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• How cast in XML for aggregate functions

  - by renegm

  In SQL Server 2008. I need execute a query like that: DECLARE @x AS xml SET @x=N'<r><c>First Text</c></r><r><c>Other Text</c></r>' SELECT @x.query('fn:max(r/c)') But return nothing (apparently because convert xdt:untypedAtomic to numeric) How to "cast" r/c to varchar? Something like SELECT @x.query('fn:max(«CAST(r/c «AS varchar(20))»)') Edit: Using Nodes the function MAX is from T-SQL no fn:max function In this code: DECLARE @x xml; SET @x = ''; SELECT @x.query('fn:max((1, 2))'); SELECT @x.query('fn:max(("First Text", "Other Text"))'); both query return expected: 2 and "Other Text" fn:max can evaluate string expression ad hoc. But the first query dont work. How to force string arguments to fn:max?

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• (mySQL) Unable to query 2 tables properly for data

  - by Devner

  I have 2 tables. One is 'page_links' and the other is 'rpp'. Table page_links is the superset of table rpp. The following is the schema of my tables: -- Table structure for table `page_links` -- CREATE TABLE IF NOT EXISTS `page_links` ( `page` varchar(255) NOT NULL, `page_link` varchar(100) NOT NULL, `heading_id` tinyint(3) unsigned NOT NULL, PRIMARY KEY (`page`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1; -- -- Dumping data for table `page_links` -- INSERT INTO `page_links` (`page`, `page_link`, `heading_id`) VALUES ('a1.php', 'A1', 8), ('b1.php', 'B1', 8), ('c1.php', 'C1', 5), ('d1.php', 'D1', 5), ('e1.php', 'E1', 8), ('f1.php', 'F1', 8), ('g1.php', 'G1', 8), ('h1.php', 'H1', 1), ('i1.php', 'I1', 1), ('j1.php', 'J1', 8), ('k1.php', 'K1', 8), ('l1.php', 'L1', 8), ('m1.php', 'M1', 8), ('n1.php', 'N1', 8), ('o1.php', 'O1', 8), ('p1.php', 'P1', 4), ('q1.php', 'Q1', 5), ('r1.php', 'R1', 4); -- Table structure for table `rpp` -- CREATE TABLE IF NOT EXISTS `rpp` ( `role_id` tinyint(3) unsigned NOT NULL, `page` varchar(255) NOT NULL, `is_allowed` tinyint(1) NOT NULL, PRIMARY KEY (`role_id`,`page`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1; -- -- Dumping data for table `rpp` -- INSERT INTO `rpp` (`role_id`, `page`, `is_allowed`) VALUES (3, 'a1.php', 1), (3, 'b1.php', 1), (3, 'c1.php', 1), (3, 'd1.php', 1), (3, 'e1.php', 1), (3, 'f1.php', 1), (3, 'h1.php', 1), (3, 'i1.php', 1), (3, 'l1.php', 1), (3, 'm1.php', 1), (3, 'n1.php', 1), (4, 'a1.php', 1), (4, 'b1.php', 1), (4, 'q1.php', 1), (5, 'r1.php', 1); WHAT I AM TRYING TO DO: I am trying to query both the above tables (in a single query) in such a way that all the pages from page_links are displayed along with the is_allowed value from rpp for a particular role. For example, I want to get the is_allowed value of all the pages from rpp for role_id = 3 and at the same time, list all the available pages from page_links. A clear example of my expected result would be: page is_allowed role_id ---------------------------------------- a1.php 1 3 b1.php 1 3 c1.php 1 3 d1.php 1 3 e1.php 1 3 f1.php 1 3 g1.php NULL NULL h1.php 1 3 i1.php 1 3 j1.php NULL NULL k1.php NULL NULL l1.php 1 3 m1.php 1 3 n1.php 1 3 o1.php NULL NULL p1.php NULL NULL q1.php NULL NULL r1.php NULL NULL One more example of my desired result could be achieved by doing a LEFT JOIN rpp ON page_links.page = rpp.page but we need to omit using role_id = 3 (or any value) to be able to get that. But I do want to specify the role_id as well and get the results. I need the query to be able to get this result. I would appreciate any replies that could help me with this. If you can suggest me any changes as well to the table(s) design to be able to achieve the desired result, that's good as well. Thanks in advance.

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• Matching an IP address with an IP range?

