Category "sql"

Can PostgreSQL JOIN on jsonb array objects?

I am considering switching to PostgreSQL, because of the JSON support. However, I am wondering, if the following would be possible with a single query: Let's s

I am trying to copy a file, but getting error message

I am new to postgres, probably missing something silly like (the correct name of my directory). Can someone guide me? I am following book instructions, Practica

How to write SQL sub-query in SQL?

Here is sample data I am looking for total buying trade value and total selling trades value based on country. Here are two tables, country, and trades Table [c

How to simulate database crash in postgreSQL

I'm new into postgresSQL, in my course in "Advance database" we are given a problem to simulate a crash at given location in postgres, is anyone got an idea how

Subtract count from left join and inner join in SQL

I want to merge two tables and subtract the number of orders in resulting table from left join from the resulting table in inner join. This is what I have done

Running total in SQL with a reset condition

I have a data that combines inventory, sales forecast, and future supply data for different parts. I have combined it to give me a table that gives a net quanti

Snowflake error in RStudio which limits the size of rows to fetch - Error: nanodbc/nanodbc.cpp:2695: HY000

I have an issue where I kind of know what it is but do not know the solution to it. When I fetch data from an external Snowflake DB, it limits the size of the d

AEM JCR SQL2 query to find all pages contains specific component

I wish to build a sql2 jcr query to find all pages under /content that contains this component, e.g /apps/platform/aem-core/components/content/form/form I read

SQL data, selecting and searching in the same table

id1 id2 v1 v2 v3 P1 I1 A B C P1 I2 D E F P2 I1 A B D P3 I1 A D E P2 I2 B D E How can I get from the table above to following: First, I need all entries with a

Is there a faster way of using NOT LIKE for a long list of search terms instead of {AND "Column" NOT LIKE '%word1%'} etc, in an SQL Query?

So I'm trying to exclude a bunch of different entries with specific words from my query and I was wondering if there was a more efficient/faster way of doing th

Dynamic SQL Query in C#

I'm trying to create a query with a variable number of parameters, giving to the program the name of the table and an Array for the names of parameters and anot

SQL guest house - finding an empty room on a given date

I'm attempting to learn SQL and currently doing the guest house questions found on sqlzoo. I'm stuck on Question 13 and can't seem to figure it out how to fix i

SQL How To Display Month Difference Between Return And Purchase Date

I need help with writing the query that will say month difference between return and purchase dates, see the example below. Product PurchaseDate (dd/mm/yy) Ret

SQLite3 database is Locked in Azure

I have a Flask server Running on Azure provided by Azure App services with sqlite3 as a database. I am unable to update sqlite3 as it is showing that database i

How do I use the same parameter multiple times in my Query using JPA?

How do I use a parameter multiple times in the same query? Here is my Query: @Query(value = """ SELECT * FROM person WHERE first_name = ? or last_name =

Hibernate createNativeQuery returns duplicate rows

I have 2 database tables Customer and Items with 1 -> many relation. To fetch data from database i am using the following query. select customer.id, cust

Using Distinct in Aggregate Select query

I am using oracle DB. I have a Aggregated script. We found that some of the rows in the table are repeated, unwanted and hence, is not supposed to be added in

How to Check Which Record is non-numeric in a String Column in Delta Table

I am working on Delta table using Databricks on Azure. The Delta table contains about 100 million records with many columns. One column data type of which is S

How to get distinct value and specific count from a query

Suppose I have the following table "Person": id name friends 1 matt jim 1 matt ray 1 matt ray 2 tim fry 3 sally jack 3 sally tim 4 matt harold I want to outpu

EF Core one-one relationships

I need to configure following one-one relationship with ef-core public class Player { public long Id { get; set; } public string Name { get; set; }