Oracle Function Call Methods Explained

1 year ago
Liam
1 minute

In Oracle, functions can be invoked in two ways:

  1. Using functions in SQL statements: You can use functions in the list of columns in the SELECT statement, for example:
SELECT function_name(arguments) FROM table_name;
  1. Calling a function in PL/SQL code: You can use a function in a PL/SQL block, for example:
DECLARE
    variable_name datatype;
BEGIN
    variable_name := function_name(arguments);
    -- 其他操作
END;

In both cases, you need to pass the function name and parameters to the function. The function name serves as the identifier of the function, and the parameters are the values or variables passed to the function. Based on the function’s definition, you can determine the required parameter types and quantity.

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