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I have two tables in MySQL. First is a Room.
and second is Reservation.
In Table reservation i have Room_Id and Reservation_DateFrom and Reservation_DateTo
How can i make a query that take two random dates for example (12-12-2012 and 21-12-2012) and see if the specific room is free all of the days from 12-12-2012 to 21-12-2012 if i have
DateFrom and DateTo for rooms in Reservation. I want to list all rooms that are available for rent on these days. For example if Room 1 has reservation from 15-12-2012 to 20-12-2012
it will not return it because some days from 12-12-2012 to 21-12-2012 are already reserved.
Thanks.
SELECT Ro.*
FROM Room Ro
WHERE NOT EXISTS (SELECT 1 FROM Reservation Re
WHERE Ro.Id = Re.Room_Id
AND ([yourStartDate] BETWEEN Re.Reservation_DateFrom AND Re.Reservation_DateTo
OR [yourEndDate] BETWEEN Re.Reservation_DateFrom AND Re.Reservation_DateTo)
)
it'll grab rooms that don't have any reservations that collide with your date range.
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I stored the month name in database as string which looks like
Apr-2013
May-2013
...
How could i sort the table month wise ?
Any help is appreciated.
You will have to format the date in order to sort it:
select aDate from t
order by str_to_date(aDate,'%b-%Y')
This is very inefficient, though. I'd recommend you to update that field and make it a date field or at least two ints: one for the month and one for the year. Then, if you need to get the name of the month you could use the monthname(date) function.
SELECT
*
FROM
dates
ORDER BY
STR_TO_DATE(date, '%b-%Y')
SQL Fiddle
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I can't find an answer to my question, it's probably easy but... anyway!
I have a database with every NHL game for one specific team in a table. Every game has been entered in the good order.
On my home page, I would like to display the upcoming game as well as the result of the previous game. How can I create a mySQL query to display the previous game based on today's date?
Thanks!
Do your game records have a timestamp or datetime value?
If so you could write a query ordering your games by the date smaller that now() and limit by one.
The query should look like this:
select * from games where gamedate < now() order by gamedate desc limit 1
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I've got a food menu which needs to have a pattern for when certain menus are displayed on a website.
For example, the pattern is split into yearly quarters, weeks and days.
**Quarter 1**
**Week 1**
Monday: 5
Tuesday: 4
Wednesday: 5
Thursday: 4
Friday: 6
Saturday: 7
Sunday: 7
The numbers represent the ID of the menu in the database.
So I have 4 quarters, 4 weeks and 7 days in the database. This is how it's laid out:
I don't get how to write the query to update the database, say for example I want to update the following:
I want to put Menu Number: 4, In Week 1, Quarter 1 on a Thursday? That is based off what they select on a HTML Checklistbox.
For your example the query could be something like this.
UPDATE menuset
SET thursday = 4
WHERE week = 1
AND quarter = 1
Something like this should work for you
update tablename SET monday=$monday WHERE week=$week AND quarter=$quarter
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I want to retrieve (stratageeks,HCL,IMIMobile) value from the table where user_id=wordpress how it possible
This is my Table
id user_id company_name number_save
---------------------------------------------------------------
1 wordpress Stratageeks 1
2 Manju Stratageeks 1
3 Manju Wipro 2
4 wordpress HCL 2
5 wordpress IMIMobiles 3
SELECT company_name FROM table WHERE user_id='wordpress'
You should consider learning basic SQL if you plan on doing this in the future.
If you want distinct results, use:
SELECT distinct company_name FROM table WHERE user_id='wordpress'
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I am using mysql as database and saved time as time stamp of related posts in table, now i want to fetch the post made rrecently . How can i compare and fetch the post made recently?
you can fetch rows in descending order of your column (time_stamp).
ex:
SELECT * FROM Table_Name ORDER BY col_time_stamp DESC;
col_time_stamp : is the column
select top 1 * from posts order by timestamp desc
try this
SELECT * FROM Table_Name ORDER BY col_time_stamp DESC LIMIT 0;