What is Smallint data type in SQL?

What is Smallint data type in SQL?

The SMALLINT data type stores small whole numbers that range from –32,767 to 32,767. The maximum negative number, –32,768, is a reserved value and cannot be used. The SMALLINT value is stored as a signed binary integer. Integer columns typically store counts, quantities, and so on.

What is the difference between Int and Smallint in SQL?

INTEGER values have 32 bits and can represent whole numbers from –2 31–1 through 2 31–1. SMALLINT values have only 16 bits. They can represent whole numbers from –32,767 through 32,767.

When should I use Smallint in SQL Server?

If you know that some columns in a table that will have millions of row or even an little table that will FK’ed to multi-million-row that doesn’t need an 4 bytes integer to store their data, but an 2 byte would suffice – use SMALLINT. If values in the range 0-255 is enough, TINYINT.

What is the difference between the numeric data type Tinyint Smallint and int?

Both TINYINT and SMALLINT are exact numeric data types, used for storing integer value….Difference between TINYINT and SMALLINT data type in Sql Server.

Storage Size 1 Byte 2 Bytes
Minimum Value 0 -32,768 (-2^15)
Maximum Value 255 32,767 (2^15-1)

What is the length of Smallint in SQL?

In this article

Data type Range Storage
bigint -2^63 (-9,223,372,036,854,775,808) to 2^63-1 (9,223,372,036,854,775,807) 8 Bytes
int -2^31 (-2,147,483,648) to 2^31-1 (2,147,483,647) 4 Bytes
smallint -2^15 (-32,768) to 2^15-1 (32,767) 2 Bytes
tinyint 0 to 255 1 Byte

Can Smallint have decimals?

It is fastest at running integer calculations. Unsigned SMALLINT provides exact numeric integers from 0 to 65,536. It uses 2 bytes of storage and has 4 digits of decimal precision. It is fast at running integer calculations.

Should I use int or BIGINT?

In any decent sized database you will run into problems with INT at some stage in its lifetime. Use BIGINT if you have to as it will save a lot of hassle further down the line. I have seen companies hit the INT issue after only a year of data and where reseeding was not an option it caused massive downtime.

What is the difference between VARCHAR and nvarchar?

The key difference between varchar and nvarchar is the way they are stored, varchar is stored as regular 8-bit data(1 byte per character) and nvarchar stores data at 2 bytes per character. Due to this reason, nvarchar can hold upto 4000 characters and it takes double the space as SQL varchar.

What is Tinyint data type?

The TINYINT data type is an integer value from 0 to 255. TINYINT is the smallest integer data type and only uses 1 byte of storage. An example usage of TINYINT is a person’s age since no person reaches the age of 255.

How do I use Tinyint in SQL?

To save space in the database, use the smallest data type that can reliably contain all possible values. For example, tinyint would be sufficient for a person’s age because no one lives to be more than 255 years old….In this article.

Data type Range Storage
tinyint 0 to 255 1 Byte

What is difference between numeric and decimal in SQL Server?

There is one notable difference between NUMERIC and DECIMAL in standard SQL. The NUMERIC data type is strict; it enforces the exact precision and scale that you have specified. This is in stark contrast to DECIMAL, which allows more numbers than the stated precision.

What is the difference between int and BigInt in SQL Server?

The int data type is the primary integer data type in SQL Server. The bigint data type is intended for use when integer values might exceed the range that is supported by the int data type. bigint fits between smallmoney and int in the data type precedence chart.

When should I use NVARCHAR in SQL Server?

Use nvarchar when the sizes of the column data entries vary considerably. Use nvarchar(max) when the sizes of the column data entries vary considerably, and the string length might exceed 4,000 byte-pairs.

Which one is best varchar or NVARCHAR?

What are the 5 types of data?

6 Types of Data in Statistics & Research: Key in Data Science

  • Quantitative data. Quantitative data seems to be the easiest to explain.
  • Qualitative data. Qualitative data can’t be expressed as a number and can’t be measured.
  • Nominal data.
  • Ordinal data.
  • Discrete data.
  • Continuous data.

Should I use float or decimal SQL?

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.

Is decimal a valid SQL type?

SQL Server Data Types Fixed precision and scale numbers. Allows numbers from -10^38 +1 to 10^38 –1. The p parameter indicates the maximum total number of digits that can be stored (both to the left and to the right of the decimal point). p must be a value from 1 to 38.

What is difference between Nvarchar and varchar in SQL Server 2008?