mysql基本函数、循环、跳出循环、游标使用及说明

select a.dept_id,b.dept_id from A a NATURAL JOIN B b

select a.dept_id,b.dept_id form A a join A b USING(dept_id)

SELECT
	id_,
	pat_name,
	id_card_no,
	phone_ 
FROM
	`inspect_meal_appointment_record` 
WHERE
	MATCH ( pat_name ) Against (
	'张三' 
	)
	

create fulltext index ind on inspect_meal_appointment_record (pat_name)  WITH PARSER ngram;

CREATE DEFINER=`root`@`localhost` PROCEDURE `repeatTest`()
BEGIN
	DECLARE nums INT DEFAULT 1;
	
	REPEAT
	  set nums = nums+1;
		UNTIL nums >= 10
		
	END REPEAT;

SELECT nums;


END

CREATE DEFINER=`root`@`localhost` PROCEDURE `whileTest`()
BEGIN
	DECLARE nums INT DEFAULT 1;
	
	WHILE nums <= 10 DO
	set nums = nums+1;
END WHILE;


SELECT nums;


END

CREATE DEFINER=`root`@`localhost` PROCEDURE `loopTest`()
BEGIN
	DECLARE nums INT DEFAULT 1;
	
	test_label: LOOP
	set nums = nums+1;

	IF nums >= 110 THEN
		LEAVE test_label; 
	END IF; 
END LOOP test_label;



SELECT nums;


END

CREATE DEFINER=`root`@`localhost` PROCEDURE `leaveTest`()
BEGIN
	DECLARE nums INT DEFAULT 1;
	
	while_label:WHILE TRUE DO
		IF nums > 10 THEN LEAVE while_label;
		END IF;
		set nums = nums+1;
END WHILE;


SELECT nums;


END

CREATE DEFINER=`root`@`localhost` PROCEDURE `ITERATETest`()
BEGIN
	DECLARE nums INT DEFAULT 1;
	
	test_label: LOOP
	set nums = nums+1;
	IF nums < 10
			THEN ITERATE test_label;
	ELSEIF nums > 15 
	THEN LEAVE test_label; 
	END IF; 
END LOOP test_label;



SELECT nums;


END

CREATE DEFINER=`inspect-v2-develop`@`%` PROCEDURE `updateTypeLabel`()
    COMMENT '数据迁移，储存过程'
BEGIN
	DECLARE s INT DEFAULT  0;
	DECLARE mealId VARCHAR(64);
	DECLARE num INT DEFAULT 0;
	
	DECLARE list CURSOR FOR  SELECT deploy_meal_id,COUNT(deploy_meal_id) from inspect_meal_deploy WHERE   is_deleted = '0' GROUP BY deploy_meal_id;
	
	DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET s = 1;
	
	OPEN list;
		
		FETCH list into mealId,num;
		while s<> 1 do
			IF num >= 1 THEN 
			UPDATE  inspect_meal_type_label SET meal_deploy_id = (SELECT id_ FROM inspect_meal_deploy WHERE is_deleted = '0' AND deploy_meal_id = mealId LIMIT 1) WHERE meal_id =  mealId AND is_deleted = '0';
			END IF;
			
			FETCH list into mealId,num;
		END WHILE;
		
	CLOSE list;

END