Search Results

Search found 22756 results on 911 pages for 'power query'.

Page 750/911 | < Previous Page | 746 747 748 749 750 751 752 753 754 755 756 757  | Next Page >

• Load Balancing and Failover for Read-Only PostgreSQL Database

  - by Eric J.

  Scenario Multiple application servers host web services written in Java, running in SpringSource dm Server. To implement a new requirement, they will need to query a read-only PostgreSQL database. Issue To support redundancy, at least two PostgreSQL instances will be running. Access to PostgreSQL must be load balanced and must auto-fail over to currently running instances if an instance should go down. Auto-discovery of newly running instances is desirable but not required. Research I have reviewed the official PostgreSQL documentation on this issue. However, that focuses on the more general case of read/write access to the database. Top google results tend to lead to older newsgroup messages or dead projects such as Sequoia or DB Balancer, as well as one active project PG Pool II Question What are your real-world experiences with PG Pool II? What other simple and reliable alternatives are available?

  Read the article

• PHP, what is the better choice for removing a known string?

  - by Brook Julias

  I am looking to search for and replace a known string from within another string. Should I use str_replace() or ereg_replace()? The string to be replaced would be something similar to [+qStr+], [+bqID+], or [+aID+] and it would be being searched for in a code chunk similar to this: <li> [+qStr+] <ol class="mcAlpha"> <li><input type="radio" name="[+bqID+]" id="[+bqID+]_[+aID+]" value="[+aID+]" /><label for="[+bqID+]_[+aID+]">[+aStr+]</label></li> </ol> </li> I would be replacing the strings with the results from a MySQL query, and be performing this action or similar up to 200 times at a time. Which function str_replace() or ereg_replace() would be the easiest and/or quickest method to take.

  Read the article

• When should I open and close a connection to SQL Server

  - by Martin

  I have a simple static class with a few methods in it. Each of those methods open a SqlConnection, query the database and close the connection. This way, I am sure that I always close the connection to the database, but on the other hand, I don't like to always open and close connection. Below is an example of what my methods look like. public static void AddSomething(string something) { using (SqlConnection connection = new SqlConnection("...")) { connection.Open(); // ... connection.Close(); } } Considering that the methods are inside a static class, should I have a static member containing a single SqlConnection? How and when should I drop it? What are the best practices?

  Read the article

• MySQL GROUP_CONCAT + IN() = missing data :-(

  - by Andrew Heath

  Example: Table: box boxID color 01 red 02 blue 03 green Table: boxHas boxID has 01 apple 01 pear 01 grapes 01 banana 02 lime 02 apple 02 pear 03 chihuahua 03 nachos 03 baby crocodile I want to query on the contents of each box, and return a table with each ID, color, and a column that concatenates the contents of each box, so I use: SELECT box.boxID, box.color, GROUP_CONCAT(DISTINCT boxHas.has SEPARATOR ", ") AS contents FROM box LEFT JOIN boxHas ON box.boxID=boxHas.boxID WHERE boxHas.has IN ('apple','pear') GROUP BY box.boxID ORDER BY box.boxID and I get the following table of results: boxID color contents 01 red apple, pear 02 blue apple, pear My question to you is: why isn't it listing ALL the has values in the contents column? Why is my WHERE statement also cropping my GROUP_CONCAT? The table I thought I was going to get is: boxID color contents 01 red apple, banana, grapes, pear 02 blue apple, lime, pear Although I want to limit my boxID results based upon the WHERE statement, I do not want to limit the contents field for valid boxes. :-/ Help?

  Read the article

• Check for Existence of a Result in Linq-to-xml

  - by NateD

  I'm using Linq-to-XML to do a simple "is this user registered" check (no security here, just making a list of registered users for a desktop app). How do I handle the result from a query like this: var people = from person in currentDoc.Descendants("Users") where (string)person.Element("User") == searchBox.Text select person; I understand the most common way to use the result would be something like foreach (var line in people){ //do something here } but what do you do if person comes back empty, which is what would happen if the person isn't registered? I've looked around on this site and on MSDN and haven't found a really clear answer yet. Extra credit: Give a good explanation of what people contains.

  Read the article

• End User Ad-Hoc Reporting Tool: Microsoft SQL Server Management Studio or Microsoft Access?

