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  • Create table from a business object with conditional layout

    - by Simon Martin
    I need to generate a table from a List(Of Students). My Student class has properties for AcademicYear, TeachingSet, Surname and Forenames, is sorted in that order and also properties for ID and start date. The table should nest TeachingSets within AcademicYears and then the students within the TeachingSets, as shown in the table I've mocked up at http://www.ifslearning.ac.uk/files/student-table.jpg Using a repeater I get 08-10 students B74394 Mzejb Bsppn 08-10 students B74395 Lbuifsjof Bvti 08-10 students C68924 Epoob Cmpblf 08-10 students D41468 Ipxbse Dbwfz But I need to have 08-10 students - B74394 Mzejb Bsppn - B74395 Lbuifsjof Bvti - C68924 Epoob Cmpblf - D41468 Ipxbse Dbwfz

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  • Passing list and dictionary type parameter with Python

    - by prosseek
    When I run this code def func(x, y, *w, **z): print x print y if w: print w if z: print z else: print "None" func(10,20, 1,2,3,{'k':'a'}) I get the result as follows. 10 20 (1, 2, 3, {'k': 'a'}) None But, I expected as follows, I mean the list parameters (1,2,3) matching *w, and dictionary matching **z. 10 20 (1,2,3) {'k':'a'} Q : What went wrong? How can I pass the list and dictionary as parameters? Added func(10,20, 10,20,30, k='a') seems to be working

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  • java source code doubt

    - by abson
    this compiles class ex1 { public int show() { try { int a=10/10; return 10;} catch(ArithmeticException e) { System.out.println(e); } finally { System.out.println("Finally");} System.out.println("hello"); return 20; } } on the other hand this doesn't class ex15 { public int show() { try { int a=10/0; return 10;} catch(ArithmeticException e) { System.out.println(e); } finally { System.out.println("Finally"); return 40;} System.out.println("hello"); return 20; } } why is it so?

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  • Audit Table using Triggers

    - by Jose
    DROP TABLE IF EXISTS `actividades`.`act_actividad_audit`; CREATE TABLE `actividades`.`act_actividad_audit` ( `fe_creacion` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, `usr_digitador` char(10) NOT NULL, `ip_digitador` char(15) NOT NULL, `id_act_actividad` int(10) unsigned NOT NULL, `titulo` char(64) NOT NULL, `act_prioridad_id` int(10) unsigned NOT NULL, `act_motivo_id` int(10) unsigned NOT NULL, `detalle` text, `detalle_tecnico` text, `hostname_id` int(10) unsigned NOT NULL, `hostname_nombre` char(50) NOT NULL, `es_SMOP` tinyint(1) NOT NULL, `url_SMOP` text, `es_tecnico` tinyint(1) NOT NULL ) ENGINE=InnoDB DEFAULT CHARSET=latin1 COMMENT='Auditoria Actividad General'; I want to populate that audit table with a trigger but how can i send or fill the values for usr_digitador or ip_digitador if that values are on client side.? please help

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  • C# Expression Tree Simple Arithmetic

    - by Richard Adnams
    Hello, I've been trying to figure out how to achieve some simple maths using the Expression class. What I'm trying to do is this (1 + 10 * 15) When I try to do this via Expression.Add and Expression.Constant but the result I get is this ((1 + 10) * 15) Which is not right as it evaluates the 1 + 10 first instead of 10 * 15. Is there a way to combine Expression.Add/Multiply etc.. without it creating the brackets? I assume there is but I just can't find where or how! The test code I have is this var v1 = Expression.Constant(1, typeof(int)); var v2 = Expression.Constant(10, typeof(int)); var v3 = Expression.Constant(15, typeof(int)); var a1 = Expression.Add(v1, v2); var m2 = Expression.Multiply(a1, v3); Thanks for your time, Richard.

