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DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 FUNCTION `add_bus_day`(in_date DATE, num_days INT) RETURNS date
BEGIN  
    DECLARE v_future_day DATE;
-- 
    SELECT TIMESTAMPADD(DAY, num_days + FLOOR((DAYOFWEEK(in_date) + (num_days*7/5)) / 7) * 2, in_date)  
           INTO v_future_day;
    RETURN v_future_day;
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/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
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DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 FUNCTION `hello`(input VARCHAR(20)) RETURNS varchar(30) CHARSET latin1
RETURN CONCAT('Hello ', input) */;;
DELIMITER ;
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/*!50003 DROP FUNCTION IF EXISTS `hello2` */;
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/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
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DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 FUNCTION `hello2`(input VARCHAR(20)) RETURNS varchar(30) CHARSET latin1
BEGIN
    DECLARE v_string VARCHAR(30);
    SET     v_string = CONCAT('Hello ', input);
    RETURN  v_string;
END */;;
DELIMITER ;
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/*!50003 DROP FUNCTION IF EXISTS `last_friday` */;
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/*!50003 SET collation_connection  = latin1_swedish_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = '' */ ;
DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 FUNCTION `last_friday`(in_date DATE) RETURNS date
BEGIN
    DECLARE v_last_friday DATE;
    SET v_last_friday =  
        CASE DAYOFWEEK(LAST_DAY(NOW())) 
            WHEN 1 THEN DATE_SUB(LAST_DAY(NOW()), INTERVAL 2 DAY)	
            WHEN 2 THEN DATE_SUB(LAST_DAY(NOW()), INTERVAL 3 DAY)	
            WHEN 3 THEN DATE_SUB(LAST_DAY(NOW()), INTERVAL 4 DAY)	
            WHEN 4 THEN DATE_SUB(LAST_DAY(NOW()), INTERVAL 5 DAY)	
            WHEN 5 THEN DATE_SUB(LAST_DAY(NOW()), INTERVAL 6 DAY)	
            WHEN 6 THEN DATE_SUB(LAST_DAY(NOW()), INTERVAL 0 DAY)	
            WHEN 7 THEN DATE_SUB(LAST_DAY(NOW()), INTERVAL 1 DAY)	
    END;
    RETURN v_last_friday;
END */;;
DELIMITER ;
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/*!50003 SET character_set_results = @saved_cs_results */ ;
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/*!50003 DROP FUNCTION IF EXISTS `last_friday2` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = latin1 */ ;
/*!50003 SET character_set_results = latin1 */ ;
/*!50003 SET collation_connection  = latin1_swedish_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = '' */ ;
DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 FUNCTION `last_friday2`(in_date DATE) RETURNS date
BEGIN
    DECLARE v_last_day    DATE;		
    DECLARE v_day_offset  INT;		
    DECLARE v_last_friday DATE;
-- 
    SELECT LAST_DAY(in_date)     into v_last_day;	
    SELECT DAYOFWEEK(v_last_day) into v_day_offset;	
-- 
    SET v_day_offset = IF(v_day_offset>=6, v_day_offset-6, v_day_offset+1);   
    SELECT TIMESTAMPADD(DAY, -v_day_offset , v_last_day) into v_last_friday;
    RETURN v_last_friday;
END */;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `get_student` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = latin1 */ ;
/*!50003 SET character_set_results = latin1 */ ;
/*!50003 SET collation_connection  = latin1_swedish_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = '' */ ;
DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 PROCEDURE `get_student`(param_student_id INT)
BEGIN
    DECLARE v_fname	VARCHAR(30); 		--  local variables
    DECLARE v_lname	VARCHAR(30); 
    DECLARE v_ssn	VARCHAR(30); 
-- 
    SELECT fname, lname, ssn 
      INTO v_fname, v_lname, v_ssn
      FROM student
     WHERE student_id = param_student_id; 
-- 
    SELECT v_fname, v_lname, v_ssn;		--  select is inside the proc 
END */;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `get_student2` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = latin1 */ ;
/*!50003 SET character_set_results = latin1 */ ;
/*!50003 SET collation_connection  = latin1_swedish_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = '' */ ;
DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 PROCEDURE `get_student2`(param_student_id INT)
BEGIN
    SELECT fname, lname, ssn 
      INTO  @v_fname, @v_lname, @v_ssn		--  global variables
      FROM student
     WHERE student_id=param_student_id; 
END */;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `median` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = latin1 */ ;
/*!50003 SET character_set_results = latin1 */ ;
/*!50003 SET collation_connection  = latin1_swedish_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = '' */ ;
DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 PROCEDURE `median`()
BEGIN 
    SELECT FLOOR(COUNT(*)/2) INTO @offset FROM payment;		
-- 
    PREPARE MedianStmt FROM 
        "SELECT * FROM payment					  
         ORDER BY amount					  
         LIMIT ?,1"; 
-- 
    EXECUTE MedianStmt USING @offset; 
-- 
    DEALLOCATE PREPARE MedianStmt; 
