Question : The database I’m using has multiple tables storing different information types…it’s very convoluted. I’m trying to join this […]
Tag: join
Slow query with multiple INNER JOIN (via table)
Question : This is my first question here. I have a project written in PHP running on windows server and […]
How could I get the value as Y or N in one table if value is exists on another that meets certain condition?
Question : I have to generate simple report from three tables named customer, product, and order. My report should have […]
Proper SQL code for retrieving all rows from three tables, one of them is like a man-in-the-middle [closed]
Question : Closed. This question is off-topic. It is not currently accepting answers. Too localized – this could be because […]
Join MySQL Lookup tables
Question : I have the following MySQL tables: games genres game_genres Games can have many genres (action, fighting, horror), so […]
LEFT JOIN not joining the second table
Question : I’m having a problem with my SQL command running on MariaDB. I have the following tables: reservations: id […]
Generate multiple running totals with GROUP BY day
Question : I have a set of transactions of stock purchases by users and I want to keep track of […]
Shouldn’t mysql be using both indexes in a join?
Question : I have the following tables: CREATE TABLE `tx_in` ( `id` int(10) unsigned NOT NULL AUTO_INCREMENT, `txid` char(64) DEFAULT […]
DISTINCT Query on an INNER JOIN
Question : I have two tables, one (ARTISTS) with a list of different artists, details and biographies, but no images. […]
Optimizing a query comparing inner joins of a table to itself
Question : I have a table obj_param_value_log with the following structure: object_id: int param_id: int date: date value: real So, […]