I wrote MySQL query to filter and count items in a table by date and now a need to get results like: +—–+——————–+ | cnt | creation_date_date | +—–+——————–+ | 90 | …
Tag: mysql
How to UPDATE a field from a SELECT table using JOIN
I have three tables. inspectionreport +———-+—————–+——+ | ReportID | InspectionID_id | Date | +———-+—————–+——+ inspectionreport has ReportID PK, …
Join Two table result comes as Blank in MySql
my problem is when i going to join two table altogather i ran into the problem with one table has data another table has no data but i want to display if data has one table it should display with …
SQL query to select previous 14 months where add amount ‘0’ if any month is missing
I have create this query to select the date, amount for previous 14 months, In this case the month is missing if no record is present for that month, Please suggest me a solution to add zero and month …
How to Select Max Numeric from Varchar Field in MYSQL
select userid from user; +——–+ | userid | +——–+ | .1. | | .1.1. | | .2. | | .3. | | .3.1. | | .3.1.1 | +——–+ Here I want to select the maximum number (which is 3) from the …
Get executed sql statement in pymysql
I am executing a query that is invalid, but I’d like to be able to see exactly what the query is being executed by pymysql to debug it. Is there a way to do something like: Answer As per the documentation, you should be able to do: This read-only property returns the last executed statement as a string.…
Inserting random data into a table in MySql
Could someone please help me? I don’t know what the problem here Answer You have many errors in your code Use this Procedure instead And then
How to JOIN two SQL tables to get a specific additional data based on matching id’s
I haven’t done a JOIN query in a long time, so I’m pretty rusty. What I have: a table called triggers and users. Initially, I just had a query that selected all of the information from the triggers table. This includes a user_id. Well, instead of just showing a user_id, I thought it would make sen…
Create a calendar database table like this
I would like to create a calendar SQL table like this one but for some years. (I’m using mysql 5.7.28) Date is DD-MM-YYYY Is it possible? Answer If you are running MySQL 8.0, you can use a recursive query: The recursive cte generates a list of datetimes between the given boundaries (here, that’s y…
How to use GROUP BY which takes into account two columns?
I have a message table like this in MySQL. Messages in a recepient’s inbox are to be grouped by thread_id like this: My problem is how to take recipient_read into account so that each row in the result also show what is the recipient_read value of the last message in the thread? Answer In the original q…