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• Sorting SQL query results in Java

  - by Manu

  Firstly my apologies for putting some large text here. Below is the result by executing SQL query in Java but I want it to short it out using timestamp. For eg. TimeStamp in the below 1st line text is - 040501(HH:mm:ss) (like wise all data contains timestamp) (Sorting should be done by using timestamp parameters) (Each line given below is single row from database) 12010051104050131331GZM4 7000000 1 FCFR 120100511040501912828MP2 11590000 0 NOTY 120100511040501312938VF7 366140 .96808795 FGPC 120100511040501912828KA7 6580000 0 NOTY 120100511040501912828JH4 490000 0 NOTY 120100511160528912810PV4 83227500 1.03581 TRIB 120100511160538912795W31 0 1 BILL 120100511160540912828MP2 455784400 0 NOTY 120100511160545912795W31 0 1 BILL 220100511 040501 2101000 220100511 040501 51037707 220100511 040502 700149 220100511 040502 4289000 220100511 060514 71616600 220100511 060514 722453500 the result i would expect is... 12010051104050131331GZM4 7000000 1 FCFR 120100511040501912828MP2 11590000 0 NOTY 120100511040501312938VF7 366140 .96808795 FGPC 120100511040501912828MP2 11590000 0 NOTY 120100511040501912828JH4 490000 0 NOTY 20100511040501 2101000 20100511040501 51037707 20100511040502 4289000 20100511040502 700149 20100511060514 722453500 20100511060514 71616600 20100511160528912810PV4 83227500 1.03581 TRIB 20100511160538912795W31 0 1 BILL 20100511160540912828MP2 455784400 0 NOTY 20100511160545912795W31 0 1 BILL Please help me out guys. i am fighting for this very long time. Thanks for your help in advance.

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• Add Unique Key For Nullable Columns - SQL Server

  - by Ruby

  I'm using sql server 2008 R2 and would like to apply unique key constraint to nullable columns. This code works good, but if I have multiple columns to add this rule to, it would generate as many 'nullbuster' columns. ALTER TABLE tblBranch ADD nullbuster AS (CASE WHEN column1 IS NULL THEN BranchID ELSE NULL END); CREATE UNIQUE INDEX UK_Column1 ON tblBranch(column1,nullbuster); tblBranch is the table name, nullbuster would be the new column name, BranchId is the Primary key column of the target table, and Column1 is the column name of the target column. Is there any way that I could achieve the goal without generating new columns.

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• PHP - Using strcpsn() to protect against SQL injection?

  - by MichaelMitchell

  I am making a sort of form validation system and I need to check the SQL database to see if the username is already there. So, my question, is it effective to use a little if statement like this to protect against an attack? if (strcspn($string, "/\?!@#$%^&*()[]{}|:;<>,.\"\'-+=" == strlen($string)){ return true; } So essentially, if the string contains any of these characters, "/\?!@#$%^&*()[]{}|:;<>,.\"\'-+=", then the length will not equal that of the original $string. I am just wondering if this is sufficient to protect, or if there is more that I must do. Thanks.

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• SQL Time(2) to Array in C#?

  - by Jacob Huggart

  Hello all, I am using ASP MVC and SQL Server and I have a database that is updated intermittently with expected wait times for some event. Also, I am using some ajax and jquery. I need to display the average and maximum wait times. How can I take the entire list of time from the server and get the average time? Also, what would be the best method to simply grab a new time from the server when it is updated without having to pull the whole list again? Thanks!

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• Linq-to-SQL- A stored procedure returns field which is not there in Mapped Table Info

  - by jalpesh

  We are using Linq-to-SQL with stored Procedures we need help on one of our problem. We are having user tables which is having all field required for user table like firstname,lastname and other fields that table is also there in our DBML files.Now the problem is that we are having a stored procedure that is mapped to table-User returning a field called fullname (Combination of firstname and lastname)which is not there in usertable. So what is the best way to slove this. Another thing is that one of other stored procedure return inner join of two tables with mix columns in this case how can i mapped that stored procedure with Table mapped info class in our dbml files.

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• Linq to SQL inheritance and Table per Class - approach needed for multiple roles

  - by Ash Machine

  I am using L2S and an inheritance model for mapping Persons against certain roles. Guy Burstein's excellent blog post explains how to accomplish this: http://blogs.microsoft.co.il/blogs/bursteg/archive/2007/10/01/linq-to-sql-inheritance.aspx However, I have a specific case where a Person has multiple roles. For example 'Jane Doe' is a Contact and a Programmer. In this model, she would need two rows in the People table, one as Contact (PersonType = 1) and one as Programmer (PersonType = 3). If she changes her last name, and that update happens in her role as Contact, I would need to change all instances of 'Jane Doe' to reflect the name change everywhere. What sort of best approach (improved data structure) could be used to change last name within all roles? Finally, I am hoping to avoid overriding each general form update events to include all instances, but that may be the only way. Any suggestions or approaches appreciated.

