Web Reference: After an object type is defined and installed in the schema, you can use it in any PL/SQL block, subprogram, or package. In PL/SQL, you then declare a variable whose data type is the user-defined type or ADT that you just defined. Objects or ADTs follow the usual scope and instantiation rules. Jul 23, 2025 ยท Here, we will explore various methods of declaring variables in PL/SQL, including syntax, examples, and practical use cases. We will cover variable initialization, scope, and the use of variable attributes like %TYPE and %ROWTYPE. var isn't PL/SQL, it's a SQL*Plus command and can only be used in SQL*Plus (maybe in Oracle SQL Developer as well, I don't know). Unlike all other databases T-SQL mixes procedural code and the query language SQL.
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Last Updated: April 8, 2026
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