As shown in the image. I have a table with Id, OrderId, SubId. For which the some row values in SubId column is zero as shown in the left table in the image. I have to update the SubId rows which are …
MariaDB using ‘distinct’ keyword changes expected behavior of other column
Why does this work: SET @cnt = 0; SELECT (@cnt:=@cnt+1) AS ‘foo’, title FROM employee; But when I add ‘distinct’ keyword, it does not, while distinct works on its own (not shown). SET @cnt = 0; …
Delete rows from table using JOIN – SQL Server
I have a table_A – id | name | is_active | —-+———+————+ 1 | jon | 1 | 2 | ham | 0 | 3 | gary | null | I have a table_B – id | name | -…
Django QuerySet annotate with Subquery
given the following model I’m trying to get, my Pizza and the number of toppings, along with the top 3 other pizzas (top in terms of the number of toppings) The final result should be: a list containing the current pizza, and the top 3 pizzas, along with the count of toppings for all. So right now I hav…
PostgreSQL array overlap with the ALL construct
I want to achieve the same behavior as in next example: select array[1, 3] && array[1] and array[1, 3] && array[2] using the ALL construct like so: select array[1, 3] && all(…
Oracle date format while using TO_CHAR()
The standard date format in any oracle table is DD-MON-YY, but I still wonder for the below query if the date will get stored into reg_date column in ‘DD-MON-YY’ format as it is the Oracle standard or …
How to check if all instances of a DB row are the same and if so count + 1 in SQL?
I have the following SQLite DB table: app | vendor | active ——————— 123 | AGX | 1 123 | OTMA | 0 123 | PEI | 0 255 | IYU | 0 255 | MAG | 0 255 | MEI | 0 675 | IUU | …
Formatting in MS Access
I am trying to format a Access table fields to include all values as in the images below. However when I copy and paste from excel to the Access table, only significant figures appear in the table. …
Select top 3 by element in JSON arrays
The source data is user_id video_interest 1 [{“category”:”a”,”score”:1},{“category”:”b”,”score”:2},{“category”:”c”,”…
how to get last 6 week start date and end date in MSSQL
For Example, today is 18 Feb 2021 then the start date will be 14 Feb 2021 and the End Date will be 20 Feb 2021. These ways for the last 3 weeks will be : week start date End Date Week 1 14 Feb 2021 20 Feb 2021 week 2 7 Feb 2021 13 Feb 2021 week 3 31 Jan