Android SQLite query returning multiple same columns -

-

this query below in android sqlite returning multiple of same columns. example, returning "meet_id" (3) times. first (2) "meet_id" correct right number while third 1 empty. same happens "athlete_id" , "event_id". assuming because of left join since 3rd table empty of shouldn't if return 1 column each column attribute (1 meet column , more rows?):

cursor cursortemp = db.rawquery("select * " + table_meets + " left join " + table_meets_athletes +                 " on " + table_meets + "." + col_meet_id + " = " + table_meets_athletes + "." + col_meet_id +                 " left join " + table_meets_athletes_splits + " on " + table_meets_athletes + "." + col_meet_id +                 " = " + table_meets_athletes_splits + "." + col_meet_id + " , " + table_meets_athletes +                 "." + col_athlete_id + " = " + table_meets_athletes_splits + "." + col_athlete_id + " , " +                 table_meets_athletes + "." + col_event_id + " = " + table_meets_athletes_splits + "." +                 col_event_id + " " + table_meets + "." + col_meet_id + " = ?", new string[]{string.valueof(i)});

i understand bit messy raw queries more

also, meet id primary key in first table , composite in 2nd , 3rd

in instruction select * from..., * symbol includes columns result. resulting of multiple joins, columns repeated. suggestion replacing * columns names of interest.


Comments

Post a Comment

Popular posts from this blog

java - Andrioid studio start fail: Fatal error initializing 'null' -

-
i don't know happened android studio，when start ，it shows me error message below. , try uninstall/reinstall it,but doesn't work.who can me!!! internal error. please report https://code.google.com/p/android/issues java.lang.runtimeexception: com.intellij.ide.plugins.pluginmanager$startupabortedexception: fatal error initializing 'null' @ com.intellij.idea.ideaapplication.run(ideaapplication.java:178) @ com.intellij.idea.mainimpl$1$1$1.run(mainimpl.java:52) @ java.awt.event.invocationevent.dispatch(invocationevent.java:209) @ java.awt.eventqueue.dispatcheventimpl(eventqueue.java:715) @ java.awt.eventqueue.access$400(eventqueue.java:82) @ java.awt.eventqueue$2.run(eventqueue.java:676) @ java.awt.eventqueue$2.run(eventqueue.java:674) @ java.security.accesscontroller.doprivileged(native method) @ java.security.accesscontrolcontext$1.dointersectionprivilege(accesscontrolcontext.java:86) @ java.awt.eventqueue.dispatchevent(eventqu
Read more

android - Gradle sync Error:Configuration with name 'default' not found -

-
i want add external library guillotinemenu-android in application. followed steps given in upvoted answer existing question how add library project android studio? facing error when try build project after step 6 i.e. when added dependency in app/build.gradle compile project(":guillotinemenu") . tried stackoverflow links related error not working out. have made folder named libs in app directory , copied project folder guillotine menu there. here build.gradle(module:app) file apply plugin: 'com.android.application' android { compilesdkversion 22 buildtoolsversion "22.0.1" defaultconfig { applicationid "com.sunshine.bbreaker.appet_i" minsdkversion 14 targetsdkversion 22 versioncode 1 versionname "1.0" } buildtypes { release { minifyenabled false proguardfiles getdefaultproguardfile('proguard-android.txt'), 'proguard-rules.p
Read more

StringGrid issue in Delphi XE8 firemonkey mobile app -

-
i'm using delphi xe8 developing mobile application , i'm facing of problem in tstringgrid. i have written following code in stringgridselectcell event. showmessage(stringgrid.cells[0, arow]); and shows proper value of selected row @ first time. when have tried click again selected row, event not getting fired. , cant able unselect particular row. so, have tried write message in onclick event. var irowind: integer; begin irowind := stringgrid1.selected; showmessage(stringgrid.cells[0, irowind]); end; and not working @ first time of click , when clicked second time works properly. issue in android mobile , not in windows. later, have kept both event code , faced issue. when i'm scrolling grid, firing onclick event. so, displaying selected row value. please provide me solution. , in advance. let's onclick event: procedure tfmmain.stringgrid1click(sender: tobject); begin caption := 'selected row id: ' + stringgrid1.select
Read more