sql - Duplicate rows in Oracle -


How can I choose duplicate rows in a selected question?

  • The user1
  • user2
    • / Li>
  • User 3
  • Date

    • In my query, I need to select the data for a particular user, which is displayed by the user The ones are entered in the end .. If the user enters 1, then the selection query should recover the data for user 1.

    I am currently doing this: 

      Select the name, type from the user1 table 1 command;

    But am I getting redundant rows in the result ??

    Am I doing wrong? How to Avoid These Duplicate Rows?

    Please help ...

    You have two different options to choose from Or use a segment by a group. You also have a date column and in Oracle that means it's time to be safe, you should reduce the date column. Even if you know that no part of time is included, erase it anyway. It is a good practice that when you see the date, you consider that it has time.

    On the next issue you will have to face, you can not ordinate BY column that is not part of SELECT.

    My recommendation is a group BY. 

      SELECT user1, name, type, date, date, date, user, user 1, name, type, TRUNC (date) by user ORDER BY user1

    Comments

    Post a Comment

    Popular posts from this blog

    python - Overriding the save method in Django ModelForm -

    I'm having trouble overriding a ModelForm save method. I get this error I'm: Exception type: TypeErier Exception Value: Save () found an unexpected keyword argument 'committed' My intentions include a form 3 fields Submit several values ​​for, then create an object for each combination of those areas, and to save each object file models.py class collarsult type (models.Model): id = model. AutoField (db_column = 'icontact_result_code_type_id', primary_key = true) callResult = models.ForeignKey ( 'CallResult', db_column = 'icontact_result_code_id') campaign = models.ForeignKey ( 'campaign', db_column = 'icampaign_id') CALLTYPE = models.ForeignKey ( 'CALLTYPE', db_column = 'icall_type_id') agent = models.BooleanField (db_column = 'bagent', default = true) teamLeader = models.BooleanField (db_column = 'bTeamLeader', default = true) active = models.BooleanField (db_column = Django.form...
    Read more

    html - CSS autoheight, but fit content to height of div -

    I have a div in which there are three children- div in the left and middle div: float: left while true: float: true because it is my layout Actually will spoil, I've used ClearFix Hack: .cf {zoom: 1; }. Cf: First,. Cf: {content: ""; Display: Table; }. Cf: After {clear: both; } It still works, but I want to be the right div an indicator. So it should fill 100% of the parent unit of height. How can I complete this? PS is the full code: & Lt; / Div & gt; & Lt; Div class = "mobile_content" & gt; & Lt; H5 & gt; {{Data.titel}} & lt; / H5> & Lt; Table & gt; & Lt; TR & gt; & Lt; Th & gt; Komponist: & lt; / Th & gt; & Lt; TD & gt; {{Data.komponist}} & lt; / TD & gt; & Lt; / TR & gt; & Lt; TR & gt; & Lt; Th & gt; Instrument: & lt; / Th & gt; & Lt; TD & gt; {{Data.instrumente}} & lt; / TD & gt; & Lt; / TR & gt;...
    Read more

    qt - How to prevent QAudioInput from automatically boosting the master volume to 100%? -

    I have been trying to use Qt5 multimedia to record audio with QAudioInput, however, when I see If QAudioInput is started, it increases the master volume of my sound device to 100%. How can I prevent QAudioInput from changing the master volume? My current development platform is Linux with PalsAdio (with flat audio disabled). How can I use QAudioInput : QAudioDeviceInfo device_info = QAudioDeviceInfo :: defaultInputDevice (); QAudio format format; Format.setSampleRate (44100); Format.setChannelCount (1); Format.setSampleSize (16); Format.setCodec ("Audio / PCM"); Format.setSampleType (QAudioFormat :: SignedInt); Format.setByteOrder (QAudioFormat :: LittleEndian); Std :: cout & lt; & Lt; Device_info.deviceName (). ToUtf8 (). ConstData () & lt; & Lt; Std :: endl; QAudioInput * default_device = new QAudioInput (device_info, format); QIODevice * default_io_device = default_device-> Start (); a QAudioInput.setVolume () method is not you I ...
    Read more