Postgresql – Postgres group rows based on data in one row
I am trying to group rows on a postgres query. I have one row of data that has a field with a line number in it. The next 3 rows are null. I want to set them to the same…
Convert table data into a ledger format using PostgreSQL query
I have the following data in a PostgreSQL table: id amount opening_amount closing_amount 1 200 1000 1200 2 -500 NULL NULL 3 -200 NULL NULL 4 1000 NULL NULL I want to convert this data into a ledger format, calculating…
Postgresql select nearest max value row within 30 seconds timestamp
I need to extract data from a postgres table, where I want to look at nearby records within a 30 seconds of timesstamp with two columns match and fetch the value which is having max value. id | datetime |…
How to Calculate the Difference Between Two Rows in SQL [PostgreSQL] – For Aggregated Columns
I have a table like this CREATE TABLE fake_sales ( group_id INT NOT NULL, year SMALLINT CHECK(year > 0), amount DECIMAL(10, 2) NOT NULL, PRIMARY KEY(year, group_id) ); I want to compare the current year's sale with the last year's…
Find Next row and Previous Row based on result in sql – Mysql
In this sample table fruits, I want to get previous row, current row and next row where high_low_adjstmnt < 0. Table id name low high high_low_adjstmnt volume 1 Apple 5 3 -2 1000 2 Orange 6 9 3 2000 3…
Why does using `g_application_run` create a lag of ~25 seconds? – Debian
I'm trying to learn GTK3, but the documentation is problematic at best. The most frustrating problem comes from using g_application_run. It seems to create a lag of ~25 seconds when the program is run. Here is the example: #include <gtk/gtk.h>…