left-join

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How do I remove duplicate entries in this T-SQL query containing LEFT OUTER JOIN

I am having issues taking out duplicate entries from this query containing multiple LEFT OUTER JOINs SELECT s.Category,[详细]

2023-04-08 18:44 分类：问答
Sqlite3 / Webpy: "no such column" with double left join

I am trying to do Sqlite3 query via webpy framework.The query works in SQLiteManager. But with web.db i get \"sqlite3.OperationalError no such column a.id\".[详细]

2023-04-08 12:40 分类：问答
MySQL Left Join + Min

Seemingly simple MySQL question, but I\'ve never had to do this before.. I have two tables, items and prices, with a one-to-many relationship.[详细]

2023-04-08 05:01 分类：问答
Mysql Puzzle : Conditions in ON vs. WHERE

The following two queries do not return the same result. Why ? Note : I found this question as a Mysql puzzle, I don\'t have more data on this question?[详细]

2023-04-08 04:30 分类：问答
Left join on multiple column performance?

Assume that I have 2 tables : table1 :(20.000 records) idcode1code2somethingstatus table2: (7.500 records)[详细]

2023-04-08 02:54 分类：问答
How can I substitute a left join in SQL

Can anyone tell me how can I write the equi开发者_运维技巧valent of a left join without really using left joins.[详细]

2023-04-06 19:53 分类：问答
MySQL - complicated LEFT JOIN

I have that one-to-many relationship going here.Plus, not all \"primary\" records will have a joined record in the second database table.[详细]

2023-04-06 15:14 分类：问答
ORDER BY in UNION query

I seen topics explaining this but in my case it does not work. I have query ( SELECT * FROM my_table left join table2 on table2.id = my_table.id[详细]

2023-04-06 11:50 分类：问答
Left join, how to specify 1 result from the right?

This one is fairly specific, so I\'m hoping for a quick fix. I have a single result in my leaderboard table for each team. In my teams table, I have several results for each team (one result per game[详细]

2023-04-06 07:09 分类：问答
MySQL: How to Select All Results That Don't Match LEFT JOIN

My SELECT statement is essentially: SELECT *, user.user, response.survey FROM survey, user, response ORDER BY survey.added[详细]

2023-04-06 02:09 分类：问答