left-join

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Problem with nested left-joins and coalesce

I have strange issue with nested left-joins in postgresql... It\'s hard to explain, but easy to show =) here we are:[详细]

2023-03-26 20:00 分类：问答
Use joined value in where clause

I want to use a where statement on a value from a joined table. Can\'t figure it out: SELECT item.*, count(articles.authorid) AS articlecount[详细]

2023-03-26 17:52 分类：问答
mySql Join optimisation query

I am trying to optimise my site and would be grateful for some help. The site is a mobile phone comparison site and the query is to show the offers for开发者_高级运维 a particular phone. The data is[详细]

2023-03-26 15:01 分类：问答
Odd MySQL behavior with LEFT JOIN

I\'ve got a weird question. I have a user table where each user has a unique user id. Users are able to post comments (tips) which are saved to a different table, each comment row also has a unique ID[详细]

2023-03-26 14:41 分类：问答
Include third table in LEFT JOIN query

I have five mysql tables. shops +----+--------------+--------------+ id | name| address| +----+--------------+--------------+[详细]

2023-03-26 11:14 分类：问答
MySQL multiple row joining

I have an issue with joining of tables that I have not managed to solve. Somehow I have the impression that it is more simple than I think. Anyhow:[详细]

2023-03-26 08:57 分类：问答
Left join/foreign key question for mysql in php

I have tables queue and requests. queue\'s reqID is a foreign key to requests\' reqID. both tables have vanID[详细]

2023-03-26 06:44 分类：问答
SQL Left Join - same results multiple times

I have the following tables: users id | name info id | info | user_id (user_id from table info is foreign key => connects to id from table users)[详细]

2023-03-26 01:43 分类：问答
1k entries query with multiple JOIN's takes up to 10 seconds

Here\'s a simplified version of the structure (left out some regular varchar cols)开发者_开发百科:[详细]

2023-03-25 23:10 分类：问答
JOIN Multiple Tables with Many to Many Relationship

I have around 30 tables. eg: producer, director etc related to movies each table consists of movie_id and celeb_id field[详细]

2023-03-25 20:39 分类：问答