  - by schultkl

  Our centralized IT department has suggested two primary ad hoc query tools for our general user base of approximately 200 staff members: Microsoft SQL Server Management Studio 2008 (SSMS) Microsoft Access 2003 Environment The backend database is a read-only Microsoft SQL Server 2005 database. The schema is 400+ tables; allowing access to the raw data for our general staff would be a disaster. We will be building an "abstraction layer" over the raw data for our general staff to run ad hoc queries against. The abstraction layer will most likely contain a number of views. A number of users have basic knowledge in Microsoft Access; none have used SSMS. Which of the above tools (or alternative) would be best for a decidedly non-techie user base of approximately 200 people? What are the pros and cons of each? Also, the IT department has suggested teaching people T-SQL so they may use SSMS. Is this reasonable?

  Read the article

• jquery ajax success problem

  - by oshirowanen

  Why is it that the following script works clientside by removing the relievant html entity: $(".ui-delete").click(function() { $.ajax({ url: 'delete.aspx', type: 'POST', data: { strWidgetID:$(this).parents(".widget").attr("id") }, error: function() { alert('Error'); }, success: function() { alert('Success'); } }); $(this).parents(".widget:first").remove(); }); But the following query which is "more proper", does not work by removing the html entity? $(".ui-delete").click(function() { $.ajax({ url: 'delete.aspx', type: 'POST', data: { strWidgetID:$(this).parents(".widget").attr("id") }, error: function() { alert('Error'); }, success: function() { alert('Success'); $(this).parents(".widget:first").remove(); } }); }); The first script does both clientside and serverside correctly, the second script does serverside correctly, but on clientside, it just displays an alert "success", but does not remove the html entity "widget" Any ideas?

  Read the article

• Google Custom Search Engine not giving the expected search result.

  - by iecut

  Hi, I have been trying to create a new google custom search engine, but when I try some query,the search engine it is not giving me the expected search result.On some queries it is working fine, but on other queries, it says"no result". I tried adding the URL of the website that I wanted to search for, but there are certain pages and keywords that are not coming up in the search result when I try to search for the keyword of that page. I tired adding both the main page URL and the URL of the sub page that I want to search for, but nothing is working. There are some sub pages to the main URL that are coming in the search result.

  Read the article

• Autmatically create table on MySQL server based on date?

  - by Anthony

  Is there an equivalent to cron for MySQL? I have a PHP script that queries a table based on the month and year, like: SELECT * FROM data_2010_1 What I have been doing until now is, every time the script executes it does a query for the table, and if it exists, does the work, if it doesn't it creates the table. I was wondering if I can just set something up on the MySQL server itself that will create the table (based on a default table) at the stroke of midnight on the first of the month. Update Based on the comments I've gotten, I'm thinking this isn't the best way to achieve my goal. So here's two more questions: If I have a table with thousands of rows added monthly, is this potentially a drag on resources? If so, what is the best way to partition this table, since the above is verboten? What are the potential problems with my home-grown method I originally thought up?

  Read the article

• Paypal subscription trial extra charge?

  - by DucDigital

  I tried to implement paypal pro for my site. Which will let user enter their info and charge 1$ for the trial, and 10$ for the recursive fee. But when I check my merchant account, it show up 1$ and 10$ in separate order, but within 1 day (it charge 10$ that I don't want) PROFILEID=I%2d0xxxxxx1HCKEF &PROFILESTATUS=PendingProfile &TRANSACTIONID=0NP43842KS810000T &TIMESTAMP=2010%2d05%2d16T18%3a56%3a55Z &CORRELATIONID=89adac79d0d6 &ACK=Success &VERSION=57%2e0 &BUILD=1298200 &METHOD=CreateRecurringPaymentsProfile &VERSION=57.0 &PWD=1274sss7 &USER=sand_12sdsad7629_biz_api1.dital.com &SIGNATURE=IacdATZe5XHmKJs1n2w3uWMRDWyaOGDb &PAYMENTACTION=Sale &AMT=10 &CREDITCARDTYPE=Visa &ACCT=4804270925925835 &EXPDATE=052015 &CVV2=243 &FIRSTNAME= &LASTNAME= &STREET=223232323 &CITY=3232 &STATE=IA &ZIP=5452 &COUNTRYCODE=US &CURRENCYCODE=USD &BILLINGPERIOD=Month &BILLINGFREQUENCY=1 &PROFILESTARTDATE=2010-05-6+02%3A56%3A57 &INITAMT=10 &FAILEDINITAMTACTION=ContinueOnFailure &DESC=Recurring+%2410 &AUTOBILLAMT=AddToNextBilling &PROFILEREFERENCE=Anonymous &TRIALBILLINGPERIOD=Day &TRIALBILLINGFREQUENCY=5 &TRIALAMT=1 &TRIALTOTALBILLINGCYCLES=1 &SALUTE=Mr. &EMAIL=dsads%40dsads.com Was there any problem with this query string?