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  • Binning a numeric variable in R

    - by McPeterson
    I have a vector X that contains positive numbers that I want to bin/discretize. For this vector, I want the numbers [0, 10) to show up just as they exist in the vector, but numbers [10,∞) to be 10+. I'm using: x <- c(0,1,3,4,2,4,2,5,43,432,34,2,34,2,342,3,4,2) binned.x <- as.factor(ifelse(x > 10,"10+",x)) but this feels klugey to me. Does anyone know a better solution or a different approach? mcpeterson

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  • Summing the results of Case queries in SQL

    - by David Stelfox
    I think this is a relatively straightforward question but I have spent the afternoon looking for an answer and cannot yet find it. So... I have a view with a country column and a number column. I want to make any number less than 10 'other' and then sum the 'other's into one value. For example, AR 10 AT 7 AU 11 BB 2 BE 23 BY 1 CL 2 I used CASE as follows: select country = case when number < 10 then 'Other' else country end, number from ... This replaces the countries values with less than 10 in the number column to other but I can't work out how to sum them. I want to end up with a table/view which looks like this: AR 10 AU 11 BE 23 Other 12 Any help is greatly appreciated. Cheers, David

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  • select rows with unidentical column values

    - by Bazon
    Hi Guys, I need to create a new data frame that excludes dams that appear in "dam1" and "dam2" columns on the same fosdate (fostering date). I tried df <- df[df$dam1!=dam2,] but did not work. Dam1 and dam2 are factors which are the ids's of mothers. my df: fosdate dam1 dam2 8/09/2009 2Z523 2Z523 30/10/2009 1W509 5C080 30/10/2009 1W509 5C640 30/10/2009 1W509 1W509 1/10/2009 1W311 63927 The new data frame that I need to get is: dfnew: fosdate dam1 dam2 30/10/2009 1W509 5C080 30/10/2009 1W509 5C640 1/10/2009 1W311 63927 Would appreciate any help! Bazon

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  • killall httpd for sleep process

    - by user172697
    Hello guys this shell explain the issue , after executing the .sh file halt and nothing happen , any clue where is my mistake its kill httpd if there is more than 10 sleep process and start the httpd with zero sleep process #!/bin/bash #this means loop forever while [ 1 ]; do HTTP=`ps auwxf | grep httpd | grep -v grep | wc -l`; #the above line counts the number of httpd processes found running #and the following line says if there were less then 10 found running if [ $[HTTP] -lt 10 ]; then killall -9 httpd; #inside the if now, so there are less then 10, kill them all and wait 1 second sleep 1; #start apache /etc/init.d/httpd start; fi; #all done, sleep for ten seconds before we loop again sleep 10;done

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  • How to override ggplot2's axis formatting?

    - by Richie Cotton
    When you choose a log scale, ggplot2 formats the breaks like 10^x. I'd like it to not do that. For example, the code below should display a graph with ticks at 1, 2, 5 etc, not 10^0, 10^0.3, 10^0.69 etc. library(ggplot2) dfr <- data.frame(x = 1:100, y = rlnorm(100)) breaks <- as.vector(c(1, 2, 5) %o% 10^(-1:1)) p1 <- ggplot(dfr, aes(x, y)) + geom_point() + scale_y_log10(breaks = breaks) print(p1) I guess that adding a formatter argument to scale_y_log10 would do the trick, but I'm not sure what to put in the argument, or where the options might be documented.

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  • R ggplot barplot; Fill based on two separate variables

    - by user1476968
    A picture says more than a thousand words. As you can see, my fill is based on the variable variable. Within each bar there is however multiple data entities (black borders) since the discrete variable complexity make them unique. What I am trying to find is something that makes each section of the bar more distinguishable than the current look. Preferable would be if it was something like shading. Here's an example (not the same dataset, since the original was imported): dat <- read.table(text = "Complexity Method Sens Spec MMC 1 L Alpha 50 20 10 2 M Alpha 40 30 80 3 H Alpha 10 10 5 4 L Beta 70 50 60 5 M Beta 49 10 80 6 H Beta 90 17 48 7 L Gamma 19 5 93 8 M Gamma 18 39 4 9 H Gamma 10 84 74", sep = "", header=T) library(ggplot2) library(reshape) short.m <- melt(dat) ggplot(short.m, aes(x=Method, y= value/100 , fill=variable)) + geom_bar(stat="identity",position="dodge", colour="black") + coord_flip()

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  • Problem with the program!

    - by hopefulLLl
    Can you tell me what is the problem with this function. Can you help me to find the sum of digits of a number? #include<stdio.h> #include<math.h> void main() { int a,i=0,j=10,k,n=0,m; scanf("%d",&a); while((a%j!=0)&&i>=0) { m=pow(10,(i+1)); k=a%m; n=(a-(k*m)-n)/(m/10)+n; j=m*10; i++; } n=n+(n/(m/10)); printf("%d",n); } I need to use just the while loop... or the for loop! when i run it it shows"resumable processor fault"..help!

