I made a program with this code:
select DATE_FORMAT(DATE_ADD(Birth_Date, INTERVAL '55 - 1' YEAR_MONTH), '01-%m-%Y')
AS Retire_Date
FROM employee
The question is how can I count amount of record Retire_Date in this month (example: February, 2016)?
NOTE : retire_date column isn't exist on database data
If I understood correctly, you want a query that returns how many people are retiring/retired in this the current month so:
SELECT count(*)
from employee
where year(DATE_FORMAT(DATE_ADD(Birth_Date, INTERVAL '55 - 1' YEAR_MONTH), '01-%m-%Y')) = year(curdate())
and month(DATE_FORMAT(DATE_ADD(Birth_Date, INTERVAL '55 - 1' YEAR_MONTH), '01-%m-%Y')) = month(curdate())
Is this what you meant?
Related
I have an SSRS table with the last 12 months' balance details. I need to create column that calculates the difference between the last and (last but one) months' balance. Eg: (July balance - June balance). Any suggestions on how to go about this?
Thanks in advance.
If you Database is Sql Server 2012 or later you should use Lag function. Something like this:
select Month, balance, lag(balance) over (order by Month) as PreviousBalance
from table
order by Month;
I have used AdventureWorks/MDXStepByStep database for query below that joins current month and prior month.
SELECT CurruentDate = a.[DateKey]
,LastMonthDate = b.DateKey
,CurrentValue = a.[FullDateAlternateKey]
,LastMonthValue = b.[FullDateAlternateKey]
,[Difference] = a.[DateKey] - b.[DateKey]
FROM [dbo].[DimDate] a
JOIN [dbo].[DimDate] b
on DATEADD(month, 1, b.FullDateAlternateKey) = a.FullDateAlternateKey
I want to retrieve the records of employees who were joined in first quarter or in the first month. I have tried this but am not getting the right answer...
SELECT * FROM table
WHERE DOJ(date_created) = DOJ(CURRENT_DATE - INTERVAL 1 MONTH)
Please help me with this!
Answering the question as clarified in a comment...
SELECT * FROM table
WHERE YEAR(table.doj) = 2015 AND QUARTER(table.doj) = 1
If instead you want "first quarter of prior year"...
SELECT * FROM table
WHERE YEAR(table.doj) = YEAR(CURRENT_DATE) - 1 AND QUARTER(table.doj) = 1
In either case, note that there's no code to include the first month, because that's part of the first quarter. However, if you wanted to make that explicit (at a slight performance hit), you could code it as follows...
SELECT * FROM table
WHERE YEAR(table.doj) = 2015 AND (QUARTER(table.doj) = 1
OR MONTH(table.doj) = 1)
If you run into performance problems because you have a lot of records but only an index on table.doj, you could also write the query over an explicit date range...
SELECT * FROM table
WHERE table.doj >= '2015-01-01' AND table.doj <= '2015-03-31'
I need to query a database which will return the number of people subscribed to a particular service during that month.
I use the below query
select subscriberid, count(*) from ABC where updated time like '2013-05-%' ;
In this query I need to update the Updatedtime field to be 2013-06-% when the next month comes and then 07 when the next to next month comes. I want the query to be updated automatically when the next month comes instead of manually changing it every time.
Also note that I want the data for a particular month at a time, so please don't suggest grouping by month as an answer.
One way to do it
SELECT subscriberid, COUNT(*)
FROM ABC
WHERE YEAR(updated_time) = YEAR(CURDATE())
AND MONTH(updated_time) = MONTH(CURDATE())
or
SELECT subscriberid, COUNT(*)
FROM ABC
WHERE updated_time BETWEEN ADDDATE(LAST_DAY(SUBDATE(CURDATE(), INTERVAL 1 MONTH)), 1)
AND LAST_DAY(CURDATE())
The following should work fine:
SELECT
subscriberid,
count(*)
from
ABC
where
updatedtime LIKE CONCAT(DATE_FORMAT(NOW(),'%Y-%m'), '-%')
I think you can use DATE_FORMAT function
SELECT subscriberid, count(*) as total
FROM ABC
WHERE DATE_FORMAT(updated_time, "%Y-%m") = "2013-05";
Use the following query:
SELECT subscribersid, updated, COUNT(*) from subscribers
WHERE YEAR(updated) = YEAR(NOW())
AND MONTH(updated) = MONTH(NOW())
You can see it working in this SQL Fiddle
Hope this helps
I am trying to nest a few queries but so far am getting back error 1242: Subquery returns more than 1 row. I want more than one row, as I am working on a number of records.
I have 2 tables. One has a commencement date stored in 3 columns; yr_comm, mth_comm, day_comm. The 2nd table has a period of service (in years) for a number of users which is expressed as an integer (2.71, 3.45, etc).
I need to take this start date (from table 1), and add on the period of service (from table 2) to obtain an end date, but I only need to display the year.
I have 2 queries which work just fine when seperate, they result in the required values, however I am having trouble combining the queries to get the desired end result.
Query 1: Concatenate the 3 commencement values into date format
SELECT concat_ws('-', yr_comm, mth_comm, day_comm) AS date_comm
FROM table 1
Query 2: Convert the integer yrs_service into days
SELECT format(yrs_served * 365, 0) AS days_served
FROM table 2
Query 3: Use date_add function to add the days service to the commencement date
SELECT date_add(date_comm, INTERVAL days_served DAY) AS date_left
Can anyone suggest how I can achieve the above? Many thanks in advance.
