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How to returns number of rows incrementally based on column values

I have departments and issues tables. For every department there are approval levels. So if say HR department has 3 approval levels, i want the drop down to return a new alias column as Y1,Y2,Y3. Similarly if finance has 2 it should return Y1 and Y2. Is it possible in sql? As of now the first alias column is …

Select count(column) from table of mysql in php

I have a database and I am trying to make a website and connect it to my database. I am trying to count the number of instances in a column but I am having trouble. I have this so far: Answer I hope you have the connection done. Here something is column which you are using to filter the output

Update field with a shorter string

I need to modify the LENGTH of text in field in db mysql. I’ve attribute_name that I need to have with max LENGTH 28 characters. WordPress and woocommerce limit this field to 28 characters. Right now my website is down because some taxonomies are too long. There is a way to “cut” all attribu…

Merge Two JSON array columns in Mysql 8

I am using Mysql (version > 8). I have a table where I am storing unique customer ids for the day in an JSON field as an array. I need to query for all unique customers in last 30 days. I am unable to find an equivalent mysql query for the same. I am using JSON_ARRAYAGG to first merge all

Update next record based on last updated record

I’m struggling to find a solution to update the calculation in the same table based on last updated records order by select column. I have tried LEAD & LAG, but can’t give complete solution of my problem. I tried below query but didn’t succeed. I can use a while loop, but there are more …