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  • Speed up the loop operation in R

    - by Kay
    Hi, i have a big performance problem in R. I wrote a function that iterates over an data.frame object. It simply adds a new col to a data.frame and accumulate sth. (simple operation). The data.frame has round about 850.000 rows. My PC is still working about 10h now and i have no idea about the runtime. dayloop2 <- function(temp){ for (i in 1:nrow(temp)){ temp[i,10] <- i if (i > 1) { if ((temp[i,6] == temp[i-1,6]) & (temp[i,3] == temp[i-1,3])) { temp[i,10] <- temp[i,9] + temp[i-1,10] } else { temp[i,10] <- temp[i,9] } } else { temp[i,10] <- temp[i,9] } } names(temp)[names(temp) == "V10"] <- "Kumm." return(temp) } Any ideas how to speed up this operation ?

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  • problem with parsing string from excel file

    - by ohana
    hi, i have ruby code to parse data in excel file using Parseexcel gem. I need to save 2 columns in that file into a Hash, here is my code: worksheet.each { |row| if row != nil key = row.at(1).to_s.strip value = row.at(0).to_s.strip if !parts.has_key?(key) and key.length 0 parts[key] = value end end } however it still save duplicate keys into the hash: "020098-10". I checked the excel file at the specified row and found the difference are " 020098-10" and "020098-10". the first one has a leading space while the second doesn't. I dont' understand is it true that .strip function already remove all leading and trailing white space? also when i tried to print out key.length, it gave me these weird number: 020098-10 length 18 020098-10 length 17 which should be 9....

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  • sql server swap data between rows problem

    - by AmRoSH
    I was asking b4 about swaping query to swap data between rows in same table and i got that qurey ALTER PROCEDURE [dbo].[VehicleReservationsSwap] -- Add the parameters for the stored procedure here (@FirstVehicleID int, @secondVehicleID int, @WhereClause nvarchar(2000)) AS BEGIN Create Table #Temp ( VehicleID int ,VehicleType nvarchar(100) ,JoinId int ) DECLARE @SQL varchar(8000) SET @SQL ='Insert into #Temp (VehicleID,VehicleType,JoinId) SELECT VehicleID,VehicleType,CASE WHEN VehicleID = ' + Cast(@FirstVehicleID as varchar(10)) + ' then ' + Cast(@secondVehicleID as varchar(10)) + ' ELSE ' + Cast(@FirstVehicleID as varchar(10)) + ' END AS JoinId FROM Reservations WHERE VehicleID in ( ' + Cast(@FirstVehicleID as varchar(10)) + ' , ' + Cast(@secondVehicleID as varchar(10)) + ' )' + @WhereClause EXEC(@SQL) --swap values UPDATE y SET y.VehicleID = #Temp.VehicleID ,y.VehicleType = #Temp.VehicleType FROM Reservations y INNER JOIN #Temp ON y.VehicleID = #Temp.JoinId WHERE y.VehicleID in (@FirstVehicleID,@secondVehicleID) Drop Table #Temp END this query take 2 parameters and swaping all rows returned for each parameter. the problem is the query swaps just if each parameter (forign key) has values I need to make swaping in case if one of them has no vlue. I hope if some one can help me in that . Thanks,

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  • Adjusting server-side tickrate dynamically

