ORACLE table valued function - sql

Question

I'm in the process of migrating from MS SQL Server to Oracle and I'm struggling with a simple table-valued function:
CREATE TABLE Department (
Id NUMBER GENERATED BY DEFAULT ON NULL AS IDENTITY,
Name VARCHAR(64) NOT NULL,
PRIMARY KEY (Id)
);
/
CREATE TABLE Employee (
Id NUMBER GENERATED BY DEFAULT ON NULL AS IDENTITY,
PRIMARY KEY (Id),
DepartmentId INT NOT NULL REFERENCES Department(Id),
FirstName VARCHAR(64) NOT NULL,
LastName VARCHAR(64) NOT NULL,
Email VARCHAR(64) NULL
);
/
CREATE TYPE AType AS OBJECT (Department VARCHAR(64), Employee VARCHAR(64));
/
CREATE TYPE ATypeCol AS TABLE OF AType;
/
CREATE OR REPLACE FUNCTION fEmployee(dep IN VARCHAR(64))
RETURN ATypeCol PIPELINED IS
BEGIN
FOR i IN (SELECT Department.Name, Employee.FirstName || ' ' || Employee.LastName
FROM Employee JOIN Department ON DepartmentId = Department.Id
WHERE Department.Name = dep) LOOP
PIPE ROW(AType(i.Department, i.Employee));
END LOOP;
RETURN;
END;
/
SELECT * FROM TABLE(fEmployee('IT'));
/
However it fails with
FUNCTION FEMPLOYEE compiled
Errors: check compiler log
Error starting at line 94 in command:
SELECT * FROM TABLE(fEmployee('IT'))
Error at Command Line:94 Column:21
Error report:
SQL Error: ORA-06575: Package or function FEMPLOYEE is in an invalid state
06575. 00000 - "Package or function %s is in an invalid state"
*Cause: A SQL statement references a PL/SQL function that is in an
invalid state. Oracle attempted to compile the function, but
detected errors.
*Action: Check the SQL statement and the PL/SQL function for syntax
errors or incorrectly assigned, or missing, privileges for a
referenced object.
Any help is appreciated.

Answer 1

CREATE OR REPLACE FUNCTION fEmployee (
dep IN VARCHAR
)
RETURN ATypeCol PIPELINED IS
BEGIN
FOR i IN (SELECT Department.Name, Employee.FirstName || ' ' || Employee.LastName Employee
FROM Employee JOIN Department ON DepartmentId = Department.Id
WHERE Department.Name = dep) LOOP
PIPE ROW(AType(i.Name, i.Employee));
END LOOP;
RETURN;
END;
Formal parameter must not have scale/precision. Also, you should specify correct aliases in cursor.
Please use SELECT * FROM USER_ERRORS WHERE NAME = ''
or "show error" SQL*Plus command to get the information about compilliation errors.