DELIMITER $$

USE `mtapp_toms`$$

DROP PROCEDURE IF EXISTS `proc_dailyrpt_data_mix_preprocess`$$

CREATE DEFINER=`dtauser`@`%` PROCEDURE `proc_dailyrpt_data_mix_preprocess`()
BEGIN
	
	-- CALL proc_weekrpt_data_mix_preprocess()	
	#declare v_sql varchar(1000);
	DECLARE v_col VARCHAR(50);
	DECLARE v_city VARCHAR(50);
	DECLARE v_date VARCHAR(20);	
	DECLARE done INT DEFAULT FALSE;		
	DECLARE cur CURSOR FOR
	SELECT COLUMN_NAME FROM information_schema.COLUMNS WHERE table_name = 'tb_dailyrpt_data_index_day'
	AND COLUMN_NAME NOT IN ('時間','所屬省份','所屬地市','地方簡稱') ;	
	DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
	SET v_date='2020-07-12';#(SELECT DATE_ADD( CURRENT_DATE(),INTERVAL -1 DAY));
	OPEN cur;
	read_loop: LOOP
	FETCH cur INTO v_col;
	IF done THEN
	LEAVE read_loop;
	END IF;
	BEGIN
		
		DECLARE done2 INT DEFAULT FALSE;
		DECLARE cur2 CURSOR FOR
		SELECT 地市名稱 FROM `tb_dailyrpt_config_city` ;#where 地市名稱='全量';
		DECLARE CONTINUE HANDLER FOR NOT FOUND SET done2 = TRUE;
		OPEN cur2;
		read_loop2: LOOP
		FETCH cur2 INTO v_city;
		IF done2 THEN
		LEAVE read_loop2;
		END IF;
		BEGIN
			#declare v_val varchar(100);
			SET @v_sql=CONCAT('set @v_val=(select ',v_col,' from tb_dailyrpt_data_index_day WHERE 所屬地市=''',v_city,''' AND 時間=''',v_date,''' limit 1)');
			PREPARE stmt FROM @v_sql;
			EXECUTE stmt;
			#select @v_val;
			IF (@v_val IS NULL) THEN			
				SET @v_sql=CONCAT('set @v_val_last=(SELECT `',v_col,'` FROM `tb_dailyrpt_data_index_day` 
				WHERE 所屬地市=''',v_city,''' AND 時間<''',v_date,''' AND `',v_col,'` 
				IS NOT NULL ORDER BY `時間` DESC 	LIMIT 1)');
				#set @sql=v_sql
				#select @v_sql;
				PREPARE stmt FROM @v_sql;
				EXECUTE stmt;
				IF(@v_val_last IS NOT NULL) THEN
					SET @v_sql=CONCAT('update tb_dailyrpt_data_index_day set ',v_col,'=''',@v_val_last,''' WHERE 所屬地市=''',v_city,''' AND 時間=''',v_date,''' ');
					#SELECT @v_sql;
					PREPARE stmt FROM @v_sql;
					EXECUTE stmt;
				END IF;
			END IF;
		END;
		END LOOP;
		CLOSE cur2;
		#select v_col;
	END;
	END LOOP;
	CLOSE cur;
	
END$$

DELIMITER ;