Query optimization on Postgresql
SQL optimization problem, which of the two solutions below is the most efficient? I have the table from the image, I need to group the data by CPF and date and know if the CPFs had at least one login_ok…
SQL optimization problem, which of the two solutions below is the most efficient? I have the table from the image, I need to group the data by CPF and date and know if the CPFs had at least one login_ok…
I'm trying to figure out why the outer query returns nothing if the second sub query has no return value even if the first does? SELECT * FROM ( SELECT category_id FROM story_category WHERE story_category.story_id = 9998 ) AS c,…
I tried to find the solution to this on Stackoverflow, maybe my wording is wrong. I have a query which takes to long to execute. I am sure there are simple ways to improve it. For example, I use the…
Server: MariaDB, version 10.4.17 Query: select something from (select 1, 2 as something) Error in phpMyAdmin: #1064 - Something is wrong in your syntax 'LIMIT 0, 25' Error in MySQL Workbench: You have an error in your SQL syntax; check…
enter image description here My table has data as shown in the picture. I selected the SiteInstanceID value based on a selection from another column "AttributeValue". SELECT `SiteInstanceID` FROM `sitecomponentattributevalues` WHERE `AttributeValue` = 00069 Now I want to select all…
So I currently have a database with the following structure: wp_giantbomb_game_list(post_id, important) wp_game_attribute_company(ID, important) wp_game_relation_publisher(ID, game_id, attribute_id) wp_game_relation_developer(ID, game_id, attribute_id) The important tag is a boolean that says whether or not a game is important. What I currently do is…