Left Join Mutliple Tables
I have this query: SELECT articles . *, article_tags.art_id, COUNT( article_tags.id ) AS appres, COUNT( article_comments.art_id ) AS comms FROM articles LEFT JOIN ( article_tags, article_comments ) ON ( article_tags.art_id = articles.id AND article_c
Get values from two rows based on values in one row when left joining two tables.
I have two tables, one with a list of users like so: "users" table user_id user_type user_first user_last 22 admin Bob Bobson 34 author Sally Sallerton And one with let's say forum posts like so: "posts" table post_id post_author post_admin 7856 34 2
LEFT JOIN multiple tables
I have been to this site countless times reading the forums getting my questions answered and it is much appreciated. One question I have is about LEFT JOINS. I have a roster for a module in PHPNuke I did called MILPACS. The development site is locat
Left Join two tables---so slow!
I'm trying to find all members in the CBA table who have a record in either the DUES_PAID table with 2008 in the DUES_Year column or who have 2009 in the itemname column of paypal_payment_info. This works but takes about two minutes! Any suggestions
MySQL Left join multiple tables
I want to join more than one table using left join. I have a table that stores shop profile where id field is primary key. This id field is foriegn key in orders, products and customers table. Now i want to show a listing in one query. I tried follow
MySQL how to optimize left join two tables?
Hi,please to help me to solve the following problem. I want to join two table，using the following clause: create table a as select b.*,c.* from b left join c on b.pno=c.pno. Both in table b and c, I create index on pno. There are 100,000 items in tab
MySQL Bad performance left join on table keys
Today I migrated an MS Access database to the latest MySQL containing interface files I have to compare, because Access is grinding to a halt as the DB is growing. I am converting a legacy interfacing system and I have to make sure that the new syste
Left Joins where tables are query sources
I'm building an incredibly irritating omnibus report for one of my managers and I'll confess I'm stuck. I've managed to cram 5 queries into one, but I can't for the life of me figure out how to join them, right now I'm using an = operator in the wher
MySQL How to left join a table to itself and show all the options in a column.
I have the following sample table. +---------+-------+ | REGION | PRICE | +---------+-------+ | CENTRAL | 10 | | METRO | 10 | | CENTRAL | 20 | +---------+-------+ If I run the following query notice I get both REGION columns. mysql> SELECT REGION,
left join 2 tables multiple times
I am having a bit of a dilemma I have products in a table with multiple categories and need to retrive each relationship as its value (foreigne key as value) this would be simple if it were a single relationship connection but I need to relate the tw
Can I LEFT JOIN more than two tables
Let's see if I can describe this succinctly: I have several tables that I want to join. Primarily, I'm looking for invoice records (invoices) which don't have any line item entries (in transactions). Here's a query which works: select invoices.ID, in
Oracle Left Join gives no row despite first table not being empty
I'm using Oracle 18.104.22.168 on windows. I'm having this strange situation : select count(*) from folder; -> 410 If I left join this table with another one, I expect to have at least 410 rows: SELECT DISTINCT F.keyfolder,DFV5.val_string AS SLC4 FROM f
Oracle Add third table with Left Join
I have written the following query. SELECT /*+NO_MERGE(INV1)*/ vbc.acc_rk FROM a vbc LEFT JOIN b stfc ON vbc.acc_rk = stfc.acc_rk LEFT JOIN (SELECT MAX (src.party_src_rk), acc_rk, country_cd FROM rcdwstg.stg_fin_acc_party_src src, rcdwstg.stg_party_s
LEFT JOIN more than 2 tables?
OK, I have three tables: tb1, tb2, tb3 with fields below: + tb1: id, id1, id2 (main table) + tb2: id1 + tb3: id2 How to make a select statement with left join three tables, display all fields in three tables? In 'id1' and 'id2' in table tb1, one of t
Oracle Left join for three tables
I have written the following sample query, SELECT a.acc_rk FROM a, b, c WHERE a.acc_rk = b.acc_rk AND b.acc_rk = c.acc_rk; Now i need to change equi join to Left join I have to Left join table "a" with table "b" and again i need to do Left join "b" t
MySQL Slow left join query because of SUM operator
I have to tables ... CREATE TABLE `treffen_allgemein` ( `tid` int(11) NOT NULL AUTO_INCREMENT, `uid` int(11) NOT NULL DEFAULT '0', `ort` longtext NOT NULL, `datum_start` int(11) NOT NULL DEFAULT '0', `datum_ende` int(11) NOT NULL DEFAULT '0', `uhrzei
MySQL LEFT JOIN confusion...
there, like every other MySQL novice alive I'm having trouble with LEFT JOIN. All the examples and tutorials I find online are either absurdly simply, or horribly convoluted, and I'm having trouble grasping a key principle. Let's say you have these t
join a table based on a previously joined tables column value
I need to join a table thats name is a value in another table that was joined onto the query, here is my query: SELECT * FROM flare_objects_obj LEFT JOIN flare_objects_links ON (flare_objects_links.group_id = flare_objects_obj.id) LEFT JOIN flare_obj
Double Left Join?
Helllo.... I need to do a query that left joins a table conditionally. select t.*, v.vwap, a.moniker,v.dateTime from accounts a, stocks s, trades t left join vwaps v on t.[date] = v.dateTime where a.accountNumber = t.accountNumber AND t.symbol = s.sy
Left Join + count
Can I left join another table and istead of outputting it's results, just count how many instances of a particulat item entered into that table. Something like that?... SELECT * FROM table1 LEFT JOIN table2 ON ( table1.item1 = table2.item2 ) COUNT ta