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## How do I change the precision of a column in SQL Server?

6 Answers. Just **put decimal(precision, scale)** , replacing the precision and scale with your desired values. I haven’t done any testing with this with data in the table, but if you alter the precision, you would be subject to losing data if the new precision is lower.

## 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.

## How do I change the precision of a column in Oracle?

Most common way is to **create a second column, copy the data**, drop original column and rename former column. The other way is to set the original column to null and then you can use the alter table from above (see Stack Overflow for more details).

## How do you set decimal precision in SQL?

Generally you can define the precision of a number in SQL by **defining it with parameters**. For most cases this will be NUMERIC(10,2) or Decimal(10,2) – will define a column as a Number with 10 total digits with a precision of 2 (decimal places). It can also be declared as DECIMAL(10, 2).

## What is precision in data type?

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.

## Which number has most precision?

a number that is precise but not accurate: 99999.12345678901234567890 . That’s much more precise since it conveys more information. Unfortunately its accuracy is way off since it’s nowhere near the target value. a number that is both accurate and precise: **3.142857143** .

## What is precision for float in SQL?

float is used to store approximate values, not exact values. It has a precision from **1 to 53 digits**.

## What is numeric precision?

Numeric precision refers **to the maximum number of digits that are present in the number**. ie 1234567.89 has a precision of 9. Numeric scale refers to the maximum number of decimal places.

## Is number a datatype 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 .

## What is number precision and scale in Oracle?

The Oracle NUMBER data type has precision and scale. The **precision is the number of digits in a number**. It ranges from 1 to 38. The scale is the number of digits to the right of the decimal point in a number. It ranges from -84 to 127.

## What is number data type?

Numeric data types are **numbers stored in database columns**. These data types are typically grouped by: Exact numeric types, values where the precision and scale need to be preserved. The exact numeric types are INTEGER , BIGINT , DECIMAL , NUMERIC , NUMBER , and MONEY .

## How do you convert to 2 decimal places in SQL?

Select Convert(Numeric(38, 2), Minutes/**60.0**) from …. MySQL: Select Convert(Minutes/60.0, Decimal(65, 2)) from …. The Cast function is a wrapper for the Convert function.

## How do I reduce 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 limit decimal places in SQL?

**SQL Server ROUND() Function**

The ROUND() function rounds a number to a specified number of decimal places. Tip: Also look at the FLOOR() and CEILING() functions.