    - by Stuart Blackler
    I know nothing of game development/this site, so I apologise if this is completely foobar. Today I experimented with building a small game loop for a network game (think MW3, CSGO etc). I was wondering why they do not build in automatic rate adjustment based on server performance? Would it affect the client that much if the client knew this frame is based on this tickrate? Has anyone attempted this before? Here is what my noobish C++ brain came up with earlier. It will improve the tickrate if it has been stable for x ticks. If it "lags", the tickrate will be reduced down by y amount: // GameEngine.cpp : Defines the entry point for the console application. // #ifdef WIN32 #include <Windows.h> #else #include <sys/time.h> #include <ctime> #endif #include<iostream> #include <dos.h> #include "stdafx.h" using namespace std; UINT64 GetTimeInMs() { #ifdef WIN32 /* Windows */ FILETIME ft; LARGE_INTEGER li; /* Get the amount of 100 nano seconds intervals elapsed since January 1, 1601 (UTC) and copy it * to a LARGE_INTEGER structure. */ GetSystemTimeAsFileTime(&ft); li.LowPart = ft.dwLowDateTime; li.HighPart = ft.dwHighDateTime; UINT64 ret = li.QuadPart; ret -= 116444736000000000LL; /* Convert from file time to UNIX epoch time. */ ret /= 10000; /* From 100 nano seconds (10^-7) to 1 millisecond (10^-3) intervals */ return ret; #else /* Linux */ struct timeval tv; gettimeofday(&tv, NULL); uint64 ret = tv.tv_usec; /* Convert from micro seconds (10^-6) to milliseconds (10^-3) */ ret /= 1000; /* Adds the seconds (10^0) after converting them to milliseconds (10^-3) */ ret += (tv.tv_sec * 1000); return ret; #endif } int _tmain(int argc, _TCHAR* argv[]) { int sv_tickrate_max = 1000; // The maximum amount of ticks per second int sv_tickrate_min = 100; // The minimum amount of ticks per second int sv_tickrate_adjust = 10; // How much to de/increment the tickrate by int sv_tickrate_stable_before_increment = 1000; // How many stable ticks before we increase the tickrate again int sys_tickrate_current = sv_tickrate_max; // Always start at the highest possible tickrate for the best performance int counter_stable_ticks = 0; // How many ticks we have not lagged for UINT64 __startTime = GetTimeInMs(); int ticks = 100000; while(ticks > 0) { int maxTimeInMs = 1000 / sys_tickrate_current; UINT64 _startTime = GetTimeInMs(); // Long code here... cout << "."; UINT64 _timeTaken = GetTimeInMs() - _startTime; if(_timeTaken < maxTimeInMs) { Sleep(maxTimeInMs - _timeTaken); counter_stable_ticks++; if(counter_stable_ticks >= sv_tickrate_stable_before_increment) { // reset the stable # ticks counter counter_stable_ticks = 0; // make sure that we don't go over the maximum tickrate if(sys_tickrate_current + sv_tickrate_adjust <= sv_tickrate_max) { sys_tickrate_current += sv_tickrate_adjust; // let me know in console #DEBUG cout << endl << "Improving tickrate. New tickrate: " << sys_tickrate_current << endl; } } } else if(_timeTaken > maxTimeInMs) { cout << endl; if((sys_tickrate_current - sv_tickrate_adjust) > sv_tickrate_min) { sys_tickrate_current -= sv_tickrate_adjust; } else { if(sys_tickrate_current == sv_tickrate_min) { cout << "Please reduce sv_tickrate_min..." << endl; } else{ sys_tickrate_current = sv_tickrate_min; } } // let me know in console #DEBUG cout << "The server has lag. Reduced tickrate to: " << sys_tickrate_current << endl; } ticks--; } UINT64 __timeTaken = GetTimeInMs() - __startTime; cout << endl << endl << "Total time in ms: " << __timeTaken; cout << endl << "Ending tickrate: " << sys_tickrate_current; char test; cin >> test; return 0; }

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  • problem with the programme!!

    - by hopefulLLl
    kindly tell me what is the pblm with this function wont it help me find the sum of digits of a number?? #include<stdio.h> #include(math.h) void main() { int a,i=0,j=10,k,n=0,m; scanf("%d",&a); while((a%j!=0)&&i>=0) { m=pow(10,(i+1)); k=a%m; n=(a-(k*m)-n)/(m/10)+n; j=m*10; i++; } n=n+(n/(m/10)); printf("%d",n); } i know the parenthesis used with math.h are nt right..what else is the pblm..i need to use just while loop..or the for loop!

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  • select rows with unidentical column values using R

    - by Bazon
    Hi Guys, I need to create a new data frame that excludes dams that appear in "dam1" and "dam2" columns on the same fosdate (fostering date). I tried df <- df[df$dam1!=df$dam2,] but did not work. Dam1 and dam2 are factors which are the ids's of mothers. my df: fosdate dam1 dam2 8/09/2009 2Z523 2Z523 30/10/2009 1W509 5C080 30/10/2009 1W509 5C640 30/10/2009 1W509 1W509 1/10/2009 1W311 63927 The new data frame that I need to get is: dfnew: fosdate dam1 dam2 30/10/2009 1W509 5C080 30/10/2009 1W509 5C640 1/10/2009 1W311 63927 Would appreciate any help! Bazon

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  • Fedora 14 update probelem

