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 .