  Read the article

• Are there ways to improve NHibernate's performance regarding entity instantiation?

  - by denny_ch

  Hi folks, while profiling NHibernate with NHProf I noticed that a lot of time is spend for entity building or at least spend outside the query duration (database roundtrip). The project I'm currently working on prefetches some static data (which goes into the 2nd level cache) at application start. There are about 3000 rows in the result set (and maybe 30 columns) that is queried in 75 ms. The overall duration observed by NHProf is about 13 SECONDS! Is this typical beheviour? I know that NHibernate shouldn't be used for bulk operations, but I didn't thought that entity instantiation would be so expensive. Are there ways to improve performance in such situations or do I have to live with it? Thx, denny_ch

  Read the article

• Sharepoint FullTextQuery doesnt work

  - by user330309

  I have three scopes: scope A with rule include http: //mywebapp/lists/myList scope B with rule include FileExtenion aspx scope C with rule include http: //mywebapp/mysitecollection2/ some managed properties mapped to columns from myList, ows_contenttype, ows_created (Property1,2,3) select title, url, description, Property1, Property2, Property3 from Scope() where scope = 'A' this returns 15 resullts select title, url, description, Property1, Property2, Property3 from Scope() where scope = 'B' this returns 50 results select title, url, description, Property1, Property2, Property3 from Scope() where scope = 'C' this returns 10 results so why this query select title, url, description, Property1, Property2, Property3 from Scope() where scope = 'A' or scope='B' or scope='C' doesnt return 75 results ?? it returns 15 or some FullTextSqlQuery sqlQuery = new FullTextSqlQuery (site); sqlQuery .ResultTypes = ResultType .RelevantResults ; sqlQuery .QueryText = sql ; sqlQuery .TrimDuplicates = true; sqlQuery.EnableStemming=true; ResultTableCollection results = sqlQuery .Execute();

  Read the article

• stored procedure to find value in 2 columns out of 3

  - by user1510533

  I am putting in the samle date and i am supposed to do something similar what i am asking. I want to run a query that would pull values in any two columns out 3 if it has a 1 or if any one column has a 1 it will return just those results. However it should search all three columns and in any of the three columns where it found value as 1 it should return that result. Can anyone please help me with this. Thanks in advance. ID Patient Patient Name prio prio2 prio3 ------------------------------------------------- 1 101563 Robert Riley 1 1 1 2 101583 Cody Ayers 1 0 1 3 101825 Jason Lawler 0 0 1 4 101984 Dustin Lumis 1 0 0 5 102365 Stacy smith 1 0 0 6 102564 Frank Milon 1 0 0 7 102692 Thomas Kroning 1 0 0 8 102856 Andrew Philips 1 0 0 9 102915 Alice Davies 0 0 1 10 103785 Jon Durley 0 0 1 11 103958 Clayton Folsom 1 1 1 12 104696 Michelle Holsley 1 1 1 13 104983 Teresa Jones 1 0 1 14 105892 Betsy Prat 1 1 0 15 106859 Casey Ayers 1 1 0

  Read the article

• How to show a video stored on server on iphone

  - by Amitkumar

  Hi, I have a query regarding showing a video (which is stored on server) on iPhone. I want show a video in an iPhone Application. This is not live streaming. So how the video can be shown? I have read the Apple's documentation for HTTP streaming of video. Do I need to call a Web Service? Is there any tutorial for this? Thanks in advance..