    - by Marko
    How is everybody doin? :) Im having this problem with Fedora 14 update for last couple of weeks.. when I run yum update I get the following result: Running rpm_check_debug ERROR with rpm_check_debug vs depsolve: kernel-uname-r = 2.6.32.10-90.fc12.i686.PAE is needed by (installed) kmod-nvidia-2.6.32.10-90.fc12.i686.PAE-1:195.36.15-1.fc12.1.i686 kernel-uname-r = 2.6.32.16-150.fc12.i686.PAE is needed by (installed) kmod-nvidia-2.6.32.16-150.fc12.i686.PAE-1:195.36.31-1.fc12.2.i686 kernel-uname-r = 2.6.32.21-168.fc12.i686.PAE is needed by (installed) kmod-nvidia-2.6.32.21-168.fc12.i686.PAE-1:195.36.31-1.fc12.5.i686 kernel-uname-r = 2.6.32.10-90.fc12.i686.PAE is needed by (installed) kmod-nvidia-2.6.32.10-90.fc12.i686.PAE-1:195.36.15-1.fc12.1.i686 kernel-uname-r = 2.6.32.16-150.fc12.i686.PAE is needed by (installed) kmod-nvidia-2.6.32.16-150.fc12.i686.PAE-1:195.36.31-1.fc12.2.i686 kernel-uname-r = 2.6.32.21-168.fc12.i686.PAE is needed by (installed) kmod-nvidia-2.6.32.21-168.fc12.i686.PAE-1:195.36.31-1.fc12.5.i686 Please report this error in http://yum.baseurl.org/report ** Found 9 pre-existing rpmdb problem(s), 'yum check' output follows: VirtualBox-3.2-3.2.10_66523_fedora13-1.i686 has missing requires of libpython2.6.so.1.0 VirtualBox-3.2-3.2.10_66523_fedora13-1.i686 has missing requires of python(abi) = ('0', '2.6', None) 1:kmod-nvidia-2.6.32.10-90.fc12.i686.PAE-195.36.15-1.fc12.1.i686 has missing requires of kernel-uname-r = ('0', '2.6.32.10', '90.fc12.i686.PAE') 1:kmod-nvidia-2.6.32.16-150.fc12.i686.PAE-195.36.31-1.fc12.2.i686 has missing requires of kernel-uname-r = ('0', '2.6.32.16', '150.fc12.i686.PAE') 1:kmod-nvidia-2.6.32.21-168.fc12.i686.PAE-195.36.31-1.fc12.5.i686 has missing requires of kernel-uname-r = ('0', '2.6.32.21', '168.fc12.i686.PAE') mysql-workbench-gpl-5.2.28-1fc13.i386 has missing requires of libpython2.6.so.1.0 pysvn-1.7.2-1.fc13.i686 has missing requires of python(abi) = ('0', '2.6', None) system-config-display-2.2-1.fc12.i686 has missing requires of libpython2.6.so.1.0 system-config-display-2.2-1.fc12.i686 has missing requires of python(abi) = ('0', '2.6', None) does anybody have a similar issue?

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  • Between/Timerange LINQ

    - by dezza
    My intention here is to select all entries (Bookings) between "begin" (begin_prefix) and "end" (end_prefix) BUT! The important thing is: If I have a booking at 07:25-10:00 - you query for 09:00-10:00 it should still show the booking because it reserves the room until 10 no matter what .. So .. 07.25-10.00 booking means query for 09:00-10.00 still returns a list of bookings within 09:00-10.00 (which means 07.25-10.00 is included) public static List<booking> Today(DateTime begin, DateTime end) { try { IFormatProvider Culturez = new CultureInfo(ConfigurationManager.AppSettings["locale"].ToString(), true); DateTime begin_prefix = DateTime.ParseExact(begin.ToString(), "dd-MM-yyyy HH:mm:ss", Culturez); DateTime end_prefix = DateTime.ParseExact(end.ToString(), "dd-MM-yyyy HH:mm:ss", Culturez); dbDataContext db = new dbDataContext(); // gives bookings BEFORE begin_prefix (why?) IQueryable<booking> bQ = from b in db.bookings where begin_prefix >= b.Starts && b.Ends <= end_prefix && b.Ends > b.Starts && b.pointsbookings.Count > 0 select b; // ^gives bookings BEFORE begin_prefix (why?) List<booking> bL = bQ.ToList(); return bL; } catch (Exception) { throw; } } I've tried getting this right for some time now .. Seems everytime I correct it to something new, a new overlap or selection outside the two begin/end dates seem to appear :( UPDATE CRITERIA and SOURCE: Bookings has to be WITHIN "begin_prefix" and "end_prefix" or on the exact same time .. .. currently the above code gives me bookings BEFORE begin_prefix date, which is not intentioned! We're in 2011, I got bookings from 2010 as well! ** NEW!! UPDATED: This is what I have: SEARCH.START = BOOKING.START BOOKING.END <= SEARCH.END ... the problem comes up when .. BOOKING entry: 10:00(Start)-14:00(End) This means according to above: 08.59 = 10.00 (SEARCH.START = BOOKING.START) It will never include it. But it should, since this is the same room and the seats are booked individually!