END */;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `proc_1a` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = latin1 */ ;
/*!50003 SET character_set_results = latin1 */ ;
/*!50003 SET collation_connection  = latin1_swedish_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = '' */ ;
DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 PROCEDURE `proc_1a`()
BEGIN
    INSERT INTO student
           (student_id,lname,fname,ssn,sex)
    VALUES (null,'Sultan','Sam','000-01-0026','M');
END */;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `proc_1b` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = latin1 */ ;
/*!50003 SET character_set_results = latin1 */ ;
/*!50003 SET collation_connection  = latin1_swedish_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = '' */ ;
DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 PROCEDURE `proc_1b`(last VARCHAR(20), first VARCHAR(20))
BEGIN
    UPDATE student
    SET   fname=first
    WHERE lname=last;
END */;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `proc_1c` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = latin1 */ ;
/*!50003 SET character_set_results = latin1 */ ;
/*!50003 SET collation_connection  = latin1_swedish_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = '' */ ;
DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 PROCEDURE `proc_1c`( p_id INT )
BEGIN
        DECLARE i INT DEFAULT 1;        
        SET autocommit=0;
        DROP TABLE IF EXISTS test_table;            
        CREATE TABLE test_table 
        (
                id   INT PRIMARY KEY,
                data VARCHAR(30)
        )
        ENGINE=innodb;
        WHILE (i<=10) DO
                INSERT INTO test_table VALUES(i,CONCAT("record ",i));
                SET i=i+1;
        END WHILE;  
        SET i=p_id;
        UPDATE test_table                           
           SET data=CONCAT("I updated row ",i)
         WHERE id=i;
        DELETE FROM test_table                       
         WHERE id>i; 
END */;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `proc_2a` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = latin1 */ ;
/*!50003 SET character_set_results = latin1 */ ;
/*!50003 SET collation_connection  = latin1_swedish_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = '' */ ;
DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 PROCEDURE `proc_2a`()
BEGIN
    SELECT 'Hello World, this is my first procedure' AS "Greeting";
END */;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `proc_2b` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = latin1 */ ;
/*!50003 SET character_set_results = latin1 */ ;
/*!50003 SET collation_connection  = latin1_swedish_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = '' */ ;
DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 PROCEDURE `proc_2b`()
BEGIN
    SELECT 'total number of students', COUNT(*)
      FROM student
     WHERE fname = 'David';
END */;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `proc_2c` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = latin1 */ ;
/*!50003 SET character_set_results = latin1 */ ;
/*!50003 SET collation_connection  = latin1_swedish_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = '' */ ;
DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 PROCEDURE `proc_2c`(id_param INT)
BEGIN
    SELECT student_id, fname, lname, sex
      FROM student
     WHERE student_id >= id_param;
END */;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `proc_2d` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = latin1 */ ;
/*!50003 SET character_set_results = latin1 */ ;
/*!50003 SET collation_connection  = latin1_swedish_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = '' */ ;
DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 PROCEDURE `proc_2d`(IN lname_param VARCHAR(20))
BEGIN
    SELECT *
      FROM student
     WHERE lname like lname_param
       AND sex = 'M';
END */;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `proc_3a` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = latin1 */ ;
/*!50003 SET character_set_results = latin1 */ ;
/*!50003 SET collation_connection  = latin1_swedish_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = '' */ ;
DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 PROCEDURE `proc_3a`()
BEGIN
    DECLARE text_string   VARCHAR(50);
    DECLARE student_count INTEGER;
-- 
    SELECT 'total number of students', COUNT(*)
      INTO text_string, student_count
      FROM student
     WHERE fname = 'David';
-- 
    SELECT text_string, CONCAT('is... ', student_count) AS num_of_students;
END */;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `proc_3b` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = latin1 */ ;
/*!50003 SET character_set_results = latin1 */ ;
/*!50003 SET collation_connection  = latin1_swedish_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = '' */ ;
DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 PROCEDURE `proc_3b`(name_param VARCHAR(20))
BEGIN
    DECLARE student_count INTEGER;
-- 
    SELECT COUNT(*)
      INTO student_count
      FROM student
     WHERE lname LIKE name_param
        OR fname LIKE name_param;
-- 
    SELECT CONCAT('Num of students matching ',name_param,' is: ',student_count) 
