How do I CALL mysql TEMPORARY TABLE from CodeIgniter? - php

Question

I have written a stored procedure in mysql which will create a TEMPORARY TABLE, I want to access the data of TEMPORARY TABLE using Codeigniter.But when I call "$this->db->query()" it returns empty data.
$data=array();
$call_procedure = "CALL sp_Stock()";
$query = $this->db->query($call_procedure);
$sql="SELECT * FROM StockTable";
$query1 = $this->db->query($sql);

Answer 1

I have changed my way to show the data. And I do changes it on stored procedure.
DELIMITER $$
CREATE PROCEDURE sp_Stock()
BEGIN
DECLARE cursor_finish INTEGER DEFAULT 0;
DECLARE m_numofpurchaseBag DECIMAL(10,2)DEFAULT 0;
DECLARE m_purchasedKg DECIMAL(10,2)DEFAULT 0;
DECLARE m_purBagDtlId INTEGER DEFAULT 0;
DECLARE stockCursor CURSOR FOR
SELECT purchase_bag_details.`actual_bags`,
(purchase_bag_details.`net`*purchase_bag_details.`actual_bags`) AS PurchasedKg,
purchase_bag_details.`id` AS PurchaseBagDtlId
FROM
purchase_invoice_detail
INNER JOIN
purchase_bag_details
ON purchase_invoice_detail.`id`= purchase_bag_details.`purchasedtlid`
INNER JOIN
`do_to_transporter`
ON purchase_invoice_detail.`id` = do_to_transporter.`purchase_inv_dtlid`
WHERE purchase_invoice_detail.`teagroup_master_id`=6
AND purchase_invoice_detail.`id`=1481
AND do_to_transporter.`in_Stock`='Y';
-- declare NOT FOUND handler
DECLARE CONTINUE HANDLER
FOR NOT FOUND SET cursor_finish = 1;
DROP TEMPORARY TABLE IF EXISTS StockTable;
#temptable creation
CREATE TEMPORARY TABLE IF NOT EXISTS StockTable
(
purchaseBagDtlId INT,
purchasedBag NUMERIC(10,2),
purchasedKg NUMERIC(10,2),
blendedBag NUMERIC(10,2),
blendedKg NUMERIC(10,2),
stockBag NUMERIC(10,2),
stockKg NUMERIC(10,2)
);
#temptable creation
OPEN stockCursor ;
get_stock : LOOP
FETCH stockCursor INTO m_numofpurchaseBag,m_purchasedKg,m_purBagDtlId;
IF cursor_finish = 1 THEN
LEAVE get_stock;
END IF;
/*SELECT m_numofpurchaseBag,m_purchasedKg,m_purBagDtlId; */
/* Blending bag query*/
SET #m_numberofBlndBag:=0;
SET #m_BlndKg:=0;
/* Blend bag*/
SELECT #m_numberofBlndBag:=SUM(blending_details.`number_of_blended_bag`) AS belendedBag INTO #m_numberofBlndBag
FROM blending_details
WHERE blending_details.`purchasebag_id`= m_purBagDtlId
GROUP BY
blending_details.`purchasebag_id`;
#Blend Bag
#Blend Kgs
SELECT #m_BlndKg:=SUM(blending_details.`qty_of_bag` * blending_details.`number_of_blended_bag`) AS blendkg INTO #m_BlndKg
FROM blending_details
WHERE blending_details.`purchasebag_id`= m_purBagDtlId
GROUP BY
blending_details.`purchasebag_id`;
SET #m_StockBag:=(m_numofpurchaseBag - #m_numberofBlndBag);
SET #m_StockKg:=(m_purchasedKg - #m_BlndKg);
INSERT INTO StockTable
(
purchaseBagDtlId ,
purchasedBag ,
purchasedKg ,
blendedBag ,
blendedKg ,
stockBag ,
stockKg
)VALUES(m_purBagDtlId,m_numofpurchaseBag,m_purchasedKg,#m_numberofBlndBag,#m_BlndKg,#m_StockBag,#m_StockKg);
END LOOP get_stock;
CLOSE stockCursor;
SELECT * FROM StockTable;
#DROP TABLE StockTable;
END$$
DELIMITER ;
#CALL sp_Stock();

Answer 2

Anywhere I am using a temp table I am executing this before the temp table is created:
$this->db->query('DROP TABLE IF EXISTS StockTable');
I seem to remember reading someone having the same problem as you and for some reason you have to execute the above first.
So try:
$data=array();
$call_procedure = "CALL sp_Stock()";
$this->db->query('DROP TABLE IF EXISTS StockTable');
$query = $this->db->query($call_procedure);
$sql="SELECT * FROM StockTable";
$query1 = $this->db->query($sql);