# How do you change decimal places in SQL?

Dec 15, 2020

## How do you change 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.

### How do I display decimal values in SQL?

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.

#### How do you put decimals in the right place?

If a number has a decimal point , then the first digit to the right of the decimal point indicates the number of tenths. For example, the decimal 0.3 is the same as the fraction 310 . The second digit to the right of the decimal point indicates the number of hundredths.

How do I compare two decimal values in SQL?

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 truncate a column in SQL?

ALTER TABLE tableName DROP COLUMN columnName ; ALTER TABLE tableName DROP COLUMN columnName ; Example 1: Let us DROP the gender column from our DataFlair_info database. We can see the gender column is no longer available in our database.

## 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 do you remove numbers after 2 decimal places in SQL?

SQL TRUNCATE

1. TRUNCATE(n, d)
2. ROUND(n,d, f)
3. SELECT TRUNCATE(123.4567,2);
4. SELECT TRUNCATE(123.4567,-2);
5. SELECT department_name, TRUNCATE(AVG(salary),0) average_salary FROM employees e INNER JOIN departments d ON d.department_id = e.department_id GROUP BY department_name ORDER BY average_salary;;

#### How to round in SQL?

If you’d like to round a floating-point number to a specific number of decimal places in SQL, use the ROUND function. The first argument of this function is the column whose values you want to round; the second argument is optional and denotes the number of places to which you want to round.

How do you round numbers in SQL?

To round a number in MS SQL use the ROUND() function. This function takes two parameters, the first is the number to be rounded and the second is the number of decimal places to round the number to. Here is an example of rounding the numbers in a column to the nearest whole integer. Add new comment.

What is Precision Scale in SQL?

Precision is the number of digits in a number. Scale is the number of digits to the right of the decimal point in a number. For example, the number 123.45 has a precision of 5 and a scale of 2. In SQL Server, the default maximum precision of numeric and decimal data types is 38.