           AS num_of_students; 
END */;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `proc_3c` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = latin1 */ ;
/*!50003 SET character_set_results = latin1 */ ;
/*!50003 SET collation_connection  = latin1_swedish_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = '' */ ;
DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 PROCEDURE `proc_3c`(IN lname_param VARCHAR(20), OUT result_param INT)
BEGIN
    SELECT COUNT(*)
      INTO result_param
      FROM student
     WHERE lname like lname_param;
 END */;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `proc_4a` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = latin1 */ ;
/*!50003 SET character_set_results = latin1 */ ;
/*!50003 SET collation_connection  = latin1_swedish_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = '' */ ;
DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 PROCEDURE `proc_4a`()
BEGIN
    DECLARE done    INT DEFAULT 0;
    DECLARE v_id    INT;
    DECLARE v_fname VARCHAR(20);
    DECLARE v_lname VARCHAR(20);
    DECLARE v_ssn   VARCHAR(12);
    DECLARE v_sex   CHAR(1);
    DECLARE cursor1 CURSOR FOR 
        SELECT * FROM student;
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done=1;
    OPEN cursor1;
L1: LOOP
        FETCH cursor1 INTO v_id,v_fname,v_lname,v_ssn,v_sex;
        IF done=1 THEN
            LEAVE L1;
        END IF;
    END LOOP;
    CLOSE cursor1;
-- 
    SELECT v_id, v_fname, v_lname, v_ssn, v_sex;
END */;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `proc_4b` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = latin1 */ ;
/*!50003 SET character_set_results = latin1 */ ;
/*!50003 SET collation_connection  = latin1_swedish_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = '' */ ;
DELIMITER ;;
/*!50003 CREATE*/ /*!50020 DEFINER=`demo4`@`localhost`*/ /*!50003 PROCEDURE `proc_4b`(p_first varchar(20), p_last varchar(20))
BEGIN
    DECLARE done_inst  INT DEFAULT 0;
    DECLARE done_stu   INT DEFAULT 0;
    DECLARE fi,li,ssn1 VARCHAR(20);
    DECLARE fs,ls      VARCHAR(20);
    DECLARE result     VARCHAR(5000) DEFAULT '';
    DECLARE cur1 CURSOR FOR 
        SELECT fname, lname, ssn  
          FROM instructor
         ORDER BY 2,1;
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done_inst=1;
-- 
    OPEN cur1;
L1: LOOP					-- loop thru the instructors
        FETCH cur1 INTO fi,li,ssn1;
        IF done_inst THEN
            LEAVE L1;
        END IF;
        SET result=concat(result,'<b><u>Instructor: ',fi,' ',li,'</u></b><br>');
-- 
        IF (fi=p_first AND li=p_last) THEN	-- if the instructor from param
            BEGIN
                DECLARE cur2 CURSOR FOR 
                SELECT distinct fname, lname
                  FROM student, class
                 WHERE ssn=stu_ssn
                   AND inst_ssn=ssn1            -- ssn1 is a variable from cur1
                 ORDER BY 2,1;
                DECLARE CONTINUE HANDLER FOR NOT FOUND SET done_stu=1;
-- 
                OPEN cur2;
L2:             LOOP				-- loop thru the students
                    FETCH cur2 INTO fs,ls;
                    IF done_stu THEN
                        LEAVE L2;
                    END IF;
                    SET result=concat(result,fs,' ',ls,'<br>');
                END LOOP;
                CLOSE cur2;
            END;
        END IF;
    END LOOP;
    CLOSE cur1;
-- 
    SET @result = result;                       -- make it a gloval variable
END */;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;

--
-- Final view structure for view `v_key_column`
--

/*!50001 DROP TABLE IF EXISTS `v_key_column`*/;
/*!50001 DROP VIEW IF EXISTS `v_key_column`*/;
/*!50001 SET @saved_cs_client          = @@character_set_client */;
/*!50001 SET @saved_cs_results         = @@character_set_results */;
/*!50001 SET @saved_col_connection     = @@collation_connection */;
/*!50001 SET character_set_client      = latin1 */;
/*!50001 SET character_set_results     = latin1 */;
/*!50001 SET collation_connection      = latin1_swedish_ci */;
/*!50001 CREATE ALGORITHM=UNDEFINED */
/*!50013 DEFINER=`demo4`@`localhost` SQL SECURITY DEFINER */
/*!50001 VIEW `v_key_column` AS select `k`.`TABLE_NAME` AS `table_name`,`k`.`COLUMN_NAME` AS `column_name`,replace(`t`.`CONSTRAINT_TYPE`,'PRIMARY',' PRIMARY') AS `constraint_type`,`k`.`CONSTRAINT_NAME` AS `constraint_name`,`k`.`ORDINAL_POSITION` AS `ordinal_position`,`k`.`REFERENCED_TABLE_NAME` AS `referenced_table_name`,`k`.`REFERENCED_COLUMN_NAME` AS `referenced_column_name` from (`information_schema`.`table_constraints` `t` join `information_schema`.`key_column_usage` `k`) where ((`t`.`TABLE_SCHEMA` = `k`.`TABLE_SCHEMA`) and (`t`.`TABLE_NAME` = `k`.`TABLE_NAME`) and (`t`.`CONSTRAINT_NAME` = `k`.`CONSTRAINT_NAME`)) order by 1,3,2,4,5 */;
/*!50001 SET character_set_client      = @saved_cs_client */;
/*!50001 SET character_set_results     = @saved_cs_results */;
/*!50001 SET collation_connection      = @saved_col_connection */;
/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;

/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;

-- Dump completed on 2011-06-30 17:12:00