  Read the article

• PHP While() Stop Looping

  - by Axel

  Hi, i have a php loop which displays only one record even if there is hundreds. here is the code: <?php $result1 = mysql_query("SELECT * FROM posts") or die(mysql_error()); $numexem = mysql_num_rows($result1); $s="0"; while($s<$numexem){ $postid=mysql_result($result1,$s,"id"); echo "Post id:".$postid; $result2 = mysql_query("SELECT * FROM pics WHERE postid='$postid'") or die(mysql_error()); $rows = mysql_fetch_array($result2) or die(mysql_error()); $pnum = mysql_num_rows($result2); echo " There is ".$pnum." Attached Pictures"; $s++; } ?> I'm wondering if the loop stop because there is other SQL query inside it or what? and i don't think so. Thanks

  Read the article

• mysql left outer join

  - by tirso

  hi to all I have two tables employee and timecard, employee table has fields employee_id,firstname,middlename,lastname and timecard table has fields employee_id,time-in,time-out,tc_date_transaction. I want to select all employee records which have the same employee_id with timecard and date is equal with the current date. If there are no records equal with the current date then return also the records of employee even without time-in,timeout and tc_date_transaction. I have query like this SELECT * FROM employee LEFT OUTER JOIN timecard ON employee.employee_id = timecard.employee_id WHERE tc_date_transaction = "17/06/2010"; result should like this: employee_id,firstname, middlename, lastname,time-in,time-out,tc_date_transaction 1,john,t,cruz,08:00,05:00,17/06/2010 2,mary,j,von,null,null,null any help would greatly appreciated Thanks in advance

  Read the article

• Querying Two Tables At Once

  - by John

  Hello, I am trying to do what I believe is called a join query. First, in a MySQL table called "login," I want to look up what "loginid" is in the record where "username" equals $profile. (This will be just one record / row in the MySQL table). Then, I want to take that "loginid" and look up all rows / records in a different MySQL table called "submission," and pull data that have that "loginid." This could possibly be more than one record / row. How do I do this? The code below doesn't seem to work. Thanks in advance, John $profile = mysql_real_escape_string($_GET['profile']); $sqlStr = "SELECT l.username, l.loginid, s.loginid, s.submissionid, s.title, s.url, s.datesubmitted, s.displayurl FROM submission AS s, login AS l WHERE l.username = '$profile', s.loginid = l.loginid ORDER BY s.datesubmitted DESC";

  Read the article

• CouchDB Map/Reduce raises execption in reduce function?

  - by fuzzy lollipop

  my view generates keys in this format ["job_id:1234567890", 1271430291000] where the first key element is a unique key and the second is a timestamp in milliseconds. I run my view with this elapsed_time?startkey=["123"]&endkey=["123",{}]&group=true&group_level=1 and here is my reduce function, the intention is to reduce the output to get the earliest and latest timestamps and return the difference between them and now function(keys,values,rereduce) { var now = new Date().valueOf(); var first = Number.MIN_VALUE; var last = Number.MAX_VALUE; if (rereduce) { first = Math.max(first,values[0].first); last = Math.min(last,values[0].last); } else { first = keys[0][0][1]; last = keys[keys.length-1][0][1]; } return {first:now - first, last:now - last}; } and when processing a query it constantly raises the following execption: function raised exception (new TypeError("keys has no properties", "", 1)) I am making sure not to reference keys inside my rereduce block. Why does this function constantly raise this exception?

  Read the article

• How to instantly termainate an un-supervised script on demand?

  - by errr

  I have a GUI which resembles an interpreter. It allows the user to write a script in Jython (implementation of Python in Java) and run it whenever he wants. Apart from that, I also wish to allow the user to instantly terminate the run whenever he wants. Thing is, I don't really know how to do it. The script is being run on a different Thread, but I don't know of any secure way to stop/interrupt/terminate a thread in the middle of its run, let alone not knowing what is being run by the thread/script (it could be a simple task or maybe some sort of a heavy SQL query against a DB, and a DB is something which requires careful resource handling). How can I instantly terminate such run on demand?

