self-join

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MySql query to get all combinations of elements in same table field

I would like to reformat a MySql table for use in a network node mapping program. The original format is:[详细]

2023-01-29 11:49 分类：问答
Selecting rows from a table that have the same value for one field

I have a MySQL database with these two tables: Tutor(tutorId, initials, lastName, email, phone, office)[详细]

2023-01-26 23:10 分类：问答
parsing Hierarchical self-join table by tree level?

I have a self referential category table as you see: I want to parse this table to find out tree level for each category. for example if root node level is 0 开发者_Python百科then CPU and Hard Drive[详细]

2023-01-23 05:01 分类：问答
Self join to lowest occurrence of group

I have a problem in T-SQL that I find difficult to solve. I have a table with groups of records, grouped by key1 and key2. I order each group chronologically by date. For each record, I want to see i[详细]

2023-01-20 01:02 分类：问答
MYSQL: Avoiding cartesian product of repeating records when self-joining

There are two tables: table A and table B. They have the same columns and the data is practically identical. They both have auto-incremented IDs, the only difference between the two is that they have[详细]

2023-01-13 23:16 分类：问答
MySQL involving crazy multiple self-joins

As part of the process of replacing some old code that used an incredibly slow nested select, I\'ve ended up with a query that looks like this:[详细]

2023-01-13 20:28 分类：问答
Subsonic : Self Join , Table Alias

Is t开发者_如何学Gohere a way with subsonic to preform a self join?There used to be a discussion on subsonic about this, now dead. It basically said:[详细]

2023-01-09 18:47 分类：问答
recursive self query

I have the following table: myTable: +----+----------+ id | parentID | +----+----开发者_开发问答------+[详细]

2023-01-07 14:55 分类：问答
help with t-sql self join

Based on the following table IDDateState ----------------------------- 106/10/2010Complete 106/04/2010Pending[详细]

2023-01-03 09:08 分类：问答
Need some serious help with self join issue

Well as you may know, you cannot index a view with a self join. Well actually even two joins of the same table, even if it\'s not technically a self join. A couple of guys from microsoft came up with[详细]

2023-01-03 07:57 分类：问答