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Tag: sql

In sql how do you print only the most occuring

This actually tells us which person made the most purchases. But how can i print only the top row and not have all the other rows below? Answer You want to fetch the highest ranked row(s) of your intermediate result. If you want to keep your query as is and only add the appropriate clause, use FETCH and a modified

Error: SQL Substring with the “ON” Part of the JOIN

I am using PostgreSQL and must join tables using substring. As I demonstrated below, xyz.MODEL and first three characters of “columnname” from abc Table should match. However, the query below does not work. It returns the error: Can anyone help me to correct this query? Thanks for your help already. Answer The table alias must precede the column name, not

Group elements by month three by three

I have this Standard SQL query: With the following output: You can simulate the output with: I am retreiving the entries of the last 12 months. I have already grouped and ordered them by month, but I need to also group them three by three according to the month. Moreover, as you can see in the output there are missing

Typeorm MINUS operator

I’m trying to do a set difference in SQL. I’ve discovered the MINUS operator, which seems to do exactly what I need: https://www.geeksforgeeks.org/sql-minus-operator/ I’m trying to figure out if there’s a way to use this operator via typeorm. I’m currently using connection.getRepository().createQueryBuilder(), and I don’t see any methods on the resulting query builder that look like they correspond to the

join tables from different databases only adding most recent date SQL

I am joining lots of data to handle dynamic/complex querying. The following is just a part of what I’m doing. I found a solution, then I think I tweaked it and lost it. Database Structure: oauth.users order.orders ( I know bad naming, I didn’t create the database) (customer_id = user.id) I want to join only the most recent date This

Mikro-ORM: error: there is no parameter $1

Alright so I’ve been trying to search Mikro-ORM’s docs to find how to pass in native sql query params in but I haven’t been able to find anything. After playing with the code a bit this is what it looks like which I think is sort of right but I’m getting this error My code currently looks like this Just

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