friends.
I am trying to create function in MySQL using this script:
CREATE FUNCTION CurrentMemoDepartment(MID INT)
RETURNS INT
BEGIN
DECLARE DeptID INT;
SET DeptID = 0;
SELECT TOP 1 TDeptID INTO DeptID FROM Transactions WHERE MemoID = MID ORDER BY ID DESC;
RETURN DeptID;
END
but it says:
1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 4
Single-statement function does not need in BEGIN-END, intermediate variables, DELIMITER reassing.
And MySQL uses LIMIT, not TOP n.
CREATE FUNCTION CurrentMemoDepartment(MID INT)
RETURNS INT
RETURN SELECT TDeptID
FROM Transactions
WHERE MemoID = MID
ORDER BY ID DESC
LIMIT 1;
USE DELIMITER for declaring
like
DELIMITER $$
CREATE FUNCTION CurrentMemoDepartment(MID INT)
RETURNS INT
BEGIN
DECLARE DeptID INT;
SET DeptID = 0;
SELECT TDeptID INTO DeptID FROM Transactions WHERE MemoID = MID ORDER BY ID DESC LIMIT 1;
RETURN DeptID;
END$$
DELIMITER ;
Related
Here is the reference link that I used to create procedures: https://dba.stackexchange.com/questions/7147/find-highest-level-of-a-hierarchical-field-with-vs-without-ctes/7161#7161?newreg=88de047579d242c98b8cfe0e17f0330f
Procedures are working well with the example. But not working in my own database. Seems I do something wrong while creating procedures.
Here is the procedure for my db:
DELIMITER $$
DROP FUNCTION IF EXISTS `demo`.`GetParentIDByID` $$
CREATE FUNCTION `demo`.`GetParentIDByID` (GivenID INT) RETURNS INT
DETERMINISTIC
BEGIN
DECLARE rv INT;
SELECT IFNULL(user_by,-1) INTO rv FROM
(SELECT user_by FROM users WHERE id = GivenID) A;
RETURN rv;
END $$
DELIMITER ;
Sql query for the following procedure is working fine. It is basically getting parent_id of the node:
SELECT id,GetParentIDByID(id) FROM users;
Issue occurs when I am try to get Ancestors. Here is the Procedure that I am using:
DELIMITER $$
DROP FUNCTION IF EXISTS `demo`.`GetAncestry` $$
CREATE FUNCTION `demo`.`GetAncestry` (GivenID INT) RETURNS VARCHAR(1024)
DETERMINISTIC
BEGIN
DECLARE rv VARCHAR(1024);
DECLARE cm CHAR(1);
DECLARE ch INT;
SET rv = '';
SET cm = '';
SET ch = GivenID;
WHILE ch > 0 DO
SELECT IFNULL(user_by,-1) INTO ch FROM
(SELECT user_by FROM users WHERE id = ch) A;
IF ch > 0 THEN
SET rv = CONCAT(rv,cm,ch);
SET cm = ',';
END IF;
END WHILE;
RETURN rv;
END $$
DELIMITER ;
SQL query:
SELECT id,GetAncestry(id) FROM users;
Phpmyadmin getting stuck, if I am using this query. It never returns me anything nor an error or success
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);
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();
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);
I am getting this error:
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 4
when i run followed code in phpmyadmin also appearing this error beside of second declare expression:
unrecognized statement type (near declare)
What can be cause of these error? (Phpmyadmin, version, etc)
create function fnc_generate_url(title_in varchar(250))
returns varchar(250)
begin
declare v_count int;
declare v_return varchar(250);
declare cr_count cursor
for
select count(1) from tbl_page where page_title like concat('%',title_in,'%');
open cr_count;
fetch cr_count into v_count;
close cr_count;
if v_count = 0 then
set v_return = replace(trim(title_in), ' ', '-');
else
set v_return = concat(replace(trim(title_in), ' ', '-'),'-',v_count);
end if;
return v_return;
end;
Works fine if we use delimiters.
