inner-join

Insert using LEFT JOIN and INNER JOIN

由 依然范特西╮ 提交于 2019-11-27 05:16:34
问题 Hey all i am trying to figure out how to go about inserting a new record using the following query: SELECT user.id, user.name, user.username, user.email, IF(user.opted_in = 0, 'NO', 'YES') AS optedIn FROM user LEFT JOIN user_permission AS userPerm ON user.id = userPerm.user_id ORDER BY user.id; My INSERT query so far is this: INSERT INTO user SELECT * FROM user LEFT JOIN user_permission AS userPerm ON user.id = userPerm.user_id; However, i am not sure how to do VALUE('','','','', etc etc)

SQL Inner join more than two tables

由 烂漫一生 提交于 2019-11-27 03:27:27
I can currently query the join of two tables on the equality of a foreign/primary key in the following way. $result = mysql_query("SELECT * FROM `table1` INNER JOIN `table2` ON table1.primaryKey=table2.table1Id"); I'd like to extend this to multiple tables (all with the same foreign keys). I am trying the following code which is not returning anything. Can anyone point out what I'm doing wrong? $result = mysql_query("SELECT * FROM `table1` INNER JOIN `table2` INNER JOIN table3 ON table1.primaryKey=table2.table1Id=table3.table1Id"); Alex SELECT * FROM table1 INNER JOIN table2 ON table1

Update Query with INNER JOIN between tables in 2 different databases on 1 server

由 旧时模样 提交于 2019-11-27 01:27:06
问题 Need some SQL syntax help :-) Both databases are on the same server db1 = DHE db2 = DHE_Import UPDATE DHE.dbo.tblAccounts INNER JOIN DHE_Import.dbo.tblSalesRepsAccountsLink ON DHE.dbo.tblAccounts.AccountCode = DHE_Import.tblSalesRepsAccountsLink.AccountCode SET DHE.dbo.tblAccounts.ControllingSalesRep = DHE_Import.dbo.tblSalesRepsAccountsLink.SalesRepCode I can do a query in Access with linked tables with similar syntax - BUT SQL doesn't like it. I'm sure it's a simple issue :-D Thanks! 回答1:

Difference in MySQL JOIN vs LEFT JOIN

由 China☆狼群 提交于 2019-11-27 00:44:33
I have this cross-database query... SELECT `DM_Server`.`Jobs`.*, `DM_Server`.servers.Description AS server, digital_inventory.params, products.products_id, products.products_pdfupload, customers.customers_firstname, customers.customers_lastname FROM `DM_Server`.`Jobs` INNER JOIN `DM_Server`.servers ON servers.ServerID = Jobs.Jobs_ServerID JOIN `cpod_live`.`digital_inventory` ON digital_inventory.jobname = Jobs.Jobs_Name JOIN `cpod_live`.`products` ON products.products_pdfupload = CONCAT(digital_inventory.jobname, ".pdf") JOIN `cpod_live`.`customers` ON customers.customers_id = products.cID

Oracle Update statement with an Inner Join

由 我的梦境 提交于 2019-11-26 23:19:18
问题 I am trying to write a simple update statement with an inner join, but the way I would do this in SQL server does not seem to be working in ORACLE. Here is the Update: UPDATE D SET D.USER_ID = C.USER_ID FROM D INNER JOIN C ON D.MGR_CD = C.MGR_CD WHERE D.USER_ID IS NULL; It seems like the error I am getting is on the FROM . Can someone explain to meet what the cause of this is and how to work around it? 回答1: In Oracle, you can't use a from clause in an update statement that way. Any of the

Eliminating duplicate values based on only one column of the table

由 浪子不回头ぞ 提交于 2019-11-26 22:23:52
My query: SELECT sites.siteName, sites.siteIP, history.date FROM sites INNER JOIN history ON sites.siteName = history.siteName ORDER BY siteName,date First part of the output: How can I remove the duplicates in siteName column? I want to leave only the updated one based on date column. In the example output above, I need the rows 1, 3, 6, 10 This is where the window function row_number() comes in handy: SELECT s.siteName, s.siteIP, h.date FROM sites s INNER JOIN (select h.*, row_number() over (partition by siteName order by date desc) as seqnum from history h ) h ON s.siteName = h.siteName and

SQL DELETE with INNER JOIN

由 核能气质少年 提交于 2019-11-26 22:21:47
问题 There are 2 tables, spawnlist and npc , and I need to delete data from spawnlsit . npc_templateid = n.idTemplate is the only thing that "connect" the tables. I have tried this script but it doesn't work. I have tried this: DELETE s FROM spawnlist s INNER JOIN npc n ON s.npc_templateid = n.idTemplate WHERE (n.type = "monster"); 回答1: Add .* to s in your first line. Try: DELETE s.* FROM spawnlist s INNER JOIN npc n ON s.npc_templateid = n.idTemplate WHERE (n.type = "monster"); 回答2: If the

data.table inner/outer join with NA in join column of type double bug?

由 空扰寡人 提交于 2019-11-26 20:42:18
问题 Following this wikipedia article SQL join I wanted to have a clear view on how we could have joins with data.table. In the process we might have uncovered a bug when joining with NAs. Taking the wiki example: R) X = data.table(name=c("Raf","Jon","Ste","Rob","Smi","Joh"),depID=c(31,33,33,34,34,NA),key="depID") R) Y = data.table(depID=c(31,33,34,35),depName=c("Sal","Eng","Cle","Mar"),key="depID") R) X name depID 1: Joh NA 2: Raf 31 3: Jon 33 4: Ste 33 5: Rob 34 6: Smi 34 R) Y depID depName 1:

inner join and where in() clause performance?

由 天大地大妈咪最大 提交于 2019-11-26 17:02:43
问题 I can get same result for these queries, but which one is the fastest, and most efficient? where in() or inner join? SELECT `stats`.`userid`,`stats`.`sumpoint` FROM `stats` INNER JOIN users ON `stats`.`userid` = `users`.`userid` WHERE `users`.`nick` = '$nick' ORDER BY `statoylar`.`sumpoint` DESC limit 0,10 and SELECT `stats`.`userid`,`stats`.`sumpoint` FROM `stats` WHERE userid IN ( SELECT userid FROM `users` WHERE `users`.`nick` = '$nick' ) ORDER BY `stats`.`sumpoint` DESC limit 0,10 回答1:

SQL Server - inner join when updating [duplicate]

由 独自空忆成欢 提交于 2019-11-26 15:36:56
This question already has an answer here: Update a table using JOIN in SQL Server? 10 answers I have the below query which does not work. What am I doing wrong? Is this even possible? UPDATE ProductReviews AS R INNER JOIN products AS P ON R.pid = P.id SET R.status = '0' WHERE R.id = '17190' AND P.shopkeeper = '89137' UPDATE R SET R.status = '0' FROM dbo.ProductReviews AS R INNER JOIN dbo.products AS P ON R.pid = P.id WHERE R.id = '17190' AND P.shopkeeper = '89137'; This should do it: UPDATE ProductReviews SET ProductReviews.status = '0' FROM ProductReviews INNER JOIN products ON ProductReviews
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