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I'm creating a database table for images, but when I am going to insert data(img) above 20 then I can't able to insert data. My table rows only able to insert data only 20. I want insert data number of 30 or 50. So how can I fix this problem.
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CASE
WHEN DATEDIFF(CURRENT_DATE,books_transaction.date_out)>10
THEN UPDATE books_transaction SET books_transaction.fine = 50
ELSE UPDATE books_transaction SET books_transaction.fine = 100
END CASE;
END
ERROR #1054 unknown column 'date_out' in 'field list'
UPDATE books_transaction
SET fine = CASE WHEN DATEDIFF(CURRENT_DATE,date_out)>10
THEN 50
ELSE 100
END;
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I want to duplicate the last record in my table every minute, i'm using php and mysql.
I can use a cronjob to run it every minute, i know how to do that.
But i don't know how to duplicate the last row, i only have an id that auto_increment and value column.
For example :
Id, Value
10, Green
11, Green
12, Green
13, Green
I think select into is what you are looking for.
https://www.w3schools.com/sql/sql_select_into.asp
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So I have this database:
John 4.2
Robert 6
Maria 3.2
What I would want is lets say I refresh a website. And in every refresh I will get a random name from that database based on the chance of showing-> that would mean that Robert would appear more times than the other people(because of his chance)
Any way to do this? I just can't think of anything.
I've create your table with columns name and weight.
The following request return on name, depending on the weight:
SELECT name FROM table ORDER BY RAND()*weight DESC LIMIT 1;
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I would like to know how to choose the users that have the highest number of columns to match the columns of the logged in user.
order by sum matches conditions ex:
SELECT * FROM table where fColumn = 'name' and column2='value2' or colmun3='value3'
ORDER BY (
(column2='value2') + (column3='value3')
) DESC
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I have a table that have a CP value (numeric), for example, 28030, 28060, 27100 etc. And the user can introduce a number via PHP. I want to, having this number for example, 28050, order in MYSQL my table putting 28060 as the first position.
This is the basic of my table:
SELECT * FROM `tiendas` ORDER BY `CP`
ABS() will work. Here's a query that does the job:
SELECT
CP
FROM tiendas
ORDER BY ABS(CP- 28050) ASC