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• Loading large amounts of data to an Oracle SQL Database

  - by James

  Hey all, I was wondering if anyone had any experience with what I am about to embark on. I have several csv files which are all around a GB or so in size and I need to load them into a an oracle database. While most of my work after loading will be read-only I will need to load updates from time to time. Basically I just need a good tool for loading several rows of data at a time up to my db. Here is what I have found so far: I could use SQL Loader t do a lot of the work I could use Bulk-Insert commands Some sort of batch insert. Using prepared statement somehow might be a good idea. I guess I was wondering what everyone thinks is the fastest way to get this insert done. Any tips?

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• Why can't I pass in a uniqueidentifier/GUID to a stored procedure

  - by chobo2

  Hi I have this SP USE [TestDB] GO /****** Object: StoredProcedure [dbo].[sp_test] Script Date: 06/12/2010 11:47:27 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO CREATE PROCEDURE [dbo].[sp_test] @id uniqueidentifier AS BEGIN select * from TestTbl where ProductId= @id END I then went to the SP with ms sql 2005 and clicked execute. It comes up with a box where I entered in the GUID. I copied and pasted it straight from my test database. I get this error. Msg 102, Level 15, State 1, Line 5 Incorrect syntax near 'cac671b'. So why can't I sent in GUIDs? even ones that are copied right from the database and must be valid as they where allowed into the db.

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• SQL query to get field value distribution (mode)

  - by Bryan Lewis

  I have a table of over 1 million test score records that basically have a unique score_ID, a subject_ID and a score given by a person. The score range for most subjects is 0-3, but some have a range of 0-4. There are about 25 possible subjects. I need to produce a score distribution report which looks like: subject_ID 0 1 2 3 4 ---------- --- --- --- --- --- 1 967 576 856 234 2 576 947 847 987 324 . . So it groups the data by subject_ID, then shows how many times a specific score value was given within that subject. Any SQL pointers to generate this would be greatly appreciated.

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• Database Engine not appearing in SQL Server listing

  - by Jonn

  I don't know if I'm searching for the wrong queries in google but I can't seem to find an answer to this. I have SQL Server 2008 installed in my pc and according to services.msc, I've got 2 database engines running: SQLEXPRESS (probably one that came along with Visual Studio) and MSSQLSERVER. When I try to connect only SQLEXPRESS is visible in the Server Name drop down list. I tried to explicitly state MSSQLSERVER by typing in MYPCNAME\MSSQLSERVER Didn't work. The best solution I could find in the internet was to enable stuff at Configuration Manager. Didn't work either (although I did find that TCP/VIA and all other options were disabled for MSSQLSERVER). Anyone have any other ideas on what I should try next or probably something that I overlooked?

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• SQL CREATE TABLE Error

  - by Adam M-W

  Hi, I've been stuck on this one simple(ish) thing for the last 1/2 hour so I thought I might try to get a quick answer here. What exactly is incorrect about my SQL syntax, assuming I'm using mysql 5.1 CREATE TABLE 'users' ( 'id' MEDIUMINT(8) UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY, 'username' VARCHAR(20) NOT NULL, 'password' VARCHAR(40) NOT NULL, 'salt' VARCHAR(40) DEFAULT NULL, 'email' VARCHAR(80) NOT NULL, 'created_on' INT(11) UNSIGNED NOT NULL, 'last_login' INT(11) UNSIGNED DEFAULT NULL, 'active' TINYINT(1) UNSIGNED DEFAULT NULL, ) ENGINE InnoDB; Also, does anyone have any good tutorials about how to use Zend_Auth for complete noobs? Thanks.

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• How do stream rows from a MSSQL table into a .NET app, in 10000 row chunks?

  - by Gravitas

  I have a table with 300 million rows in Microsoft SQL Server 2008 R2. There is a clustered index on the date column [DataDate] which means that the entire table is ordered by the date column. How do I stream out the data from this table, into my .NET application, in 10000 row chunks? Environment: Using C#. Have to be able to pause the data stream at any point, to allow the client to process the rows. Unfortunately, cannot use a select * from as this will select the entire table (its 50GB - it won't fit into memory).

