I found a code snippet for sql server and actually have to customize it for mysql while also passing parent table id (event_id).
SQL Server Version
CREATE PROC dbo.t_test
#StartDate DATETIME,
#EndDate DATETIME
AS
WHILE #StartDate <= #EndDate
BEGIN
INSERT INTO YourTable(YourDateField) VALUES (#StartDate)
SET #StartDate = DATEADD(d,1,#StartDate)
END
MySQL Version Attempt
CREATE PROCEDURE `day` (IN start DATE, IN end DATE, IN event_id INT)
BEGIN
WHILE start <= end DO
INSERT INTO day(date, event_id) VALUES(start, event_id);
SET start = start + 1;
END WHILE;
END
My table day structure is
day (id, date, event_id)
Related
I have a query :
insert into fookoo_business
select stat_date, sum(spend), sum(revenue)
from hooloo_business;
that i want to run for each date from '2017-01-20' until yesterday (it means the query will run 434 times if we're at 01/04/2018), for each date separately
(in a loop).
how can i create a loop in Mysql to do it for me?
I have tried:
creating procedure for the query select #stat_date, sum(spend), sum(revenue)
I called 'query'
then :
CREATE PROCEDURE loop_procedure()
BEGIN
SET #stat_date='2018-03-20';
CALL 'query';
REPEAT
SET #stat_date = #stat_date + INTERVAL 1 DAY;
UNTIL #stat_date = CURDATE() END REPEAT;
END
eventually i've used the following logic within a stored procedure to fetch the data:
PROCEDURE `x_monitoring_loop`()
BEGIN
DECLARE i INT;
DECLARE len INT;
SET len = 434;
SET i = 0;
WHILE (i < len) DO
SET #stat_date= CURDATE()-INTERVAL 1 DAY;
SET #stat_date= #stat_date- INTERVAL i DAY;
Insert query;
SET i = i +1;
END WHILE;
This way the query ran 434 times for each day, beginning at current date - 1 day.
I do not know why you want to use a procedure,I think we can just use a query sql to do it:
INSERT INTO fookoo_business
SELECT stat_date, SUM(spend), SUM(revenue)
FROM hooloo_business
WHERE stat_date BETWEEN STR_TO_DATE('2017-01-02', '%Y-%m-%d') -- start date
AND DATE_SUB(NOW(), INTERVAL 1 DAY) -- end date
GROUP BY stat_date;
I want to populate my table "MyDates" with a range of dates as shown in the code below. When I run the code I get this error "Unknown system variable 'dateStart'"
DECLARE
dateStart DATE DEFAULT '2011-01-01';
DECLARE
dateEnd DATE DEFAULT'2011-12-31';
WHILE dateStart<=dateEnd DO
INSERT
INTO
MyDates
(
mydate
)
VALUES
(
dateStart
) ;
SET dateStart=date_add(dateStart,INTERVAL 1 DAY) ;
END WHILE;
END;
My table has a column date_period which stores Date in the format YYYYMM. I want to write a query which inserts date in date_period column in the format YYYYMM if there is no entry till current month.
For Example: the date period has entry till October 2015 so it will contain the value 201510. Now I want to check and insert data till current month if it is not present. So the entries will be now 201511, 201512, 201601
How can I achieve this?
try this way, may it will help you
DECLARE #v DATE= getdate()
declare #Currentdate varchar(10)
set #Currentdate=CONVERT(VARCHAR(10), #v, 112)
/*#Currentdate string is in format '20160129'*/
IF NOT EXISTS(select * from Table1 where date_period=LEFT(#Currentdate,6))
begin
insert into Table1(date_period)values(LEFT(#Currentdate,6))
end
Try this
i think this will be the complete solution for your problem
declare #monthcount int
DECLARE #v DATE= getdate()
declare #lastsavedMonth varchar(20)= (select MAX(date_period) from Table1)
declare #Lastsaveddate varchar(20)= #lastsavedMonth+''+RIGHT(CONVERT(VARCHAR, 100 + DATEPART(d,#v)), 2)
set #monthcount=datediff(month,#Lastsaveddate,CONVERT(VARCHAR(10), #v, 112))
while #monthcount>=0
begin
declare #dateofsavingmonth varchar(20)
if(#monthcount=0)
begin
set #dateofsavingmonth=CONVERT(VARCHAR(10),#v,112)
end
else
begin
set #dateofsavingmonth=CONVERT(VARCHAR(10), dateadd(month,-#monthcount,#v),112)
end
IF NOT EXISTS(select * from Table1 where date_period=LEFT(#dateofsavingmonth,6))
begin
insert into Table1(date_period)values(LEFT(#dateofsavingmonth,6))
end
set #monthcount =#monthcount-1
end
In SQL Server 2008 I have a startdate and an enddate being passed to my procedure. I need to check each date in the range to see if it exists in my validworkday table. I have no clue where to begin on this, but this is how start/end day are set-up
Declare #startdate date, #enddate date
Set #startdate = '01/01/2015'
Set #enddate = '04/16/2015'
Now how can I iterate each date in this span to see if validworkday = true for it? The check I would need to run is like so (checking each date)
Select isvalidworkday
from validworkdays
where date = '01/01/2015'
Select isvalidworkday
from validworkdays
where date = '01/02/2015'
This is syntax that I found from #Incidently years ago (I don't remember where that original post is, but hopefully this will be enough to give the credit), that I still use today. All I did was slightly tweak his syntax to insert the data into a temp table and add a cursor to iterate each individual date.
