What is a SQL variant data type?

What is a SQL variant data type?

The sql_variant data type allows a table column or a variable to hold values of any data type with a maximum length of 8000 bytes plus 16 bytes that holds the data type information, but there are exceptions as noted below. This allows you to have flexibility in the type of data that is stored.

What is data type in SQL example?

SQL data types can be broadly divided into following categories. Numeric data types such as int, tinyint, bigint, float, real, etc. Date and Time data types such as Date, Time, Datetime, etc. Character and String data types such as char, varchar, text, etc.

What is Ntext data type?

The ISO synonym for ntext is national text. text. Variable-length non-Unicode data in the code page of the server and with a maximum string length of 2^31-1 (2,147,483,647). When the server code page uses double-byte characters, the storage is still 2,147,483,647 bytes.

What is XML data type in SQL Server?

The xml data type is a built-in data type in SQL Server and is somewhat similar to other built-in types such as int and varchar. As with other built-in types, you can use the xml data type as a column type when you create a table as a variable type, a parameter type, a function-return type, or in CAST and CONVERT.

Is a spatial data type?

Spatial data represents information about the physical location and shape of geometric objects. These objects can be point locations or more complex objects such as countries, roads, or lakes. SQL Server supports two spatial data types: the geometry data type and the geography data type.

What is Variant data type in Snowflake?

In a Snowflake OBJECT, each key is a VARCHAR, and each value is a VARIANT. Because VARIANT can store any other data type, different values (in different key-value pairs) can have different underlying data types. For example, an OBJECT can hold a person’s name as a VARCHAR and a person’s age as an INTEGER.

How many data types are there in SQL?

In MySQL there are three main data types: string, numeric, and date and time.

Is BLOB a data type in SQL?

A BLOB, or Binary Large Object, is an SQL object data type, meaning it is a reference or pointer to an object. Typically a BLOB is a file, image, video, or other large object. In database systems, such as Oracle and SQL Server, a BLOB can hold as much as 4 gigabytes.

What is difference between text and nText in SQL Server?

Text – Variable-length non-Unicode data with a maximum length of 2^31 – 1 (2,147,483,647) characters. nText – Variable-length Unicode data with a maximum length of 2^30 – 1 (1,073,741,823) characters.

What are common data types in SQL?

Data types in SQL Server are organized into the following categories:

• Exact numerics. Unicode character strings.
• Approximate numerics. Binary strings.
• Date and time. Other data types.
• Character strings.
• bigint. numeric.
• bit. smallint.
• decimal. smallmoney.
• int. tinyint.