How do you declare a variable with default value?

How do you declare a variable with default value?

To assign a default value to a variable, you use the assignment operator ( := ) or the DEFAULT keyword. In this example, instead of using the assignment operator := , we used the DEFAULT keyword to initialize a variable.

How do you declare a local variable using T SQL?

Variables in SQL procedures are defined by using the DECLARE statement. Values can be assigned to variables using the SET statement or the SELECT INTO statement or as a default value when the variable is declared. Literals, expressions, the result of a query, and special register values can be assigned to variables.

How do you declare a variable in SQL query?

Declaring a variable The DECLARE statement initializes a variable by assigning it a name and a data type. The variable name must start with the @ sign. In this example, the data type of the @model_year variable is SMALLINT . By default, when a variable is declared, its value is set to NULL .

How do you assign a value to a variable in SQL?

To assign a value to a variable, use the SET statement. This is the preferred method of assigning a value to a variable. A variable can also have a value assigned by being referenced in the select list of a SELECT statement.

How do you declare a variable?

To declare a variable is to create the variable. In Matlab, you declare a variable by simply writing its name and assigning it a value. (e.g., ‘jims_age = 21;’). In C, Java you declare a variable by writing its TYPE followed by its name and assigning it a value.

What is default value of a local variable in go?

Local and global variables are initialized to their default value, which is 0; while pointers are initialized to nil….Initializing Local and Global Variables.

How to declare a variable in T-SQL?

A Transact-SQL local variable is an database object that can store a single data value of a specific type. 2. Declare a Transact-SQL Variable. To declare a variable uses the keyword DECLARE, assign a variable name and a data type. DECLARE @MyVariable datatype; 3. Set a Variable Value. After a variable is declared, it gets the default NULL value.

How to assign default value in SQL Server?

In SQL Server 2005 or earlier, you will need to declare the variable and then assign it a value using Set statement. occurs if you are using SQL Server 2005 while assigning default value to local variable.

How to set the value of a variable in SQL?

Set a Variable Value. After a variable is declared, it gets the default NULL value. To assign a value to a variable, use the SET statement.

How to declare variables and set values in variable?

In SQL server SET is used to assign a value to a variable. — Multiple Variable Declaration With Default Value DECLARE @EmployeeName VARCHAR( 50) = ‘Nikunj Satasiya’, @Company VARCHAR( 50 )= ‘Casepoint LLC.’