DECLARE #DateFrom smalldatetime, #DateTo smalldatetime, #firstdate date;
SET #DateFrom='20000101';
SET #DateTo='20081231';
-------------------------------
WITH T(date)
AS
(
SELECT #DateFrom
UNION ALL
SELECT DateAdd(day,1,T.date)
FROM T
WHERE T.date < #DateTo
)
SELECT date
INTO #AllDates
FROM T OPTION (MAXRECURSION 32767);
Declare c1 Cursor For
Select date
FROM #AllDates
Open c1
Fetch Next From c1 Into #firstdate
While ##FETCH_STATUS = 0
Begin
--Do whatever processing you need here
Fetch Next From c1 Into #firstdate
End
Close c1
Deallocate c1
Code should only live in one place and not be rewritten. Create functions (once) like GetAllIntsBetween(), GetAllMonths(), GetAllDates(), etc. Then used them like:
DECLARE #startdate date = '01/01/2015', #enddate date = '04/16/2015'
SELECT allDates.TheDate,
isnull(v.isvalidworkday, false) AS isvalidworkday
FROM dbo.GetAllDates(#startdate, #enddate) AS allDates
LEFT JOIN validworkdays AS v
ON allDates.TheDate = v.MyDate
The GetAllDates() would be:
CREATE FUNCTION dbo.GetAllDates(#Start DATETIME, #End DATETIME)
RETURNS
#AllDates TABLE
(
TheDate DATETIME
)
AS
BEGIN
IF #Start > #End
BEGIN
DECLARE #Temp DATETIME
SET #Temp = #Start
SET #Start = #End
SET #End = #Temp
END
WHILE #Start <= #End
BEGIN
INSERT INTO #AllDates
VALUES(#Start)
SET #Start = DATEADD(DAY, 1, #Start)
END
RETURN
END
(note: can change DATETIME to DATE)
I'm using MySql and I have a Policy table with StartDate and EndDate columns.
How can I write a SELECT query to give me a new row for each month in the date range between these 2 columns.
For example if I have a policy with:
Id StartDate EndDate
123456 2011-05-25 2011-07-26
I would want to see:
Id PolicyId StartDate EndDate
1 123456 2011-05-25 2011-06-24
2 123456 2011-06-25 2011-07-24
3 123456 2011-07-25 2011-07-26
I'm not sure about performance because I'm not much experienced with stored procedures so there might be a better approach. Also, you might want to change the structure of the temporary table (aka. PolicyList). Anyway…
This can also be converted into before/after triggers instead of executing it each time.
DROP PROCEDURE IF EXISTS CreatePolicyList;
DELIMITER //
CREATE PROCEDURE CreatePolicyList()
BEGIN
DECLARE origId, done INT DEFAULT 0;
DECLARE startD, endD DATE;
DECLARE cur CURSOR FOR
SELECT id, StartDate, EndDate FROM Policy;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;
DROP TEMPORARY TABLE IF EXISTS PolicyList;
CREATE TEMPORARY TABLE PolicyList (
id INT(11) UNSIGNED NOT NULL AUTO_INCREMENT,
PolicyId INT(11) NOT NULL,
StartDate DATE NOT NULL,
EndDate DATE NOT NULL,
PRIMARY KEY (id)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
OPEN cur;
recLoop: LOOP
FETCH cur INTO origId, startD, endD;
IF (done)
THEN LEAVE recLoop;
END IF;
-- following is an alternative to keep records like
-- "2011-05-25, 2011-06-25" in a single record
-- WHILE startD < DATE_SUB(endD, INTERVAL 1 MONTH) DO
WHILE startD < DATE_ADD(DATE_SUB(endD, INTERVAL 1 MONTH), INTERVAL 1 DAY) DO
INSERT INTO PolicyList (PolicyId, StartDate, EndDate)
VALUES (origId, startD,DATE_SUB(
DATE_ADD(startD, INTERVAL 1 MONTH),
INTERVAL 1 DAY
));
SET startD = DATE_ADD(startD, INTERVAL 1 MONTH);
END WHILE;
IF startD >= DATE_SUB(endD, INTERVAL 1 MONTH) THEN
INSERT INTO PolicyList (PolicyId, StartDate, EndDate)
VALUES (origId, startD, endD);
END IF;
END LOOP;
CLOSE cur;
END //
CALL CreatePolicyList;
and then query:
SELECT * FROM PolicyList
ORDER BY PolicyId, StartDate;