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In my database in table_a every row has a date_created like "2011-04-17"
Now some of these dates are in the past, but my question is how can I retrieve the latest date that has not yet passed?
Try this one
SELECT * FROM table_a WHERE CURDATE() <= date_created
CURDATE()
Returns the current date as a value in 'YYYY-MM-DD' or YYYYMMDD
format, depending on whether the function is used in a string or
numeric context.
Can you try this,
SELECT * FROM table_a WHERE date_created >= CURDATE()
IF date_created is a date datatype then you can use
SELECT *
FROM table_a
WHERE date_created >= NOW()
LIMIT 1
Related
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How to retrieve latest value for each card from time from the table in SQL including sensor id and event type closest to todays date please?
create table events (
sensor_id integer not null,
event_type integer not null,
value integer not null,
time timestamp unique not null
);
I have tried code below
SELECT TOP 1 *
FROM events
WHERE events.time < "2021-01-01 00:00:01"
ORDER BY events.time DESC
Top 1 does not work in mysql and limit 1 did not get me the results.
I need to get latest time value for each sensor_id not only the latest value for the whole table.
You can use order by and limit. Let me assume that you mean on or before today:
select e.*
from events e
where e.timestamp <= now()
order by e.timestamp desc
limit 1;
If you want future dates as well, this can be tweaked.
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I need to be able to find all employees whose review is due in the next 45 days. I have the MS SQL:
Select *
from Employee
where DATEDIFF(yy,HireDate,GetDate()+45) > DATEDIFF(yy,HireDate,GetDate())
How does this convert to MySQL?
try:
Select *
from Employee
where DATEDIFF(HireDate,DATE_ADD(CURDATE(), INTERVAL 45 DAY)) > DATEDIFF(HireDate,CURDATE())
I think you can just use CurDate instead of GetDate, so it'd just be:
Select * from Employee where DATEDIFF(HireDate,CurDate()) > DATEDIFF(HireDate,CurDate())
You should only need to check DATEDIFF once. Just get the number of days and compare.
SELECT *
FROM Employee
WHERE DATEDIFF(CURDATE(), HireDate) <= 45
Docs for MySQL's DATEDIFF (and other date/time functions): http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html
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I have a table "USER" in MySQL , some columns are "ID","Name","Birth" and "Death"... Birth and Death save date values.
I want to display both Birth and Death and then order by date ASC.
Here is an example from what I have and what I need..
column Birth:
1-2-99
2-2-99
column Death:
1-1-99
2-3-99
desired result from a query:
1-1-99 (from death col)
1-2-99 (from Birth col)
2-2-99 (from Birth col)
2-3-99 (from death col)
The example is displayed as (DD,MM,YY)
Use UNION or UNION ALL:
SELECT `date`
FROM
(
SELECT death AS `date` FROM tablename
UNION ALL
SELECT birth FROM tablename
) AS t
ORDER BY `date`;
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I need to create a query in mysql to retrieve data where CREATED_DATE range should be 20th of current month to 20th of previous month. Please suggest..thanks
You can get dynamic records using current month, by the following query
SELECT * FROM table_name WHERE CREATED_DATE BETWEEN
DATE_FORMAT(NOW(),'%Y-%m-20') - INTERVAL 1 MONTH
AND DATE_FORMAT( NOW(),'%Y-%m-20')
Check the live result at the fiddle http://sqlfiddle.com/#!2/4668c/7
SELECT
*
FROM
your_table
WHERE
`CREATED_DATE` BETWEEN "2013-10-20" AND "2013-11-20";
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I am trying to write following query but i find id defecult for me.
select id,comment,comment_date from comments;
Here I want to add a field, if current time is more that 5 minutes of comment_date
then it should show no else yes.
How to write query for above.
One uses the date_sub function for date delta, taking a time and an interval, as follows:
select id
, comment
, comment_date
, case
when comment_date < date_sub(now(), interval 5 minute)
then 'yes'
else 'no'
end as answer
from comments;
SELECT
id,
comment_date,
CASE WHEN TIMESTAMPDIFF(MINUTE, comment_date, NOW()) > 5 THEN 'No'
ELSE 'Yes'
END AS isnew
FROM comments;