[jachguate]

Creo que el concepto de "pobre" es algo bastante subjetivo. Habrá que saber si has buscado lo suficiente, o tu busqueda también es "pobre".

¿que le falta a los ejemplos?

quizas lo que busques es la sintaxis completa:

Empezado por sqlhelp

Syntax

CREATE PROCEDURE name
	[(param <datatype> [, param <datatype> …])] 
	[RETURNS <datatype> [, param <datatype> …])]
	AS <procedure_body> [terminator]

<procedure_body> =
	[<variable_declaration_list>] 
	<block>
<variable_declaration_list> = 
	DECLARE VARIABLE var <datatype>; 
	[DECLARE VARIABLE var <datatype>; …]
<block> = 
BEGIN
	<compound_statement> 
	[<compound_statement> …] 
END
<compound_statement> = {<block> | statement;}

<datatype> = SMALLINT
	| INTEGER
	| FLOAT
	| DOUBLE PRECISION
	| {DECIMAL | NUMERIC} [(precision [, scale])]
	| {DATE | TIME | TIMESTAMP)
	| {CHAR | CHARACTER | CHARACTER VARYING | VARCHAR} 
		[(int)] [CHARACTER SET charname] 

| {NCHAR | NATIONAL CHARACTER | NATIONAL CHAR} [VARYING] [(int)]

De esta misma ayuda, extraigo el ejemplo:

Empezado por sqlhelp

Examples The following procedure, SUB_TOT_BUDGET, takes a department number as its input parameter, and returns the total, average, minimum, and maximum budgets of departments with the specified HEAD_DEPT.

/* Compute total, average, smallest, and largest department budget.
*Parameters:
* department id
*
*Returns:
* total budget
* average budget
* min budget
* max budget */

Código SQL [-]
SET TERM !! ;
CREATE PROCEDURE SUB_TOT_BUDGET (HEAD_DEPT CHAR(3))
  RETURNS (tot_budget DECIMAL(12, 2), avg_budget DECIMAL(12, 2),
    min_budget DECIMAL(12, 2), max_budget DECIMAL(12, 2))
  AS
  BEGIN
    SELECT SUM(BUDGET), AVG(BUDGET), MIN(BUDGET), MAX(BUDGET)
      FROM DEPARTMENT
      WHERE HEAD_DEPT = :head_dept
      INTO :tot_budget, :avg_budget, :min_budget, :max_budget;
    EXIT;

END !!

SET TERM ; !!

The following select procedure, ORG_CHART, displays an organizational chart:

/* Display an org-chart.
*
* Parameters:
* --
* Returns:
* parent department
* department name
* department manager
* manager's job title
* number of employees in the department */

Código SQL [-]
CREATE PROCEDURE ORG_CHART
  RETURNS (HEAD_DEPT CHAR(25), DEPARTMENT CHAR(25),
    MNGR_NAME CHAR(20), TITLE CHAR(5), EMP_CNT INTEGER)
  AS
    DECLARE VARIABLE mngr_no INTEGER;
    DECLARE VARIABLE dno CHAR(3);
  BEGIN
    FOR SELECT H.DEPARTMENT, D.DEPARTMENT, D.MNGR_NO, D.DEPT_NO

FROM DEPARTMENT D
      LEFT OUTER JOIN DEPARTMENT H ON D.HEAD_DEPT = H.DEPT_NO
      ORDER BY D.DEPT_NO
      INTO :head_dept, :department, :mngr_no, :dno
    DO
      BEGIN
        IF (:mngr_no IS NULL) THEN
          BEGIN
            MNGR_NAME = '--TBH--';
            TITLE = '';
          END
        ELSE
          SELECT FULL_NAME, JOB_CODE
            FROM EMPLOYEE
            WHERE EMP_NO = :mngr_no
            INTO :mngr_name, :title;
          SELECT COUNT(EMP_NO)

FROM EMPLOYEE
            WHERE DEPT_NO = :dno
            INTO :emp_cnt;
          SUSPEND;
      END

END !!

When ORG_CHART is invoked, for example in the following isql statement:

Código SQL [-]
SELECT * FROM ORG_CHART

it displays the department name for each department, which department it is in, the department manager's name and title, and the number of employees in the department.

HEAD_DEPT               	DEPARTMENT 			MGR_NAME 		TITLE 	EMP_CNT
=====================    	===================		================	====	=======
				Corporate Headquarters  	Bender, Oliver H. 	CEO 	2
Corporate Headquarters  	Sales and Marketing 		MacDonald, Mary S.	VP	2 
Sales and Marketing     	Pacific Rim Headquarters 	Baldwin, Janet 	Sales	2 
Pacific Rim Headquarters 	Field Office: Japan 		Yamamoto, Takashi 	SRep 	2 
Pacific Rim Headquarters 	Field Office: Singapore 	--TBH--				0

¿es suficiente?

¿Buscas por algun tema en particular?
Será mejor que lo aclares, no te parece. Quizas mi respuesta siga siendo pobre para tus intereses, quizas tu forma de plantear lo que buscas sea el origen de eso.

Hasta luego.