I would like to append a few rows to an already existing table (15 rows to be precise). What is the quickest way to do this? This works, but it seems redundant. I was wondering if there’s a solution along the lines of: Please note that I want to preserve the leading zeros for each element in my list. Th…
I need to write a query to return user_type based on all types that user was associated to in a single row
I have table with a user column and user_type column. A user can be associated to multiple user_type’s. There are a total of five different user_type’s in the column. I have a requirement to find each …
One select instead two selects with where
I have two similar select like this: I would like to simplify to one query, is it possible to write one select instead of this two? Answer Yes. One method is two columns using conditional aggregation: Another is separate rows:
How can I best implement async into my WPF application?
I’m working on a WPF application that runs SQL queries and returns a data grid of the results when pressed. Currently, the structure of my methods as I try to figure out async is as follows: Depending on the query ran, my application can get for anywhere between 30 seconds to 20 minutes. I have a progre…
Postgresql:Update text column with value from another column
I’m new to postgresql and need help with an update script where I can insert the corresponding ID between path2 and the filename if there is none.This will be done on multiple records. After update only IDs 111 and 333 will be affected and the expected is /path1/path2/111/file1.png /path1/path2/333/file…
Oracle select same id where 2 exist
so this query of this Oracle table shows 2 rows with same id all good — but there are other ids that have more than 1 entry as well so this query: works but brings back 2 different ids that both have more than 1 entry I don’t care which id I get. I just want both of the ids
How to get column names from a SQL query?
I need to put data from the SQL query into a Pandas dataframe. Please tell me is it possible to get column names the query results? I found that there is a keys() function in sqlalchemy for that but it does not work for me: AttributeError: ‘CMySQLCursor’ object has no attribute ‘keys’ …
Laravel Eloquent – Get data from 3 tables with consecutive foreign keys
I’m looking for a way to join 3 Data Tables. Laravel Query; How to fetch data from table ‘c’ by applying a query on table ‘a’? i’m new to Laravel. Answer Basically, it is not as much related to laravel it needs knowledge of the database. You can join 3 tables like this.
Split 1 row into 2 rows with % of total
create table #testdata ( ID int, Total money ) insert into #testdata ( ID, Total ) select 1, 100 union all select 2, 105 union all select 3, 110 union all …
Why PSQL create table returns [42P01] ERROR: relation does not exist
I’m new to SQL. I was trying to run sql schema, here is a part of code It returns[2020-07-03 15:28:19] [42P01] ERROR: relation “people” does not exist In fact all foreign key reference table reference not exist. When i remove the reference, the table can be created, can someone please help m…