delimiter $$

CREATE FUNCTION hello (tableId INT, chunkSize INT) RETURNS INT


BEGIN
	select max(endVal) into beginVal from KeyGen where tableId=@tableId;
	@beginVal=@beginVal+1;
	@endVal=@beginVal+(@chunkSize-1);
	INSERT INTO KeyGen (beginVal, endVal, tableId) VALUES (@beginVal, @endVal , @tableId);
	
	RETURN LAST_INSERT_ID() from KeyGen;
END