This question already has answers here:
Find total number of results in mySQL query with offset+limit
(7 answers)
Get total number of rows when using LIMIT? [duplicate]
(1 answer)
Closed 5 years ago.
I am using LIMIT to retrieve paginated results from a mysql database. However I am looking to find the total number of rows with my select function without using another query. I have found that mysql has a function called FOUND_ROWS() to do this. Any way to use this in nodejs or maybe another method to get the result?
Related
This question already has answers here:
SQL split values to multiple rows
(12 answers)
Closed 4 months ago.
I have data stored as text within a MySQL database that has values separated by newlines which I need to split into rows. A single text field might look like this:
---
'2022-06-19': no_capacity
'2022-06-20': no_capacity
'2022-06-21': available
'2022-06-22': available
...
Yes this is an example of a single text field. There can be anywhere between 100-500 \n's. The dates themselves are also unpredictable.
I need each one of these 'rows' within the entry to be returned as an actual row in a table (and then columns split on the colon, but that is less important).Can this be done using a MySQL query?
You should be able to use something similar to this answer but for a newline character. This can't be done using a regular Mysql query, but rather a stored procedure similar to the answers in that post, which I'm not familiar with. Not sure if this helps, other answers might be necessary.
This question already has answers here:
MySQL convert time minutes_seconds into seconds
(2 answers)
function for converting time to number of seconds
(7 answers)
How to convert time from hh:mm:ss.mmm to seconds and milliseconds mysql
(1 answer)
Closed 11 months ago.
Hi all, I'm new to SQL and don't know anything about this DB. I need help in solving the following problem.
I want to convert the TimeC column into seconds and make a new column beside it. For example, in the very first row which has the value 00:08:22, I would like to know how many seconds have gone passed since 00:00:00
This question already has answers here:
Difference between two dates in years, months, days in JavaScript
(34 answers)
Obtain difference between two dates in years, months, days in JavaScript [duplicate]
(2 answers)
How to count month and days between two dates through JavaScript?
(2 answers)
Closed 2 years ago.
I have some problem making my website.
I want that it should display how many years, months and days have been passed from a specific date.
I haven't tried anything till yet. I am very new to website building.
This question already has answers here:
How to get the number of days of difference between two dates on MySQL?
(8 answers)
Closed 4 years ago.
Trying to find the DATEDIFF between two dates and display it as it's own column.
Here are my current columns:
currentcolumns
And here is what I need:
needed
Here is the code I have been running with error:
SELECT orderNumber, DATEDIFF(day,orderDate,shippedDate) AS day FROM datenumtest;
The error I get says: #1582 - Incorrect parameter count in the call to native function 'DATEDIFF'
I've looked at a ton of sites now and can't seem to see what the issue is. Ideas?
MySQL's DATEDIFF function just takes two parameters:
SELECT orderNumber, DATEDIFF(shippedDate, orderDate) AS day
FROM datenumtest;
Note the order of the date parameters used, which would return some positive number of days assuming that the shipping date be greater than the order date.
DATEDIFF function in MySQL only supports two input parameters, whereas SQL Server variant of the function supports to derive days, month etc by passing in the additional parameter.
This question already has answers here:
Find and replace entire MySQL database
(12 answers)
Closed 9 years ago.
I have a wordpress website and I'm going to change it's URL. The problem is that when I search for its actual URL in the database, I have like 200 results.
I would like to search in the whole database for the actual url and replace it with the new one.
I know that if I have the exact table and exact column, I can do :
UPDATE
Table
SET
Column = Replace(Column, 'find value', 'replacement value')
But how can I generalize this code to my whole database ?
Thank You !
Perhaps not the best, one solution is to export the whole database, open the sql file in a text editor, perform the search-replace and importing again.