How do you DECLARE a string in SQL?

How do I DECLARE a string in SQL?

To declare a string variable, use the DECLARE keyword, then type the @variable_name and variable type: char, varchar. To assign a value to a variable, use the keyword SET. The CHAR is a data type with fixed length and loads empty spaces.

How do you DECLARE a variable in 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.

What is DECLARE command in SQL?

DECLARE command is used to DECLARE variable which acts as a placeholder for the memory location. Only once the declaration is made, a variable can be used in the subsequent part of batch or procedure.

Can we use string in SQL?

are used to perform an operation on input string and return an output string. Following are the string functions defined in SQL: ASCII(): This function is used to find the ASCII value of a character.