  - by Legend

  I have a MySQL table setup as follows: +---------------+-------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +---------------+-------------+------+-----+---------+----------------+ | ipaddress_s | varchar(15) | YES | MUL | NULL | | | ipaddress_e | varchar(16) | YES | | NULL | | +---------------+-------------+------+-----+---------+----------------+ where, ipaddress_s and ipaddress_e look something like: 4.100.159.0-4.100.159.255 Now is there a way I can actually get the row that contains a given IP address? For instance, given the IP address: "4.100.159.5", I want the above row to be returned. So I am trying for a query that looks something like this (but of course this is wrong because in the following I am considering IPs as strings): SELECT * FROM ranges WHERE ipaddress_s<"4.100.159.5" AND ipaddress_e>"4.100.159.5" Any suggestions?

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• Problem with parsing SQL into table variable

  - by Stanley Ross

  I'm using the following code to read a SQL XML Variable into a table variable. I am getting the following error. " Incorrect syntax near '.'. " Can't quite Figure it out DECLARE @LOBS Table ( LineGUID varchar(40) ) DECLARE @lg xml SET @lg = '<?xml version="1.0" encoding="utf-16" standalone="yes"?> <Table> <LOB> <LineGuid>d6e3adad-8c53-4768-91a3-745c0dae0e08</LineGuid> </LOB> <LOB> <LineGuid>4406db8f-0d19-47da-953b-afc1db38b124</LineGuid> </LOB> </Table>' INSERT INTO @LOBS(LineGUID) SELECT ParamValues.ID.value('.','VARCHAR(40)') FROM @lg.nodes('/Table/LOB/LineGuid') AS ParamValues(ID)

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• script to dynamically fix ophaned users after db restore

  - by JJgates

  After performing a database restore, I want to run a dynamic script to fix ophaned users. My script below loops through all users that are displayed after executing sp_change_users_login 'report' and apply "alter user [username] with login = [username]" to fix SID conflicts verses static go statements. Although, I'm getting an "incorrect syntax error on line 15." can't figure out why... DECLARE @Username varchar(100), @cmd varchar(100) DECLARE userLogin_cursor CURSOR FAST_FORWARD FOR SELECT UserName = name FROM sysusers WHERE issqluser = 1 and (sid IS NOT NULL AND sid <> 0×0) AND suser_sname(sid) IS NULL ORDER BY name FOR READ ONLY OPEN userLogin_cursor FETCH NEXT FROM userLogin_cursor INTO @Username WHILE @@fetch_status = 0 BEGIN SET @cmd = ‘ALTER USER ‘+@username+‘ WITH LOGIN ‘+@username EXECUTE(@cmd) FETCH NEXT FROM userLogin_cursor INTO @Username END CLOSE userLogin_cursor DEALLOCATE userLogin_cursor

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• How to change a primary key in SQL to auto_increment?

  - by Jian Lin

  I have a table in MySQL that has a primary key: mysql> desc gifts; +---------------+-------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +---------------+-------------+------+-----+---------+-------+ | giftID | int(11) | NO | PRI | NULL | | | name | varchar(80) | YES | | NULL | | | filename | varchar(80) | YES | | NULL | | | effectiveTime | datetime | YES | | NULL | | +---------------+-------------+------+-----+---------+-------+ but I wanted to make it auto_increment. The following statement failed. How can it be modified so that it can work? thanks mysql> alter table gifts modify giftID int primary key auto_increment; ERROR 1068 (42000): Multiple primary key defined

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• Parse Domain from a given URL in T-SQL

  - by Adam N

  I fount this answer, but wanted to expand on the question and couldn't find any solutions here on stack or through searching google. Substring domainname from URL SQL Basically the link above solves my problem with a simple URL like parsing "www.google.com" with the result of google. What I am looking for to expand on that is the solution from the link above doesn't help with url's like 'www.maps.google.com' that just returns maps. WHat I would like is to have it return 'google' from the url 'www.maps.google.com' or return 'example' from 'www.test.example.com'. If anyone has a solution to this, I would greatly appreciate it. Update: To be more specific I will also need parsing on second level domains etc. 'www.maps.google.com.au' to return 'google' Here is my Sql function. CREATE FUNCTION [dbo].[parseURL] (@strURL varchar(1000)) RETURNS varchar(1000) AS BEGIN IF CHARINDEX('.', REPLACE(@strURL, 'www.','')) > 0 SELECT @strURL = LEFT(REPLACE(@strURL, 'www.',''), CHARINDEX('.',REPLACE(@strURL, 'www.',''))-1) Else SELECT @strURL = REPLACE(@strURL, 'www.','') RETURN @strURL END

