Question : I have two tables in my project: “cats” and “items”. Every single item in “items” table has the […]
Tag: count
I was interrupted while transferring a very large table. How can I pick it up from where it stopped?
Question : I wrote a python script to select and insert rows between tables in different databases (from SQL Server […]
Fastest query for distinct IDs in a many-to-many relationship
Question : I have this table in PostgreSQL 9.4: CREATE TABLE user_operations( id SERIAL PRIMARY KEY, operation_id integer, user_id integer […]
How to count the number of rows by datetime field with the division into time intervals
Question : I’m using Oracle Database 10g. There is a table with information about clients: +—-+——+———————+ | id | name […]
Get two row counts from the same table [closed]
Question : Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? […]
SQL Join and Count
Question : I have 3 tables in SQLServer that I want to join so I can count the number of […]
Optimize slow COUNT in MySQL subquery
Question : I have the following query that takes minutes to complete: SELECT DISTINCT Designation, Model, ( SELECT COUNT( Equipment.EquipmentID […]
Update all rows with a one to many relationship count in the same table in MYSQL
Question : I am trying to update all rows of a MYSQL table with the total amount of referred users […]
Is it possible to combine these three join queries into one?
Question : I would like to combine the counts of the stats by different hit_types into one query. Is that […]
Limit the number of results but show how much would be returned
Question : I have a big problem in T-SQL with large amount of data where I need to limit number […]