type?

The decimal data type is **an exact numeric data type defined by its precision (total number of digits) and scale** (number of digits to the right of the decimal point). For example: … The scale of a decimal value cannot exceed its precision. Scale can be 0 (no digits to the right of the decimal point).

## What is number data type in SQL?

In SQL, numbers are defined as either exact or approximate. The exact numeric data types are **SMALLINT , INTEGER , BIGINT , NUMERIC(p,s) , and DECIMAL(p,s)** . … The approximate numeric data types are FLOAT(p) , REAL , and DOUBLE PRECISION .