- **Note:** User-defined variables do not require declaration. It's important to differentiate between local variables and user-defined variables, as their scoping rules and use cases differ. Local ...

Oracle SQL*Plus has a very useful subparameter to the column parameter called NEW_VALUE. The NEW_VALUE directive allows you to store data retrieved from an Oracle table as a variable inside the ...

There are different approaches that try to simulate variable arguments. However, since Oracle 8, there is a better method that developers often don't consider: using a simple VARRAY to wrap the ...

What are the advantages/disadvantages of using global variables in PL/SQL packages? I have created tons of packages and stored procedures, but have never used global variables.Any insight or links ...

The undeclared_variable_bug.sql file contains the erroneous SQL query, while undeclared_variable_solution.sql shows the corrected version with proper variable declaration and initialization. This ...

There are various ways of using global variables in Microsoft SQL Server 2000 DTS Designer tasks. This article, one in a series, looks into their role in exchanging data between packages, using ...