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• How to select the most recent set of dated records from a mysql table

  - by Ken

  I am storing the response to various rpc calls in a mysql table with the following fields: Table: rpc_responses timestamp (date) method (varchar) id (varchar) response (mediumtext) PRIMARY KEY(timestamp,method,id) What is the best method of selecting the most recent responses for all existing combinations of method and id? For each date there can only be one response for a given method/id. Not all call combinations are necessarily present for a given date. There are dozens of methods, thousands of ids and at least 356 different dates Sample data: timestamp method id response 2009-01-10 getThud 16 "....." 2009-01-10 getFoo 12 "....." 2009-01-10 getBar 12 "....." 2009-01-11 getFoo 12 "....." 2009-01-11 getBar 16 "....." Desired result: 2009-01-10 getThud 16 "....." 2009-01-10 getBar 12 "....." 2009-01-11 getFoo 12 "....." 2009-01-11 getBar 16 "....." (I don't think this is the same question - it won't give me the most recent response)

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• Stored procedure optimization

  - by George Zacharia

  Hi, i have a stored procedure which takes lot of time to execure .Can any one suggest a better approch so that the same result set is achived. ALTER PROCEDURE [dbo].[spFavoriteRecipesGET] @USERID INT, @PAGENUMBER INT, @PAGESIZE INT, @SORTDIRECTION VARCHAR(4), @SORTORDER VARCHAR(4),@FILTERBY INT AS BEGIN DECLARE @ROW_START INT DECLARE @ROW_END INT SET @ROW_START = (@PageNumber-1)* @PageSize+1 SET @ROW_END = @PageNumber*@PageSize DECLARE @RecipeCount INT DECLARE @RESULT_SET_TABLE TABLE ( Id INT NOT NULL IDENTITY(1,1), FavoriteRecipeId INT, RecipeId INT, DateAdded DATETIME, Title NVARCHAR(255), UrlFriendlyTitle NVARCHAR(250), [Description] NVARCHAR(MAX), AverageRatingId FLOAT, SubmittedById INT, SubmittedBy VARCHAR(250), RecipeStateId INT, RecipeRatingId INT, ReviewCount INT, TweaksCount INT, PhotoCount INT, ImageName NVARCHAR(50) ) INSERT INTO @RESULT_SET_TABLE SELECT FavoriteRecipes.FavoriteRecipeId, Recipes.RecipeId, FavoriteRecipes.DateAdded, Recipes.Title, Recipes.UrlFriendlyTitle, Recipes.[Description], Recipes.AverageRatingId, Recipes.SubmittedById, COALESCE(users.DisplayName,users.UserName,Recipes.SubmittedBy) As SubmittedBy, Recipes.RecipeStateId, RecipeReviews.RecipeRatingId, COUNT(RecipeReviews.Review), COUNT(RecipeTweaks.Tweak), COUNT(Photos.PhotoId), dbo.udfGetRecipePhoto(Recipes.RecipeId) AS ImageName FROM FavoriteRecipes INNER JOIN Recipes ON FavoriteRecipes.RecipeId=Recipes.RecipeId AND Recipes.RecipeStateId <> 3 LEFT OUTER JOIN RecipeReviews ON RecipeReviews.RecipeId=Recipes.RecipeId AND RecipeReviews.ReviewedById=@UserId AND RecipeReviews.RecipeRatingId= ( SELECT MAX(RecipeReviews.RecipeRatingId) FROM RecipeReviews WHERE RecipeReviews.ReviewedById=@UserId AND RecipeReviews.RecipeId=FavoriteRecipes.RecipeId ) OR RecipeReviews.RecipeRatingId IS NULL LEFT OUTER JOIN RecipeTweaks ON RecipeTweaks.RecipeId = Recipes.RecipeId AND RecipeTweaks.TweakedById= @UserId LEFT OUTER JOIN Photos ON Photos.RecipeId = Recipes.RecipeId AND Photos.UploadedById = @UserId AND Photos.RecipeId = FavoriteRecipes.RecipeId AND Photos.PhotoTypeId = 1 LEFT OUTER JOIN users ON Recipes.SubmittedById = users.UserId WHERE FavoriteRecipes.UserId=@UserId GROUP BY FavoriteRecipes.FavoriteRecipeId, Recipes.RecipeId, FavoriteRecipes.DateAdded, Recipes.Title, Recipes.UrlFriendlyTitle, Recipes.[Description], Recipes.AverageRatingId, Recipes.SubmittedById, Recipes.SubmittedBy, Recipes.RecipeStateId, RecipeReviews.RecipeRatingId, users.DisplayName, users.UserName, Recipes.SubmittedBy; WITH SortResults AS ( SELECT ROW_NUMBER() OVER ( ORDER BY CASE WHEN @SORTDIRECTION = 't' AND @SORTORDER='a' THEN TITLE END ASC, CASE WHEN @SORTDIRECTION = 't' AND @SORTORDER='d' THEN TITLE END DESC, CASE WHEN @SORTDIRECTION = 'r' AND @SORTORDER='a' THEN AverageRatingId END ASC, CASE WHEN @SORTDIRECTION = 'r' AND @SORTORDER='d' THEN AverageRatingId END DESC, CASE WHEN @SORTDIRECTION = 'mr' AND @SORTORDER='a' THEN RecipeRatingId END ASC, CASE WHEN @SORTDIRECTION = 'mr' AND @SORTORDER='d' THEN RecipeRatingId END DESC, CASE WHEN @SORTDIRECTION = 'd' AND @SORTORDER='a' THEN DateAdded END ASC, CASE WHEN @SORTDIRECTION = 'd' AND @SORTORDER='d' THEN DateAdded END DESC ) RowNumber, FavoriteRecipeId, RecipeId, DateAdded, Title, UrlFriendlyTitle, [Description], AverageRatingId, SubmittedById, SubmittedBy, RecipeStateId, RecipeRatingId, ReviewCount, TweaksCount, PhotoCount, ImageName FROM @RESULT_SET_TABLE WHERE ((@FILTERBY = 1 AND SubmittedById= @USERID) OR ( @FILTERBY = 2 AND (SubmittedById <> @USERID OR SubmittedById IS NULL)) OR ( @FILTERBY <> 1 AND @FILTERBY <> 2)) ) SELECT RowNumber, FavoriteRecipeId, RecipeId, DateAdded, Title, UrlFriendlyTitle, [Description], AverageRatingId, SubmittedById, SubmittedBy, RecipeStateId, RecipeRatingId, ReviewCount, TweaksCount, PhotoCount, ImageName FROM SortResults WHERE RowNumber BETWEEN @ROW_START AND @ROW_END print @ROW_START print @ROW_END SELECT @RecipeCount=dbo.udfGetFavRecipesCount(@UserId) SELECT @RecipeCount AS RecipeCount SELECT COUNT(Id) as FilterCount FROM @RESULT_SET_TABLE WHERE ((@FILTERBY = 1 AND SubmittedById= @USERID) OR (@FILTERBY = 2 AND (SubmittedById <> @USERID OR SubmittedById IS NULL)) OR (@FILTERBY <> 1 AND @FILTERBY <> 2)) END