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• SQL Server - Searching string with international characters using LIKE clause

  - by Nikhil

  Hi, I have a field 'Description' which can have product descriptions with any unicode characters. If I search for a description which contains an international character, with a LIKE condition (word searched with does not have the international character) I get the following results: Ex: GEWÜRZTRAMINER is one of the descriptions. When I do: Select * from table where Description LIKE '%GEWURZTRAMINER%', it retrieves the entry. When I do: Select * from table where Description LIKE '%GEWURZ%', the entry is not retrieved. (Note: the search condition does not include the Ü but has a U) Is there a way around this so that I can retrieve with '%GEWURZ%' as well? SQl Server 2008

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• How do I generate optimized SQL with my (added) partial methods on LINQ entities

  - by Ra

  Let's say I have a Person table with a FirstName and LastName column. I extended the Person LINQ entity class with a get property "FullName", that concatenates the first and last names. A LINQ query like: from person... select fullName where id = x generates SQL selecting all Patient columns, since FullName is evaluated after firing the query. I would like to limit the select clause to only the 2 columns required. This is a simple example, but the limitation it shows is that I cannot isolate my business/formatting rules but have to embed them in the LINQ query, so they're not reusable (since it is in the select part) or I need select both columns separately, and then concatenate them higher up in the data or business layer with static helper methods. Any ideas for a clean design using the entity partial classes or extensions? Thanks

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• sql server db deployment script ignoring constraints etc until commit

  - by Daniel

  Hi all, I am planning on doing a database deployment script for sql server 2005. Currently we have a tool that will run all of the tables, foreign keys, indexes and then data, each of which is located in a separate file with a certain extension (eg. tab, .kci, .fky) and the tool just runs *.tab, *.kci, *.fky into the db etc. Could I possibly combine all of thse into one file and have them run ignoring referential integrity until they are all complete, I would turn it on before we started inserting test data. It is just unmanageable having to maintain 4 or 5 different types of scripts for one table. Are there any issues I should be aware of? Cheers

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• IF/ELSE makes stored procedure not return a result set

  - by Brendan Long

  I have a stored procedure that needs to return something from one of two databases: IF @x = 1 SELECT @y FROM Table_A ELSE IF @x = 2 SELECT @y FROM Table_B Either SELECT alone will return what I want, but adding the IF/ELSE makes it stop returning anything. I tried: IF @x = 1 RETURN SELECT @y FROM Table_A ELSE IF @x = 2 RETURN SELECT @y FROM Table_B But that causes a syntax error. The two options I see are both horrible: Do a UNION and make sure that only one side has any results: SELECT @y FROM Table_A WHERE @x = 1 UNION SELECT @y FROM Table_B WHERE @x = 2 Create a temporary table to store one row in, and create and delete it every time I run this procedure (lots). Neither solution is elegant, and I assume they would both be horrible for performance (unless MS SQL is smart enough not to search the tables when the WHERE class is always false). Is there anything else I can do? Is option 1 not as bad as I think?

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• reStructuredText for SQL?

  - by Chris

  I am trying to use DocUtils and reStructuredText to comment SQL code. I can get this to work when I include the markup inside multi-line comments. I then use --Some text:: to introduce each block of code. I cannot get internal hyperlinks to work. I would like to write -- .. Step1_: but the parser ignores this because of the leading comment. Using a multi-line style also fails. Is there a way to get this to work? Here's an example: /* ========== this query ========== :Author: Me Outline ========== - Create table 1 - Create table 2 - Output the result */ -- _Step1: build the table:: create table table1 -- _Step2: use Step1_ to build table 2:: create table table2

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• is putting N in front of strings in scripts considered a "best practice"?

  - by jcollum

  Let's say I have a table that has a varchar field. If I do an insert like this: INSERT MyTable SELECT N'the string goes here' Is there any fundamental difference between that and: INSERT MyTable SELECT 'the string goes here' My understanding was that you'd only have a problem if the string contained a Unicode character and the target column wasn't unicode. Other than that, SQL deals with it just fine and converts the string with the N'' into a varchar field (basically ignores the N). I was under the impression that N in front of strings was a good practice, but I'm unable to find any discussion of it that I'd consider definitive. Title may need improvement, feel free.

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• Linq to SQL and Realtime Data

  - by Jeremy

  I have an application that needs to constantly (every 50ms), call to an MVC action, and pickup/drop off data. I am using Linq to SQL and MVC because of how simple they are to implement, and I know that they aren't perfect when it comes to performance, but it works relatively well, but the best speed I can get with my current approach is 200ms (without requests overlapping). Each call to the site will create a new instance of the datacontext, query/insert it and return that data. Is there a way to have the datacontext static, but submitchanges say every 5 seconds, so that i am pretty much hitting an in-memory version of the data?