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  • how to optimize an oracle query that has to_char in where clause for date

    - by panorama12
    I have a table that contains about 49403459 records. I want to query the table on a date range. say 04/10/2010 to 04/10/2010. However, the dates are stored in the table as format 10-APR-10 10.15.06.000000 AM (time stamp). As a result. When I do: SELECT bunch,of,stuff,create_date FROM myTable WHERE TO_CHAR (create_date,'MM/DD/YYYY)' >= '04/10/2010' AND TO_CHAR (create_date, 'MM/DD/YYYY' <= '04/10/2010' I get 529 rows but in 255.59 seconds! which is because I guess I am doing to_char on EACH record. However, When I do SELECT bunch,of,stuff,create_date FROM myTable WHERE create_date >= to_date('04/10/2010','MM/DD/YYYY') AND create_date <= to_date('04/10/2010','MM/DD/YYYY') then I get 0 results in 0.14 seconds. How can I make this query fast and still get valid (529) results?? At this point I can not change indexes. Right now I think index is created on create_date column

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  • Python interpreter invocation with "-c" and indentation issues

    - by alexander
    I'm trying to invoke Python using the "-c" argument to allow me to run some arbitrary python code easily, like this: python.exe -c "for idx in range(10): print idx" Now this code works fine, from within my batch file, however, I'm running into problems when I want to do anything more than this. Consider the following Python code: foo = 'bar' for idx in range(10): print idx this would then give you 0-9 on the stdout. However, if I collapse this into a single line, using semicolons as delimiters, to get the following: foo = 'bar';for idx in range(10): print idx and try to run it using python.exe -c it get a SyntaxError raised: C:\Python>python.exe -c "foo = 'bar';for idx in range(10): print idx" File "<string>", line 1 foo = 'bar';for idx in range(10): print idx ^ SyntaxError: invalid syntax Anyone know how I can actually use this without switching to a separate .py file?

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  • VB.net Need Text Box to Only Accept Numbers

    - by Rico Jackson
    I'm fairly new to VB.net (self taught) and was just wondering if someone out there could help me out with some code. I'm not trying to do anything to invovled, just have a textbox that takes numeric value from 1 to 10. I don't want it to take a string or any number above 10. If some types a word or character an error message will appear, telling them to enter a valid number. This is what I have, obviously it's not great as I am having problems. Thanks again to anyone who can help. If TxtBox.Text > 10 Then MessageBox.Show("Please Enter a Number from 1 to 10") TxtBox.Focus() ElseIf TxtBox.Text < 10 Then MessageBox.Show("Thank You, your rating was " & TxtBox.Text) Total = Total + 1 ElseIf IsNumeric(TxtBox.Text) Then MessageBox.Show("Thank you, your rating was " & ValueTxtBox.Text) End If ValueTxtBox.Clear() ValueTxtBox.Focus()

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  • Best indexing strategy for several varchar columns in Postgres

    - by Corey
    I have a table with 10 columns that need to be searchable (the table itself has about 20 columns). So the user will enter query criteria for at least one of the columns but possibly all ten. All non-empty criteria is then put into an AND condition Suppose the user provided non-empty criteria for column1 and column4 and column8 the query would be: select * from the_table where column1 like '%column1_query%' and column4 like '%column4_query%' and column8 like '%column8_query%' So my question is: am I better off creating 1 index with 10 columns? 10 indexes with 1 column each? Or do I need to find out what sets of columns are queried together frequently and create indexes for them (an index on cols 1,4 and 8 in the case above). If my understanding is correct a single index of 10 columns would only work effectively if all 10 columns are in the condition. Open to any suggestions here, additionally the rowcount of the table is only expected to be around 20-30K rows but I want to make sure any and all searches on the table are fast. Thanks!

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