Get and add next row column value to first row column - mysql

Question

I have a database table which as below
I want to add each SoldD column to next row ValT column.
for example, query result for above given table should be like as
Above snapshot is for expected Results
so for, I have tried many things but failed to get expected results
Failed try 1:
SELECT *,(IFNULL((SELECT VaIT from saleorder s WHERE s.id > ss.id limit 1),0)+ss.SoldD) FROM `saleorder` ss
Failed try 2:
update saleorder SET SoldD=(IFNULL((SELECT VaIT from (SELECT * from saleorder WHERE id > id+1 limit 1) s),0)+SoldD)
Any help is highly appreciated, Thanks in advance!

Answer 1

MySql version:
CREATE DEFINER=`root`#`localhost` PROCEDURE `new_procedure`()
BEGIN
DECLARE id2 INT DEFAULT 0;
declare VALT2 INT DEFAULT 0;
declare soldD2 INT DEFAULT 0;
declare beforSo2 INT DEFAULT 0;
DECLARE cur1 CURSOR FOR SELECT Id, ValT, SoldD FROM saleorder ORDER BY id;
OPEN cur1;
FETCH cur1 INTO id2, VALT2, soldD2;
SET valT2 = soldD2;
x: LOOP
IF(valT2 IS NULL) THEN
SET valT2 = 0;
END IF;
IF(beforSo2 IS NULL) THEN
SET beforSo2 = 0;
END IF;
UPDATE saleorder
SET SoldD = beforSo2 + valT2
WHERE ID = id2;
SET beforSo2 = beforSo2 + valT2;
FETCH cur1 INTO id2, VALT2, soldD2;
END LOOP;
CLOSE cur1;
END
Then call procedure this way:
CALL new_procedure;
SqlServer version:
DECLARE db_cursor CURSOR FOR SELECT ID, ValT, SoldD FROM Table_2 ORDER BY ID;
DECLARE #ID INT;
DECLARE #valT INT;
DECLARE #soldD INT;
DECLARE #beforSoldD INT = 0;
OPEN db_cursor;
FETCH NEXT FROM db_cursor INTO #ID, #valT, #soldD;
SET #valT = #soldD;
WHILE ##FETCH_STATUS = 0
BEGIN
IF(#valT IS NULL)
SET #valT = 0;
IF(#beforSoldD IS NULL)
SET #beforSoldD = 0;
UPDATE Table_2
SET SoldD = #beforSoldD + #valT
WHERE ID = #ID;
SET #beforSoldD = #beforSoldD + #valT;
FETCH NEXT FROM db_cursor INTO #ID, #valT, #soldD;
END;
CLOSE db_cursor;
DEALLOCATE db_cursor;
Base data:
Result: