Cursor in Mysql not working in Mysql 5.57 - mysql

Question

Cursor in Mysql not working in Mysql 5.57
I converted SQL query into MySQL query, SQL query give me records, but in Mysql query is doesn't provide any records and neither give any error
//Following is my SQL query
USE [Trackdb]
GO
/****** Object: StoredProcedure [dbo].[GetRecords] Script Date: 06-11-2019 09:48:05 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[GetRecords]
AS
BEGIN
DECLARE #Date VARCHAR(15)
create table #TempHotel
(
CatID Varchar(50),
Cnt INT,
Date Date
)
create table #TempRestaurant
(
CatID Varchar(50),
Cnt INT,
Date Date
)
DECLARE Track_CURSOR CURSOR
LOCAL FORWARD_ONLY FOR
SELECT Distinct(Convert(date,ms_date)) FROM tbltrackingrtt WHERE ms_date > '2017-11-01' AND heirarchy LIKE '%*145*%' AND category <> 0 AND category <> 145
OPEN Track_CURSOR
FETCH NEXT FROM Track_CURSOR INTO #Date
WHILE ##FETCH_STATUS = 0
BEGIN
--PRINT 'EMP_ID: ' + #Date --+ ' EMP_NAME '+#EMP_NAME +' EMP_SALARY ' +CONVERT(NVARCHAR(MAX),#EMP_SALARY) + ' EMP_CITY ' +#EMP_CITY
INSERT INTO #TempHotel
SELECT TOP 100 Category AS CatID, Count(id) Cnt, convert(Date,ms_date) Date FROM tbltrackingrtt
WHERE heirarchy LIKE '%*145*%' AND category <> 0 AND category <> 145 AND CONVERT(DATE,ms_date) = #Date
GROUP BY Category, convert(Date,ms_date)
ORDER BY convert(Date,ms_date) ASC, Count(id) DESC
INSERT INTO #TempRestaurant
SELECT TOP 100 Category AS CatID, Count(id) Cnt, convert(Date,ms_date) Date FROM tbltrackingrtt
WHERE heirarchy LIKE '%*169*%' AND category <> 0 AND category <> 169 AND CONVERT(DATE,ms_date) = #Date
GROUP BY Category, convert(Date,ms_date)
ORDER BY convert(Date,ms_date) ASC, Count(id) DESC
FETCH NEXT FROM Track_CURSOR INTO #Date
END
SELECT * FROM #TempHotel
SELECT * FROM #TempRestaurant
CLOSE Track_CURSOR
DEALLOCATE Track_CURSOR
DROP table #TempHotel
DROP table #TempRestaurant
END
// Following is my Mysql query
CREATE DEFINER=`root`#`localhost` PROCEDURE `GetRecords`()
BEGIN
DECLARE NOT_FOUND INT DEFAULT 0;
DECLARE v_Date VARCHAR(15);
DECLARE Track_CURSOR
CURSOR FOR
SELECT Distinct CAST(ms_date as Date) FROM tbltrackingrtt WHERE ms_date > '2017-11-01' AND heirarchy LIKE '%*145*%' AND category <> 0 AND category <> 145;
create temporary table TempHotel
(
CatID Varchar(50),
Cnt INT,
Date Date
);
create temporary table TempRestaurant
(
CatID Varchar(50),
Cnt INT,
Date Date
);
OPEN Track_CURSOR;
FETCH Track_CURSOR INTO v_Date;
WHILE NOT_FOUND = 0
DO
-- PRINT 'EMP_ID: ' + #Date --+ ' EMP_NAME '+#EMP_NAME +' EMP_SALARY ' +CONVERT(NVARCHAR(MAX),#EMP_SALARY) + ' EMP_CITY ' +#EMP_CITY
INSERT INTO TempHotel
SELECT Category AS CatID, Count(id) Cnt, CAST(ms_date as Date) as Date FROM tbltrackingrtt
WHERE heirarchy LIKE '%*145*%' AND category <> 0 AND category <> 145 AND CAST(ms_date as Date) = v_Date
GROUP BY Category, CAST(ms_date as Date)
ORDER BY CAST(ms_date as Date) ASC, Count(id) DESC LIMIT 100;
select TempHotel;
INSERT INTO TempRestaurant
SELECT Category AS CatID, Count(id) Cnt, CAST(ms_date as Date) as Date FROM tbltrackingrtt
WHERE heirarchy LIKE '%*169*%' AND category <> 0 AND category <> 169 AND CAST(ms_date as Date) = v_Date
GROUP BY Category, CAST(ms_date as Date)
ORDER BY CAST(ms_date as Date) ASC, Count(id) DESC LIMIT 100;
FETCH Track_CURSOR INTO v_Date;
END WHILE;
SELECT * FROM TempHotel;
SELECT * FROM TempRestaurant
CLOSE;
DROP table TempHotel;
DROP table TempRestaurant;
END
Anyone help me on this, I don't what I am doing wrong here, is there is any problem in MySQL cursor

