What is the point of variables in sql?

Question

There is no point because variables are not in sql

Answer 1

SQL also have variables;

[Oracle PL/SQL]
https://www.tutorialspoint.com/plsql/plsql_variable_types.htm

[Microsoft T-SQL]
https://docs.microsoft.com/en-us/sql/t-sql/language-elements/declare-local-variable-transact-sql

[MySQL]
https://dev.mysql.com/doc/en/declare-local-variable.html