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• Size SKU in Magento

  - by latvian

  Hi, How can I allow SKU be longer than 34 characters (for simple products) for all products? When i add new product(simple) and enter more than 34 characters, Magento cuts it to 34 after saving. In the database the 'sku' attributes ( for quete item,order item,invoice item, shipment item) from eav_attribute table hold varchar(255). For Catalog_Product_Entity the attributed is VarChar(64). In either case, it is more than 34characters. Thus, I could change SKU to 64 characters without making any change in database, correct? How do i do that? I have good understanding of the user side magento code, but not Admin side. Can you suggest me good tutorial on making changes in Admin side that could help me figure this question myself. Thank you, Margots

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• Finding mySQL duplicates, then merging data

  - by Michael Pasqualone

  I have a mySQL database with a tad under 2 million rows. The database is non-interactive, so efficiency isn't key. The (simplified) structure I have is: `id` int(11) NOT NULL auto_increment `category` varchar(64) NOT NULL `productListing` varchar(256) NOT NULL Now the problem I would like to solve is, I want to find duplicates on productListing field, merge the data on the category field into a single result - deleting the duplicates. So given the following data: +----+-----------+---------------------------+ | id | category | productListing | +----+-----------+---------------------------+ | 1 | Category1 | productGroup1 | | 2 | Category2 | productGroup1 | | 3 | Category3 | anotherGroup9 | +----+-----------+---------------------------+ What I want to end up is with: +----+----------------------+---------------------------+ | id | category | productListing | +----+----------------------+---------------------------+ | 1 | Category1,Category2 | productGroup1 | | 3 | Category3 | anotherGroup9 | +----+----------------------+---------------------------+ What's the most efficient way to do this either in pure mySQL query or php?

