Can MySql binlog have more than one open transaction?
Issue Can MySql binlog have more than one open transaction at the same time (= events of different transactions are…
Category: MySQL
Partition by, dense rank
Issue I have the following table describing patients visits: Each patient has a visit_id for which he sees a given…
How to merge two tables together with same number of rows corresponding to same id numbers?
Issue MySQL: How to merge two tables together with same number of rows corresponding to same id numbers? Can someone…
How to efficiently use MySQLDB SScursor?
Issue I have to deal with a large result set (could be hundreds thousands of rows, sometimes more). They unfortunately…
How can I select the row with the highest ID in MySQL?
Issue How can I select the row with the highest ID in MySQL? This is my current code: SELECT *…
Can anyone please explain this solution of hacker rank Binary Tree Nodes?
Issue SELECT N, CASE WHEN P IS NULL THEN ‘Root’ WHEN(SELECT COUNT(*) FROM BST WHERE P = b.N) > 0…
Finding the latest record in each window – MariaDB/MySQL
Issue In MariaDb 10.3, how to find the latest(based on timestamp) row for each window(or partition, I am not entirely…
About mysql cursor and iterator
Issue Imagine I have a mysql cursor and data read. The amount of data might be very big that I…
MySQL SORT BY starting from specific result position?
Issue I have a set of data within a database as follows: id | name | price | balance ——————————-…
How can I add "ON UPDATE CURRENT_TIMESTAMP" on a column at table creation or by alter table withoud defining its default value
Issue I am using following query to alter a table and add ON UPDATE CURRENT_TIMESTAMP on a column. ALTER TABLE…