Lab Sql

I want to move multiple SQLite files to PostgreSQL. Data contained in these files are monthly time-… Read more Sql - Multiple Tables Vs One Big Table

I have data in Hive table which look something like this - I would like to get a summarized data w… Read more Sql Return The Record Where The Value In A Column Have Changed

Notice: I am using a Y-m-d date format throughout this post. So I have a database containing three … Read more Postgresql: Calculate Share Of Total Investment Per Investor, Per Day

I want to filter some data by both yyyymmdd(date) and hhmmss(time), but clickhouse don't suppor… Read more How To Select Data Basing On Both A Period Of Date And A Period Of Time In Clickhouse

I want to move multiple SQLite files to PostgreSQL. Data contained in these files are monthly time-… Read more SQL - Multiple Tables Vs One Big Table