Search Results

Search found 20224 results on 809 pages for 'query optimization'.

Page 286/809 | < Previous Page | 282 283 284 285 286 287 288 289 290 291 292 293  | Next Page >

• How can I "merge" or "flatten" results from a query which returns multiple rows into a single result

  - by dsm

  I have a simple query over a table, which returns results like the following: id id_type id_ref 2702 5 31 2702 16 14 2702 17 3 2702 40 1 2702 26 4 And I would like to merge the results into a single row, for instance: id concatenation 2702 5,16,17,40,26:31,14,3,1,4 Is there any way to do this within a trigger? NB: I know I can use a cursor, but I would really prefer not to unless there is no better way.

  Read the article

• How do I change this query to linq to sql?

  - by Piyush

  Query: select emp.empname as Name, dep.depname as Department from Employee as emp inner join Department as dep on emp.depid=dep.depid where emp.id='2' How can I change this to linq to sql?

  Read the article

• Linq, how to delete items in the middle of a query return?

  - by 5YrsLaterDBA

  I got a list of objects in the following query. How to delete items in the middle, saying I want to delete item in 2, 5, and 7 position? thanks var archivedPwds = from archivedPwd in db.PasswordArchive where archivedPwd.UserId == userId orderby archivedPwd.DateChanged select archivedPwd;

  Read the article

• SQL Server 2008 > how to get service startup parameter values by query?

  - by Sean Ochoa

  Is it possible to query for the SQL Server 2008 service startup parameter values using T-SQL? I'm specifically looking for the -g parameter that indicates how much memory that SQL Server will leave available for memory allocations within the SQL Server process, but outside the SQL Server memory pool [msdn reference].

  Read the article

• In SQL, can we always write an inner join statement as a main query and subquery?

  - by Jian Lin

  In SQL, can we always write an inner join statement as a main query and subquery? For example, select * from gifts g where g.giftID in (select giftID from sentGifts); can do a join and show the gifts sent in the sentGifts table, but it won't be able to show the sentTime because that is inside the subquery?

  Read the article

• How do you do a 'like' query in appengine JPA?

  - by Mark M

  I know there is a limited version of a LIKE query in the App engine's datastore where you can only search on the end of a string but I can't seem to find the syntax. I want to do something like this SELECT * FROM MyTable WHERE name LIKE ji%

  Read the article

• SQL SERVER Query result in CSV format is possible?

  - by gopal

  Hi, Is it possible to get the query result in .CSV file format from SQL SERVER 2000 and above versions? If so can we use this feature from an asp.net application to get the result in CSV format? If so how can we do this?

  Read the article

• Mysql query to get distict hotel id with minimum price and star?

  - by user1325929

  Current table hotel_id | price | star 1100 | 1999 | 3 1100 | 1565 | 3 1100 | 2000 | 3 1101 | 2010 | 4 1101 | 2050 | 4 1102 | 5599 | 5 1102 | 6599 | 5 Required result: distinct hotels with minimum price and it's star hotel_id | price | star 1100 | 1565 | 3 1101 | 2010 | 4 1102 | 5599 | 5 I wrote query as SELECT DISTINCT hotel_id, min(price),star FROM MyTable. It is giving only 1 row instead of 3

  Read the article

• Can i use a parameter multiple times in the qame query?

  - by djerry

  Hey guys, i was wondering, can a parameter be used more then once in the same query, like this : MySqlParameter oPar0 = new MySqlParameter("e164", MySqlDbType.String); oPar0.Value = user.E164; string sSQL0 = "Delete from callmone.call where (caller=?e164 or called=?e164);"; clsDatabase.ExecuteSQL(sSQL0, oPar0); Is this possible or should i write 2 parameters?

  Read the article

• How to execute query with IN clause in spring?

  - by GK

  I have following code : try { MapSqlParameterSource parameters = new MapSqlParameterSource(); parameters.addValue("ids", year); return this.template.getJdbcOperations().query( "SELECT * FROM INCOME WHERE PROVNUM=? AND FISCALDATE IN ( :ids )", this.rowMapper, parameters); }catch (EmptyResultDataAccessException ex) { return null; } But i am not able to send the value for PROVNUM. how to do that? need help, thanks.

  Read the article

• What SQL query should I perform to get the result set expected?

  - by texai

  What SQL query should I perform to get the result set expected, giving the first element of the chain (2) as input data, or any of them ? table name: changes +----+---------------+---------------+ | id | new_record_id | old_record_id | +----+---------------+---------------+ | 1| 4| 2| | -- non relevant data -- | | 6| 7| 4| | -- non relevant data -- | | 11| 13| 7| | 12| 14| 13| | -- non relevant data -- | | 31| 20| 14| +----+---------------+---------------+ Result set expected: +--+ | 2| | 4| | 7| |13| |14| |20| +--+ I know I should consider change my data model, but: What if I couldn't? Thank you in advance!

  Read the article

• How do I modify the hundards of records based on my query result?

  - by Nano HE

  Hi, I inserted some error record to my table, I can query via the sql below and found hundards of record marked with half. SELECT * FROM `marathon` WHERE gender = 'male' && distance = 'half'; How to write a SQL then I can modify the result rows distance from 'half' to 'full'. Thank you.