EDIT - Here is the full query I am working on:
SELECT prime_minister.pm_name, yr_comm, party, ADDDATE(
(SELECT CONCAT_WS('-', yr_comm, mth_comm, day_comm) FROM ministry), INTERVAL
(SELECT FORMAT(yrs_served * 365, 0) FROM prime_minister) YEAR) AS date_left
FROM ministry JOIN prime_minister USING (pm_name)
WHERE party NOT LIKE '%labor%'
AND prime_minister.pm_name = ministry.pm_name
ORDER BY pm_name;
you can use user variables
SET #date = CONCAT_WS('-', 2012,1,1); -- paste your query here
SET #toAdd = (SELECT MONTH(CURDATE())); -- paste your query here
SELECT DATE_ADD(#date, INTERVAL #toAdd DAY) AS date_left
SQLFiddle Demo
which is the same as
SET #date = CONCAT_WS('-', 2012,1,1); -- paste your query here
SET #toAdd = (SELECT MONTH(CURDATE())); -- paste your query here
SELECT #date + INTERVAL #toAdd DAY AS date_left
SQLFiddle Demo
or without using variable, which is more longer,
SELECT (CONCAT_WS('-', 2012,1,1)) + INTERVAL (SELECT MONTH(CURDATE())) DAY AS date_left
SQLFiddle Demo
I need some help with a mysql query. I've got db table that has data from Jan 1, 2011 thru April 30, 2011. There should be a record for each date. I need to find out whether any date is missing from the table.
So for example, let's say that Feb 2, 2011 has no data. How do I find that date?
I've got the dates stored in a column called reportdatetime. The dates are stored in the format: 2011-05-10 0:00:00, which is May 5, 2011 12:00:00 am.
Any suggestions?
This is a second answer, I'll post it separately.
SELECT DATE(r1.reportdate) + INTERVAL 1 DAY AS missing_date
FROM Reports r1
LEFT OUTER JOIN Reports r2 ON DATE(r1.reportdate) = DATE(r2.reportdate) - INTERVAL 1 DAY
WHERE r1.reportdate BETWEEN '2011-01-01' AND '2011-04-30' AND r2.reportdate IS NULL;
This is a self-join that reports a date such that no row exists with the date following.
This will find the first day in a gap, but if there are runs of multiple days missing it won't report all the dates in the gap.
CREATE TABLE Days (day DATE PRIMARY KEY);
Fill Days with all the days you're looking for.
mysql> INSERT INTO Days VALUES ('2011-01-01');
mysql> SET #offset := 1;
mysql> INSERT INTO Days SELECT day + INTERVAL #offset DAY FROM Days; SET #offset := #offset * 2;
Then up-arrow and repeat the INSERT as many times as needed. It doubles the number of rows each time, so you can get four month's worth of rows in seven INSERTs.
Do an exclusion join to find the dates for which there is no match in your reports table:
SELECT d.day FROM Days d
LEFT OUTER JOIN Reports r ON d.day = DATE(r.reportdatetime)
WHERE d.day BETWEEN '2011-01-01' AND '2011-04-30'
AND r.reportdatetime IS NULL;`
It could be done with a more complicated single query, but I'll show a pseudo code with temp table just for illustration:
Get all dates for which we have records:
CREATE TEMP TABLE AllUsedDates
SELECT DISTINCT reportdatetime
INTO AllUsedDates;
now add May 1st so we track 04-30
INSERT INTO AllUsedData ('2011-05-01')
If there's no "next day", we found a gap:
SELECT A.NEXT_DAY
FROM
(SELECT reportdatetime AS TODAY, DATEADD(reportdatetime, 1) AS NEXT_DAY FROM AllUsed Dates) AS A
WHERE
(A.NEXT_DATE NOT IN (SELECT reportdatetime FROM AllUsedDates)
AND
A.TODAY <> '2011-05-01') --exclude the last day
If you mean reportdatetime has the entry of "Feb 2, 2011" but other fields associated to that date are not present like below table snap
reportdate col1 col2
5/10/2011 abc xyz
2/2/2011
1/1/2011 bnv oda
then this query works fine
select reportdate from dtdiff where reportdate not in (select df1.reportdate from dtdiff df1, dtdiff df2 where df1.col1 = df2.col1)
Try this
SELECT DATE(t1.datefield) + INTERVAL 1 DAY AS missing_date FROM table t1 LEFT OUTER JOIN table t2 ON DATE(t1.datefield) = DATE(t2.datefield) - INTERVAL 1 DAY WHERE DATE(t1.datefield) BETWEEN '2020-01-01' AND '2020-01-31' AND DATE(t2.datefield) IS NULL;
If you want to get missing dates in a datetime field use this.
SELECT CAST(t1.datetime_field as DATE) + INTERVAL 1 DAY AS missing_date FROM table t1 LEFT OUTER JOIN table t2 ON CAST(t1.datetime_field as DATE) = CAST(t2.datetime_field as DATE) - INTERVAL 1 DAY WHERE CAST(t1.datetime_field as DATE) BETWEEN '2020-01-01' AND '2020-07-31' AND CAST(t2.datetime_field as DATE) IS NULL;
The solutions above seem to work, but they seem EXTREMELY slow (taking possibly hours, I waited for 30 min only) at least in my database.
This clause takes less than a second in same database (of course you need to repeat it manually dozen times and possibly change function names to find the actual dates). pvm = my datetime, WEATHER = my table.
mysql> select year(pvm) as _year,count(distinct(date(pvm))) as _days from WEATHER where year(pvm)>=2000 and month(pvm)=1 group by _year order by _year asc;
--ako