Mysql – Creating a UI from a table
I am trying to create a very basic UI. However, I am getting an error saying productName_input not defined" and same with all my other inputs. I am thinking maybe the tables I created are not correct and that is…
MYSQL – trying to find duplicated data
I have a database with a fair amount of duplicated data, i've tried a few ways if found on here but struggling with this. As you can see there are multiple in the 'owner' but diferent in 'type' and there…
MySql count column based from same table
This type of questions already asked but that is not solve my problem. I have table called scraping_data +-----------------------------------------------------------+ | id | accountId | label | subLabel | status| +-----------------------------------------------------------+ | 1 | 1 | Application | Nice | 1…
MySql – Adding columns to select degrades performance
I have a table with several million rows of data. I have a primary key on id, and a compound unique key on col2, col3, col4 and my_date (called comp_indx). Sample data is shown here... id col2 col3 col4 my_date…
combining duplicates (perhaps via CONCAT) in a mySQL LEFT JOIN
This question appears to be slightly different from some of the other questions out there dealing with duplicates on a LEFT JOIN. Here's my situation: I have a list of datapoints associated with a meter. The datapoints are contiguous but…
how to get the non existing record in a table using mysql
I have a table named 'table1' and it has some records like below. Now i have written the query like below, select value, name from table1 where value in ('1a2b3c','8s9r3h','5h2j0m','4m5m6n','8i9o7l'); In the above query returns the records which are available…
MySQL count the number of count of email occurrences separated by countries
I need to compose a MySQL query, which will count the number of email occurrences per each country I have following mysql table (shop_orders) order_id email country 1 [email protected] _it 2 [email protected] _hu 3 [email protected] _de 4 [email protected] _pl 5…
How to improve running time of mysql query that have INNER JOIN and Like search
Below is the query added by me, But it took say 0.35 second, Thoulgh it is not a large value, I am worried that the same query can cause memmory and processor load when the traffic is high on the…
Mysql – Round timestamps to the nearest half hour without omitting missing data
Situation: Imagine some script that, upon completion, inserts the current timestamp and some other data into a MySQL table. It's executed every thirty minutes, sometimes not at all, leaving gaps in the data. Goal: Have a query that fetches all…
Mysql – update sql rows with random values in a given range
I am trying to create an SQL event that updates n rows every 5 minutes in a table where id between 1 and 100. However I would like the query not to repeat the same rows on each update; for…