  Read the article

• Possible to assign a data type to an anonymous type's members in a linq query?

  - by Abe Miessler

  If I have a linq query that creates the anonymous type below: select new { lf.id, lf.name, lf.desc, plf.childId }; Is it possible to assign a specific type to one of the members? Specifically I would like to make lf.id a null-able int rather than an int...

  Read the article

• How to skip an empty LIKE operator in a multiple LIKE query?

  - by alex

  I notice my query doesn't behave correctly if one of the like variables is empty: SELECT name FROM employee WHERE name LIKE '%a%' AND color LIKE '%A%' AND city LIKE '%b%' AND country LIKE '%B%' AND sport LIKE '%c%' AND hobby LIKE '%C%' Now when a and A are not empty it works but when a, A and c are not empty the c part is not excuted so it seems? How can I fix this?

  Read the article

• MYSQL Insert: How to save Query in the database only one time - duplicate key doesn't work!

  - by elmaso

  hello, I want to save a query only one time in the database, this is my code: $querystat = mysql_real_escape_string($_GET['q']); $datetime = time(); if( ($querystat != $_SESSION['prev_search']) OR ( ($datetime - $_SESSION['datetime']) > 60) ) { $insertquery = "INSERT INTO `query` ( `searchquery` , `datetime`) VALUES ( '$querystat' , '$datetime') ON DUPLICATE KEY UPDATE searchquery='$querystat';"; mysql_query($insertquery, $db); } maybe something with == 0 ?

  Read the article

• How do I compare a DateTime column to now() in a query filter in SqlAlchemy?

  - by Ben

  I have a table with an 'expires' datetime column. I want to find all the items that have an 'expires' date earlier than now. I've tried session.query(Item).filter(Item.expires < now()) but it doesn't return anything regardless of the dates in the table. I'm using PostgreSQL 8.4. How do I do this comparison?

  Read the article

• Can I get the full query that a PreparedStatement is about to execute?

  - by ufk

  I'm working with PreparedStatement with MySQL server. example: String myQuery = "select id from user where name = ?"; PreparedStatement stmt = sqlConnection.prepareStatement(myQuery); stmt.setString(1, "test"); stmt.executeQUery(); ResultSet rs = stmt.getResultSet(); How can I receive the full SQL query that is about to be executed on the MySQL server? thanks!

  Read the article

• what does positional and named parameter in a query mean?

  - by ajsie

  here we got a positional parameter: SELECT u FROM ForumUser u WHERE u.id = ?1 and here a named parameter: SELECT u FROM ForumUser u WHERE u.username = :name this is DQL (doctrine query language) but i think the concept is the same. could someone please explain what these mean and do?

  Read the article

• How to check results of LINQ to SQL query?

  - by rem

  In a WPF app I'd like to check if a return of a LINQ to SQL query contains some records, but my approach doesn't work: TdbDataContext context = new TdbDataContext(); var sh = from p in context.Items where p.Selected == true select p; if (sh == null) { MessageBox.Show("There are no Selected Items"); } Where am I wrong?

  Read the article

• How to query by recent date and value in SQL?

  - by wsb3383

  I have a table with three columns: patient_id, obs_date, and weight_val. patient_id stores patient identification #, weight_val stores a weight value, and obs_date stores the date when the weight reading was taken. So, a patient can have many different weight readings at different dates. How do you write a query for: select all patients whose last weight reading is 120?

  Read the article

• how to improve performance of update query in sql?

  - by angel ansari

  I want to improve the performance of this update query because when it take lots of time to execute: Qry = "update tab1 set cDate=GetDate() where right('000000000000'+in_num,12)='" & InvNo.PadLeft(12, "0") & "' and (Total-Amount)<>Balance <>Balance and cDate is null"

  Read the article

• Can "Distinct" key Word be used twice in a single Select Query?

  - by OM The Eternity

  Can "Distinct" key Word be used twice in a single Select Query? like wise: select DISTINCT(trackid), DISTINCT(table_name) from jos_audittrail where live = 0 AND operation = UPDATE Thanks

  Read the article

• Whats query can be used to get the details of Indexes of any table?

  - by Parth

  Whats query can be used to get the details of Indexes of any table? I need this to find out primarykey/autoincremented value of any table.. Please help/Guide me...

  Read the article

• Is existed web markup languages with possibility insert sql query?

  - by MercurieVV

  Actually what I want - simple DB with simple User Interface. Like MS Access, but for web and it can be without Dragn n Drop, but described with markup language. For example if I want to create list report, then i need to write something like: <table query="SELECT * from mytable"></table> It needed for simple data applications. In that kind application no programming logic required. Just working with DB. Changing DB data and showing it.

  Read the article

• how to run a query from the VBA Editor window in ACCESS?

  - by every_answer_gets_a_point

  i would like to do something like this: DoCmd.OpenQuery "select * from some_table;" how would i do this? please keep in mind i don't want create a new query, save it, and run it, i just want to type the select statement in the vba code and run it.

  Read the article

< Previous Page | 282 283 284 285 286 287 288 289 290 291 292 293  | Next Page >