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• Can I use a MySQL PREPARE statement in a function to create a query with a variable table name

  - by aHunter

  I want to create a function that has a select query inside that can be used against multiple database tables but I can not use a variable as the table name. Can I get around this using a PREPARE statement in the function? An Example: FUNCTION `TESTFUNC`(dbTable VARCHAR(25)) RETURNS bigint(20) BEGIN DECLARE datereg DATETIME; DECLARE stmt VARCHAR(255); SET stmt := concat( 'SELECT dateT FROM', dbTable, 'ORDER BY dateT DESC LIMIT 1'); PREPARE stmt FROM @stmt; EXECUTE stmt; RETURN dateT; END $$ Thanks in advance for any input.

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• Why I can't use template table in dynamic query SQL SERVER 2005

  - by StuffHappens

  Hello! I have the following t-sql code which generates an error Declare @table TABLE ( ID1 int, ID2 int ) INSERT INTO @table values(1, 1); INSERT INTO @table values(2, 2); INSERT INTO @table values(3, 3); DECLARE @field varchar(50); SET @field = 'ID1' DECLARE @query varchar(MAX); SET @query = 'SELECT * FROM @table WHERE ' + @field + ' = 1' EXEC (@query) The error is Must declare the table variable "@table". What's wrong with the query. How to fix it?

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• select mysql data using MAX

  - by JPro

  I have a testdata like this: DROP TABLE SELECT_PASS; CREATE TABLE SELECT_PASS(ID INT(20),TESTCASE VARCHAR(20),RESULT VARCHAR(20)); INSERT INTO SELECT_PASS VALUES(1,"TC1","PASS"); INSERT INTO SELECT_PASS VALUES(2,"TC2","PASS"); INSERT INTO SELECT_PASS VALUES(3,"TC3","INCONC"); INSERT INTO SELECT_PASS VALUES(4,"TC1","FAIL"); INSERT INTO SELECT_PASS VALUES(5,"TC21","FAIL"); INSERT INTO SELECT_PASS VALUES(6,"TC4","PASS"); INSERT INTO SELECT_PASS VALUES(7,"TC3","PASS"); INSERT INTO SELECT_PASS VALUES(8,"TC2","PASS"); INSERT INTO SELECT_PASS VALUES(9,"TC1","TIMEOUT"); SELECT TESTCASE, MAX(RESULT) FROM SELECT_PASS GROUP BY TESTCASE; The resultset I get is : TC1 TIMEOUT TC2 PASS TC21 FAIL TC3 PASS TC4 PASS Basically I want to see those testcases which never passed. Any way to do it? Thanks.

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• Creating a db driven primary navigation in django?

  - by Fedor

  I find that it's pretty common most people hardcode the navigation into their templates, but I'm dealing with a pretty dynamic news site which might be better off if the primary nav was db driven. So I was thinking of having a Navigation model where each row would be a link. link_id INT primary key link_name varchar(255) url varchar(255) order INT active boolean If anyone's done something similar in the past, would you say this sort of schema is good enough? I also wanted for there to be an optional dropdown in the admin near the url field so that a user could choose a Category model's slug since category links would be common, but I'm not quite sure how that would be possible.

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• SQL Server JOIN with optional NULL values

  - by Paul McLoughlin

  Imagine that we have two tables as follows: Trades ( TradeRef INT NOT NULL, TradeStatus INT NOT NULL, Broker INT NOT NULL, Country VARCHAR(3) NOT NULL ) CTMBroker ( Broker INT NOT NULL, Country VARCHAR(3) NULL ) (These have been simplified for the purpose of this example). Now, if we wish to join these two tables on the Broker column, and if a country exists in the CTMBroker table on the Country, we have the following two choices: SELECT T.TradeRef,T.TradeStatus FROM Trades AS T JOIN CTMBroker AS B ON B.Broker=T.Broker AND ISNULL(B.Country, T.Country) = T.Country or SELECT T.TradeRef,T.TradeStatus FROM Trades AS T JOIN CTMBroker AS B ON B.Broker=T.Broker AND (B.COUNTRY=T.Country OR B.Country IS NULL) These are both logically equivalent, however in this specific circumstance for our database (SQL Server 2008, SP1) two different execution plans are produced for these two queries with the second version significantly outperforming the first version in terms of both time and logical reads. My question really is as follows: as a general rule would (2) be preferred to (1), or does this just happen to be exploiting some particular idiosyncracy of the optimiser in 2008 SP1 (that could therefore change with future versions of SQL Server).

