join

MySQL joining four tables and using WEEK and DATEDIFF to get current data?

Hi! I'm trying to write a query getting information from four tables and I'm not able to figure it out. Can someone please help me with some guidance? The model is that a user can book a room for a specified time period. I would like to retrieve the data that is current for the next seven days so I'm using WEEK and DATEDIFF. The DATEDI...

Procedurally transform subquery into join

Is there a generalized procedure or algorithm for transforming a SQL subquery into a join, or vice versa? That is, is there a set of typographic operations that can be applied to a syntactically correct SQL query statement containing a subquery that results in a functionally equivalent statement without a subquery? If so, what are they (...

Trouble with chaining joins

I was wondering if someone could help me with chaining joins - I'm not understanding the thought process. An example with three tables: ArticleCategories ----------------- CategoryID CategoryName Articles --------- ArticleID ArticleText CategoryID (FK) ArticleComments ----------------- CommentID ArticleID (FK) CommentText I have ...

Search function, SQL Server

Hello! I am creating a small search function on my site, this enables the search for articles in the system. Each article has a set of keywords associated to it and these keywords are stored inside a SQL Server database. This is the table: CREATE TABLE [dbo].[SearchWords] ( [ID] [int] IDENTITY(1,1) NOT NULL, [ArticleID] [int] ...

Calculating from self-join

I have a list of values and dates for stock ticker symbols and want to calculate quarterly returns in SQL. CREATE TABLE `symbol_details` ( `symbol_header_id` INT(11) DEFAULT NULL, `DATE` DATETIME DEFAULT NULL, `NAV` DOUBLE DEFAULT NULL, `ADJ_NAV` DOUBLE DEFAULT NULL) For fixed quarter start and end dates that works fine: set...

php gd: create new image based on combine/join 3 images, and then rotate the new image

Basically I have 3 png images. They have the same height and different width. I want to create a new image on the fly, then join the 3 images (not merging, I want to respect the content of each image) and put them on the new image. After that I wanto to rotate that new image. I want to do it with php GD. If someone can give me an ide...

Multi Join Linq Statement

Is this the proper way to accomplish joining 3 (or more) tables with LINQ (to SQL)? Especially the select portion. Am I on the right track to return a single record(row) of data that spans across the tables? public static DataTable GetCurrentEmploymentQuestionnaire(Guid employmentQuestionnaireID) { var Questionnair...

SQL primer: Why and how to use join statements?

I have a MySQL database that looks like this: users ( id , name ) groups ( id , name ) group_users ( id , group_id , user_id ) Now to look up all the groups that a user belongs to, I would do something like this: select * from 'group_users' where 'user_id' = 47; This will probably return something like: ( 1 , 3 , 47 ),...

MySQL: Join two tables with different number of rows and one same column name

Hi, i have two tables "*TABLE_A*" and "*TABLE_B*", and i want to connect them the same way like in "*RESULT_TABLE*". TABLE_A: +-----------+-----------+---------+ | row_id | category | val_1 | +-----------+-----------+---------+ | 1067 | cat1 | 6.5 | | 2666 | test | 6.5 | | 2710 | cat1 | 2.1...

MS Reporting Services - columns from DataSource in one Textbox

I have the DataSource which returns columns ItemsName and I need to join these all names into one Textbox. The output should look like: "ItemName1, ItemName2", ItemName3, ..." I cannot figure out how use =Join() to do that. Thank you for any help. ...

Oracle JOIN USING + Subquery : ora-00904 string: invalid identifier

Hi, i m having a little syntax problem in my query (simplified) : select * from table1 t1 inner join table2 t2 using (pk1) inner join table3 t3 using (pk2) where not exists (select1 from table4 t4 where t4.pk1 = t1.pk1) By using the "using" keyword, oracle doesnt allow table identifier in front of the column name (eg : t1.pk1, only p...

DB2 varchar index join

For DB2... table1.a is varchar(30) and has an index on it. table2.b is varchar(45) and has an index on it. Will table1.a = table2.b use the index on table1, table2, or both? Although it would seem obvious that it should use both indexes, I'm asking because I believe on sybase, this would only use one of the indexes (I'm not sure which...

MySQL - What JOIN should i use? 2 Tables, Not the same number of members

so i have 2 tables: -char (keeps information about the player) -special (its a rank for top mobs, so each line from this table is a record of all the players that killed a mob and the total time) here's a summary i wrote: ################## ## table char: ## ################# `char_id` - int(12) auto increment - primary key `type` - va...

table join where

Table1 t10 (id) id --- 1 2 table t11(a1,a2,a3) a1 a2 a3 ---------- 1 10 a 1 10 b 1 11 b 1 12 c 2 20 d 2 21 e select * from t10 a,t11 b where a.id = b.a1 how to display id a1 a2 a3 -------------- 1 1 10 a 1 1 10 b //(not display this row) 1 1 11 b //(not display this row) 1 1 12 c /...

Most concise and complete Recursive Association Support in CakePHP?

I'm currently mucking about with CakePHP, deciding if I'll use it in an upcoming web application. The problem is, I've got several tables which at some point share relevant data with each other. If I were to write all the code myself I would use an SQL query using rather a lot of different joins and subqueries. But from what I understan...

Java JPA Inner JOIN with WHERE statement

Hi folks, I want to annotate following structure: I have this query: SELECT A.*, BES.*, BES_2.* INNER JOIN BES ON A.a = BES.a AND A.b = BES.b INNER JOIN BES AS BES_2 ON A.a = BES_2.a AND A.b = BES_2.b WHERE (BES.c = N'foo') AND (BES_2.c = N'bar') I have the entities Job (representing A) and JobEndPoint (representing BES). The Job...

PHP PDO MYSQL JOIN

I have a table called cms_page in which each page has an ID. I want to pull all the information from this table and all the information from cms_page_part table where page_id is equal to the ID i send to the page...confusing i know but here is my attempt: require '../../config.php'; $conn = new PDO(DB_DSN, DB_USER, DB_PASS); $id = (in...

Linq query across three levels of tables to generate sum

I have a series of tables that are joined with Primary Key/Foreign Key relationships. I have a table of Transactions, and each Transaction references one and only one Product. Each product can exist in one and only one Category: Categories Products Transactions ------------- ------------- ----------------- ...

How do I create an absolute URL from two components, in Perl?

Suppose I have: my $a = "http://site.com"; my $part = "index.html"; my $full = join($a,$part); print $full; >> http://site.com/index.html What do I have to use as join, in order to get my snippet to work? EDIT: I'm looking for something more general. What if a ends with a slash, and part starts with one? I'm sure in some module, some...

SQL Join Question

Hi All, I will be joining multiple tables all with the same columns, is there anyway so setup the query so the specific table prefix is not needed? Or am I trapped into using select a._id,b._id....z._id ? ...