  Read the article

• Creating an Extremely Large Index in Oracle

  - by Rudiger

  Can someone look at the linked reference and explain to me the precise statements to run? Oracle DBA's Guide: Creating a Large Index Here's what I came up with... CREATE TEMPORARY TABLESPACE ts_tmp TEMPFILE 'E:\temp01.dbf' SIZE 10000M REUSE AUTOEXTEND ON EXTENT MANAGEMENT LOCAL; ALTER USER me TEMPORARY TABLESPACE ts_tmp; CREATE UNIQUE INDEX big_table_idx ON big_table ( record_id ); DROP TABLESPACE ts_tmp; Edit 1 After this index was created, I ran an explain plan for a simple query and get this error: ORA-00959: tablespace 'TS_TMP' does not exist It seems like it's not temporary at all... :(

  Read the article

• Entity Framework How to specify paramter type in generated SQL (SQLServer 2005) Nvarchar vs Varchar

  - by Gratzy

  In entity framework I have an Entity 'Client' that was generated from a database. There is a property called 'Account' it is defined in the storage model as: <Property Name="Account" Type="char" Nullable="false" MaxLength="6" /> And in the Conceptual Model as: <Property Name="Account" Type="String" Nullable="false" /> When select statements are generated using a variable for Account i.e. where m.Account == myAccount... Entity Framework generates a paramaterized query with a paramater of type NVarchar(6). The problem is that the column in the table is data type of char(6). When this is executed there is a large performance hit because of the data type difference. Account is an index on the table and instead of using the index I believe an Index scan is done. Anyone know how to force EF to not use Unicode for the paramater and use Varchar(6) instead?

  Read the article

• Local Data Cache - How do I refresh the local db when I add fields to remote db?

  - by Chu

  I'm using a Local Data Cache in an ASP.NET 3.5 environment. I made a change in my main database by adding a new field. I double click on my .SYNC file in my project to startup the Local Data Cache wizard again. The wizard starts and I click OK with the hopes that it'll re-query my database and add the new field to the local database file. Instead, I get an error saying "Synchronizing the databae failed with the message: Unable to enumerate changes at the DbServerSyncProvider..." The only way I know to get things working again is to delete the .SYNC file along with the local database and start it from scratch. There's got to be an easier way... anyone know it?

  Read the article

• Using Google Weather API with Lat and Lon - how to format?

  - by Paul

  I am wanting to use the Google Weather API - by passing lat and long values. However it seems Google is needing these formatted differently to the values I have stored. i.e. For the town of McTavish I have values of 45.5 and -73.583 This works here: http://api.wunderground.com/auto/wui/geo/WXCurrentObXML/index.xml?query=45.5,-73.583 But when I use Google it does not: See: www.google.com/ig/api?weather=,,,45.5,-73.583 Any help appreciated. I would prefer to use the Google Data.

  Read the article

• What does ER_WARN_FIELD_RESOLVED mean?

  - by VolkerK

  When SHOW WARNINGS after a EXPLAIN EXTENDED shows a Note 1276 Field or reference 'test.foo.bar' of SELECT #2 was resolved in SELECT #1 what exactly does that mean and what impact does it have? In my case it prevents mysql from using what seems to be a perfectly good index. But it's not about fixing that specific query (as it is an irrelevant test). I found http://dev.mysql.com/doc/refman/5.0/en/error-messages-server.html butError: 1276 SQLSTATE: HY000 (ER_WARN_FIELD_RESOLVED) Message: Field or reference '%s%s%s%s%s' of SELECT #%d was resolved in SELECT #%d isn't much of an explaination.

  Read the article

• MySQL/SQL: Update with correlated subquery from the updated table itself

  - by Roee Adler

  I have a generic question that I will try to explain using an example. Say I have a table with the fields: "id", "name", "category", "appearances" and "ratio" The idea is that I have several items, each related to a single category and "appears" several times. The ratio field should include the percentage of each item's appearances out of the total number of appearances of items in the category. In pseudo-code what I need is the following: For each category find the total sum of appearances for items related to it. For example it can be done with (select sum("appearances") from table group by category) For each item set the ratio value as the item's appearances divided by the sum found for the category above Now I'm trying to achieve this with a single update query, but can't seem to do it. What I thought I should do is: update Table T set T.ratio = T.appearances / ( select sum(S.appearances) from Table S where S.id = T.id ) But MySQL does not accept the alias T in the update column, and I did not find other ways of achieving this. Any ideas?

  Read the article

< Previous Page | 746 747 748 749 750 751 752 753 754 755 756 757  | Next Page >