Answer 1

Apart from the syntax error pointed out by #solarflare the only thing that appears to be wrong with this code is the lack of a handler you should review https://dev.mysql.com/doc/refman/8.0/en/cursors.html and https://dev.mysql.com/doc/refman/5.7/en/handler.html (which you should know about for error handling in mysql)
drop procedure if exists p;
drop temporary table if exists temphotel,temprestaurant;
drop table if exists tbltrackingrtt;
create table tbltrackingrtt
(id int auto_increment primary key,ms_date date,heirarchy varchar(20),category int);
insert into tbltrackingrtt (ms_date,heirarchy,category) values
('2017-11-02','*145*',10), ('2017-11-02','*145*',10),
('2017-11-02','*169*',10), ('2017-11-02','*145*',10);
delimiter $$
CREATE PROCEDURE p()
BEGIN
DECLARE NOT_FOUND INT DEFAULT 0;
DECLARE v_Date VARCHAR(15);
DECLARE Track_CURSOR
CURSOR FOR
SELECT Distinct CAST(ms_date as Date)
FROM tbltrackingrtt
WHERE ms_date > '2017-11-01' AND heirarchy LIKE '%*145*%' AND category <> 0 AND category <> 145;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET not_found = TRUE;
create temporary table TempHotel
(
CatID Varchar(50),
Cnt INT,
Date Date
);
create temporary table TempRestaurant
(
CatID Varchar(50),
Cnt INT,
Date Date
);
OPEN Track_CURSOR;
FETCH Track_CURSOR INTO v_Date;
WHILE NOT_FOUND = 0 DO
-- PRINT 'EMP_ID: ' + #Date --+ ' EMP_NAME '+#EMP_NAME +' EMP_SALARY ' +CONVERT(NVARCHAR(MAX),#EMP_SALARY) + ' EMP_CITY ' +#EMP_CITY
INSERT INTO TempHotel
SELECT Category AS CatID, Count(id) Cnt, CAST(ms_date as Date) as Date
FROM tbltrackingrtt
WHERE heirarchy LIKE '%*145*%' AND category <> 0 AND category <> 145 AND CAST(ms_date as Date) = v_Date
GROUP BY Category, CAST(ms_date as Date)
ORDER BY CAST(ms_date as Date) ASC, Count(id) DESC LIMIT 100;
select * from TempHotel;
INSERT INTO TempRestaurant
SELECT Category AS CatID, Count(id) Cnt, CAST(ms_date as Date) as Date
FROM tbltrackingrtt
WHERE heirarchy LIKE '%*169*%' AND category <> 0 AND category <> 169 AND CAST(ms_date as Date) = v_Date
GROUP BY Category, CAST(ms_date as Date)
ORDER BY CAST(ms_date as Date) ASC, Count(id) DESC LIMIT 100;
FETCH Track_CURSOR INTO v_Date;
END WHILE;
SELECT * FROM TempHotel;
SELECT * FROM TempRestaurant
CLOSE;
DROP table TempHotel;
DROP table TempRestaurant;
END $$
delimiter ;
call p();
+-------+------+------------+
| CatID | Cnt | Date |
+-------+------+------------+
| 10 | 3 | 2017-11-02 |
+-------+------+------------+
1 row in set (0.27 sec)
+-------+------+------------+
| CatID | Cnt | Date |
+-------+------+------------+
| 10 | 3 | 2017-11-02 |
+-------+------+------------+
1 row in set (0.29 sec)
+-------+------+------------+
| CatID | Cnt | Date |
+-------+------+------------+
| 10 | 1 | 2017-11-02 |
+-------+------+------------+
1 row in set (0.30 sec)