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• MySQL: check whether two fields on a model are always the same?

  - by AP257

  Sorry if this is a duplicate question, I'm a total database newbie and I'm probably using the wrong terminology to search for answers. I have a MySQL table as follows: +------------+---------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +------------+---------------+------+-----+---------+-------+ | placeid | int(11) | NO | PRI | NULL | | | grid | varchar(120) | YES | | NULL | | | vill | varchar(300) | YES | | NULL | | +------------+---------------+------+-----+---------+-------+ I'd like to find out whether 'grid' and 'vill' always occur in the same combinations or not. Maybe it'd be clearer with an example: placeid, grid, vill 1, TM1, Suffolk 2, TM1, Suffolk 3, WA8, Newcastle 4, WA8, Newcastle 5, WA8, York I'd like to construct a query that returns 'WA8' but not 'TM1', because 'WA8' occurs in combination with more than one vill. I would be SO grateful for any help!

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• How to generate .json file with PHP?

  - by Srinivas Tamada

  CREATE TABLE Posts { id INT PRIMARY KEY AUTO_INCREMENT, title VARCHAR(200), url VARCHAR(200) } json.php code <?php $sql=mysql_query("select * from Posts limit 20"); echo '{"posts": ['; while($row=mysql_fetch_array($sql)) { $title=$row['title']; $url=$row['url']; echo ' { "title":"'.$title.'", "url":"'.$url.'" },'; } echo ']}'; ?> I have to generate results.json file.

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• Maintaining the position of columns in Grails/GORM

  - by firnnauriel

  Is there a way to fix the position of the columns in a domain? I have this domain: class SnbrActVector { int nid String term double weight static mapping = { version false id(generator: 'assigned') } static constraints = { nid(blank:false) term(blank:false) weight(blank:false) } } This is the schema of the table generated: CREATE TABLE `fractor_grailsDEV`.`snbr_act_vector` ( `id` bigint(20) NOT NULL, `weight` double NOT NULL, `term` varchar(255) COLLATE utf8_unicode_ci NOT NULL, `nid` int(11) NOT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci It seems that the order of the columns were reversed. Is there a way to make it like this? (order is nid, term, weight) CREATE TABLE `fractor_grailsDEV`.`snbr_act_vector` ( `id` bigint(20) NOT NULL, `nid` int(11) NOT NULL, `term` varchar(255) COLLATE utf8_unicode_ci NOT NULL, `weight` double NOT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci

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• How to remove duplicate records in a table?

  - by Mason Wheeler

  I've got a table in a testing DB that someone apparently got a little too trigger-happy on when running INSERT scripts to set it up. The schema looks like this: ID UNIQUEIDENTIFIER TYPE_INT SMALLINT SYSTEM_VALUE SMALLINT NAME VARCHAR MAPPED_VALUE VARCHAR It's supposed to have a few dozen rows. It has about 200,000, most of which are duplicates in which TYPE_INT, SYSTEM_VALUE, NAME and MAPPED_VALUE are all identical and ID is not. Now, I could probably make a script to clean this up that creates a temporary table in memory, uses INSERT .. SELECT DISTINCT to grab all the unique values, TRUNCATE the original table and then copy everything back. But is there a simpler way to do it, like a DELETE query with something special in the WHERE clause?

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• Merge Primary Keys - Cascade Update

  - by Chris Jackson

  Is there a way to merge two primary keys into one and then cascade update all affected relationships? Here's the scenario: Customers (idCustomer int PK, Company varchar(50), etc) CustomerContacts (idCustomerContact int PK, idCustomer int FK, Name varchar(50), etc) CustomerNotes (idCustomerNote int PK, idCustomer int FK, Note Text, etc) Sometimes customers need to be merged into one. For example, you have a customer with the id of 1 and another with the id of 2. You want to merge both, so that everything that was 2 is now 1. I know I could write a script that updates all affected tables one by one, but I'd like to make it more future proof by using the cascade rules, so I don't have to update the script every time there is a new relationship added. Any ideas?

