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Django: Adding “NULLS LAST” to query

I would like to sort a model by using Postgresql’s “NULLS LAST” option. How could it be done? I tried something like MyModel.objects.all().extra(order_by=(‘-price’, ‘NULLS LAST’)) But I get “Cannot resolve keyword ‘NULLS LAST’ into field” Answe…

Filter Table Before Applying Left Join

I have 2 tables, I want to filter the 1 table before the 2 tables are joined together. Customer Table: Entry Table: I want to Left Join so I get all records from the Customer table regardless of whether there are related records in the Entry table. However I want to filter on category D in the entry table bef…

Export data from a non-normalized database

I need to export data from a non-normalized database where there are multiple columns to a new normalized database. One example is the Products table, which has 30 boolean columns (ValidSize1, ValidSize2 ecc…) and every record has a foreign key which points to a Sizes table where there are 30 columns wi…

Calling Functions in SqlCommand

Can I use Sql Server functions in myCommand.CommandText and why? Answer If you mean, SQL Server user defined functions. Then, yes; you can use it normally like: The reason it works is because this is the way that functions are called in SQL Server directly.

Select updated rows in mysql

Is there simple way to select updated rows? I’m trying to store timestamp each time I am read row to be able to delete data that was not readed for a long time. First I tried execute SELECT query first and even found little bit slow but simple solution like but I still want to find a normal way to

Get 2 Digit Number For The Month

I have an integer column “Month” I would like to get 2 digit number for month. This is what I have tried: DATEPART(mm, @Date) It returns one digit for months January to September I am using SQL …