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• HELP with sql query involving two tables and a max date

  - by wes

  hello all....firstly any help is greatly appreciated! i have been searching for a solution to my problem for a while and haven't found exactly what i am looking for. i have two tables notifications and mailmessages. notifications has fields( notifytime, notifynumber, and accountnumber). mailmessages has fields(id, messagesubject, messagenumber, accountnumber) my goal is to create a single sql query to retrieve distinct rows from mailmessages WHERE the accountnumber is a specific number AND the notifynumber=messagenumber AND ONLY the most recent notifytime from the notifications table where the accountnumbers match in both tables. i am using sqlexpress2008 as a backend to an asp.net page....this query should return distinct messages for an account with only the most recent date from the notifications table..please help! i'll buy you a beer!!!

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• Can't INSERT INTO SELECT into a table with identity column

  - by Eran Goldin

  In SQL server, I'm using a table variable and when done manipulating it I want to insert its values into a real table that has an identity column which is also the PK. The table variable I'm making has two columns; the physical table has four, the first of which is the identity column, an integer IK. The data types for the columns I want to insert are the same as the target columns' data types. INSERT INTO [dbo].[Message] ([Name], [Type]) SELECT DISTINCT [Code],[MessageType] FROM @TempTableVariable END This fails with Cannot insert duplicate key row in object 'dbo.Message' with unique index 'IX_Message_Id'. The duplicate key value is (ApplicationSelection). But when trying to insert just Values (...) it works ok. How do I get it right?

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• Truncating a table referenced by a foreign key

  - by born to hula

  Hey, We have two tables in a SQL Server 2005 database, A and B.There is a service which truncates table A every day. Recently, a foreign key constraint was added to table B, referencing table A. As a result, it isn't possible truncating table A anymore, even if table B is empty. Is there any workaround to get the same result as truncating table A? I've already tried the approach below but the identity wasn't reset. DBCC CHECKIDENT (TABLENAME, RESEED, 0) PS. before anyone points this as a duplicate, the different thing here is that I'm not allowed to drop constraints, nor creating any.

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• SQL query problem

  - by Brisonela

  Hi, I'm new to StackOverflow, and new to SQL Server, I'd like you to help me with some troublesome query. This is my database structure(It's half spanish, hope doesn't matter) Database My problem is that I don't now how to make a query that states which team is local and which is visitor(using table TMatch, knowing that the stadium belongs to only one team) This is as far as I can get Select P.NroMatch, (select * from fnTeam (P.TeamA)) as TeamA,(select * from fnTeam (P.TeamB)) as TeamB, (select * from fnEstadium (P.CodEstadium)) as Estadium, (cast(P.GolesTeamA as varchar)) + '-' + (cast(P.GolesTeamA as varchar)) as Score, P.Fecha from TMatch P Using this functions: If object_id ('fnTeam','fn')is not null drop function fnTeam go create function fnTeam(@CodTeam varchar(5)) returns table return(Select Name from TTeam where CodTeam = @CodTeam) go select * from fnTeam ('Eq001') go ----**** If object_id ('fnEstadium','fn')is not null drop function fnEstadium go create function fnEstadium(@CodEstadium varchar(5)) returns table return(Select Name from TEstadium where CodEstadium = @CodEstadium) go I hope I'd explained myself well, and I thank you help in advance

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• Basic SQL query question

  - by user318573

  Hello, I have the following query: SELECT Base.ReportDate, Base.PropertyCode, Base.FirstName, Base.MiddleName, Base.LastName, Person.FirstName, Person.MiddleName, Person.LastName FROM LeaseT INNER JOIN Base ON LeaseT.LeaseID = Base.LeaseID INNER JOIN Person ON LeaseT.TenantID = Person.ID works fine, except there could be 0 to 'N' people in the 'Person' table for each record in the Base table, but I only want to return exactly 1 for each 'Base' record (doesn't matter which, but the one with the lowest Person.ID) would be a reasonable choice. If there is 0 rows in the person table, I still need to return the row, but with null values for the 'person' fields. How would I structure the SQL to do that? Thanks. Edit: Yes, the tables are probably not structured properly, but restructuring at this time is not possible - got to work with what is there.

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• Copy a Table's data from a Stored Procedure

  - by Niike2

  I am learning how to use SQL and Stored Procedures. I know the syntax is incorrect: Copy data from one table into another table on another Database with a Stored Procedure. The problem is I don't know what table or what database to copy to. I want it to use parameters and not specify the columns specifically. I have 2 Databases (Master_db and Master_copy) and the same table structure on each DB. I want to quickly select a table in Master_db and copy that table's data into Master_copy table with same name. I have come up with something like this: USE Master_DB CREATE PROCEDURE TransferData DEFINE @tableFrom, @tableTo, @databaseTo; INSERT INTO @databaseTo.dbo.@databaseTo SELECT * FROM Master_DB.dbo.@tableFrom GO;

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