Try this:
DELIMITER $$
create function fnc_generate_url(title_in varchar(250))
returns varchar(250)
begin
declare v_count int;
declare v_return varchar(250);
declare cr_count cursor
for
select count(1) from tbl_page where page_title like concat('%',title_in,'%');
open cr_count;
fetch cr_count into v_count;
close cr_count;
if v_count = 0 then
set v_return = replace(trim(title_in), ' ', '-');
else
set v_return = concat(replace(trim(title_in), ' ', '-'),'-',v_count);
end if;
return v_return;
end;
$$
DELIMITER ;
hi i am using mysql trigger to update a table on another table's insertion
this trigger works fine
CREATE TRIGGER `update_pupil_subject` AFTER INSERT ON `pupil_marks`
FOR EACH ROW
BEGIN
UPDATE pupil_subjects SET NumberOfStudens = NumberOfStudens + 1 WHERE NEW.SubjectID = SubjectID;
END$$
but this gives an error
CREATE TRIGGER `update_pupil_subject` AFTER INSERT ON `pupil_marks`
FOR EACH ROW
BEGIN
UPDATE pupil_subjects SET NumberOfStudens = NumberOfStudens + 1 , AverageMarks = (SELECT AVG(Marks) FROM pupil_marks WHERE NEW.StudentID = StudentID ) WHERE NEW.SubjectID = SubjectID;
END$$
how to write this correctly , please help . thanks in advance .
Apparently there were problems when sub-queries were used:
Can you try splitting the SQL statement:
DELIMITER $$
CREATE TRIGGER `update_pupil_subject`
AFTER INSERT
ON `pupil_marks`
FOR EACH ROW
BEGIN
DECLARE avg_marks float;
SELECT AVG(Marks)
INTO avg_marks
FROM pupil_marks
WHERE NEW.SubjectID = SubjectID;
UPDATE pupil_subjects
SET NumberOfStudens = NumberOfStudens + 1, AverageMarks = avg_marks
WHERE NEW.SubjectID = SubjectID;
END
$$
Edit: Use
SHOW TRIGGERS WHERE `table` = 'pupil_marks';
to get all triggers defined on pupil_marks. You can't have multiple triggers on an event as all actions can be covered in single trigger.
NOTE: I think AVG(Marks) is for a given subject, so modified trigger definition accordingly.
declare a variable inside the trigger and assign it with the subquery
declare avg_mark integer default 0;
set avg_mark := (SELECT AVG(Marks) FROM pupil_marks WHERE NEW.StudentID = StudentID);
then use the variable "avg_mark" in your update statement...
it may work...
if not then check the delimiter just below phpmyadmin sql box . It should be "$$"
I have created the following stored procedure in mysql...
DELIMITER //
CREATE PROCEDURE GetMember(IN in_memberID int)
BEGIN
SELECT *
FROM Members
WHERE MemberID = in_memberID;
END//
$result = mysql_query("CALL GetMember(".$memberID.")") or die(mysql_error());
while ($row = mysql_fetch_array($result)) {
echo $row['Name'] . "</br>";
}
But when I call it from php it returns all records in the Members table, what am I doing wrong?
EDIT:
When I try to call the query within phpmyadmin I get this error
CALL GetMember(1);
#1312 - PROCEDURE myDb.GetMember can't return a result set in the given context
what version of PHP?
PHP 5.2.3 and PHP 5.2.4 have a bug with procedures:
https://bugs.php.net/bug.php?id=42548
use Database_Name;
DELIMETER $$
DROP PROCEDURE IF EXISTS Proc$$
CREATE PROCEDURE Proc()
BEGIN
DECLARE x INT;
SET x = 1;
WHILE x <= 110000 DO
INSERT INTO Table_Name (word, mean) VALUES ('a', 'a mean');
SET x = x + 1;
END WHILE;
END$$
DELIMITER ;