derived-table_开发者

Derived table used several times

I need to run 3 consecutive queries using the same derived table... I\'m using MS SQL Server 2008 Select a,b,c from categories inner join (select x,y,z from derivedTable where…) …[详细]

2023-04-13 09:59 分类：问答

Grouping, counting and excluding based on column value

Although I\'ve not a complete newbie in SQL or MySQL I notice that there\'s still quite a bit to learn. I cannot get my head around this one, after much trying, reading and searching. If you can give[详细]

2023-04-12 04:06 分类：问答

Display multiple categories for single entry

I have the following tables: Category table which has an ID column, a description column, and category parent ID columns as follows:[详细]

2023-04-10 11:58 分类：问答

Replacing right join with derived table to left join

How do i write this query, with left join. since the framework i use doesn\'t support right join i need to rewrite the query. Can any one suggest me a possible solution.[详细]

2023-03-29 01:46 分类：问答

MySQL Join Optimisation: Improving join type with derived tables and GROUP BY

I am trying to improve a query which does the following: For every job, add up all the costs, add up the invoiced amount, and calculate a profit/loss. The costs come from several different tables, e.[详细]

2023-03-14 04:12 分类：问答

MySQL query with join on derived table containing group by, return most recent related record

Hi everyone I\'ve got a MySQL query which uses joins on a couple of derived tables. One of the derived queries works great, and I\'m getting the correct number of rows returned.[详细]

2023-03-08 23:33 分类：问答

Create a temporary table in a SELECT statement without a separate CREATE TABLE

Is it possible to create a temporary (session only) table from a select st开发者_开发百科atement without using a create table statement and specifying each column type? I know derived tables are capab[详细]

2023-03-01 22:04 分类：问答

Subselect in a Join - Problem

I\'ve a little Problem with a statement: SELECT p1.Modell_nr, p1.ProductID, p2.count_modlieffarbe_vl, 开发者_JAVA百科concat(p1.Modell_nr,\'_\',p1.LiefFarbe) as modfarb_id1[详细]

2023-02-13 17:18 分类：问答

FULLTEXT operations on a derived table

In my SQL Server 2008 RC2 database I have a table T that has a full text index defined on column FT.I am trying to derive a table containing column FT, then select from this derived table using a full[详细]

2023-02-03 23:28 分类：问答

Please Explain how to Express this SQL as a Single Statement using Derived Tables

For my own edification, I\'m trying to write this SQL functionality in a single statementwithout using temporary tables. For the life of me, I can\'t get the query to work without getting a MySQL \"ER[详细]

2023-01-26 04:44 分类：问答