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• How to dynamically write the query in SQL Server 2008?

  - by user1237131

  How to write the dynamically the below query? Table empid designation interestes 1 developer,tester cricket,chess 1 developer chess 1 techlead cricket Condition: IF empid = 1 AND (designation LIKE '%developer%' OR designationLIKE '%techlead%') OR (interests LIKE '%cricket%'). How to write the above query dynamically if designations need to send more than 2,and also same on interstes . please tell me ... EDIT stored procedure code: ALTER PROCEDURE [dbo].[usp_GetDevices] @id INT, @designation NVARCHAR (MAX) AS BEGIN declare @idsplat varchar(MAX) set @idsplat = @UserIds create table #u1 (id1 varchar(MAX)) set @idsplat = 'insert #u1 select ' + replace(@idsplat, ',', ' union select ') exec(@idsplat) Select id FROM dbo.DevicesList WHERE id=@id AND designation IN (select id1 from #u1) END

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• mysql select query optimization

  - by Saharsh Shah

  I have two table testa & testb. CREATE TABLE `testa` ( `id` INT(10) NOT NULL AUTO_INCREMENT, `name` VARCHAR(50) DEFAULT NULL, PRIMARY KEY (`id`) ); CREATE TABLE `testb` ( `id` INT(10) NOT NULL AUTO_INCREMENT, `name` VARCHAR(50) DEFAULT NULL, `aid1` INT(10) DEFAULT NULL, `aid2` INT(10) DEFAULT NULL, `aid3` INT(10) DEFAULT NULL, PRIMARY KEY (`id`) ); Currently I am running below query for retrieving all rows where id in testa table matches with any columns of aid1,aid2,aid3 in tableb. The query is retreiving acurate result but it is taking minimum 30 seconds to execute which is too much. I have also tried to optimise my query using UNION but failed to do so. SELECT a.id, a.name, b.name, b.id FROM testb b INNER JOIN testa a ON b.aid1 = a.id OR b.aid2 = a.id OR b.aid3 = a.id ; How do i optimize my query so it's total execution time is within 2-3 seconds? Thanks in advance...

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• Convert Date with characters to mm/dd/yyyy

  - by peter

  I have a columns called Submit_Date in table Tickets and the datatype of it is Varchar(200) and I am trying to convert it to MM/DD/YYYY format and when i do that i get the following error: Msg 242, Level 16, State 3, Line 1 The conversion of a varchar data type to a datetime data type resulted in an out-of-range value. Sample Data of the table is: Submit_Date 27-09-2013 16:15:00 CST 30-09-2013 16:30:24 CST 27-09-2013 10:03:46 CST 30-09-2013 14:35:55 CST 25-09-2013 16:28:48 CST 24-09-2013 09:29:45 CST I tried doing the following: Select Convert(datetime,Submit_date,101) from dbo.Tickets Let me know where I am doing wrong.

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• SQL Function for On Balance Volume (Financial Query)

  - by CraigJSte

  I would like to create a function for On Balance Volume (SQL Function). This is too complex of a calculation for met to figure out but here is the outline of the User Defined Table Function. If someone could help me to fill in the blanks I would appreciate it. Craig CREATE FUNCTION [dbo].[GetStdDev3] (@TKR VARCHAR(10)) RETURNS @results TABLE ( dayno SMALLINT IDENTITY(1,1) PRIMARY KEY , [date] DATETIME , [obv] FLOAT ) AS BEGIN DECLARE @rowcount SMALLINT INSERT @results ([date], [obv]) // CREATE A FUNCTION FOR ON BALANCE VOLUME // On Balance Volume is the Summ of Volume for Total Periods // OBV = 1000 at Period = 0 // OBV = OBV Previous + Previous Volume if Close Previous Close // OBV = OBV Previous - Previous Volume if Close < Previous Close // OBV = OBV Previous if Close = Previous Close // The actual Value of OBV is not important so to keep the ratio low we reduce the // Total Value of Tickers by 1/10th or 1/100th // For Value of Volume = Volume * .01 if Volume < 999 // For Value of Volume = Volume * .001 If Volume = 999 FROM Tickers RETURN END This is the Tickers table [dbo].[Tickers]( [ticker] [varchar](10) NULL, [date] [datetime] NULL, [high] [float] NULL, [low] [float] NULL, [open] [float] NULL, [close] [float] NULL, [volume] [float] NULL, [time] [datetime] NULL, [change] [float] NULL )

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