logo
Tags down

shadow

Delete duplicate values


By : Jstall
Date : July 31 2020, 09:00 AM
I think the issue was by ths following , It deletes all ENAMEs, not only duplicates (i.e. it doesn't leave one row). Try something like
Table contents at beginning:
code :
SQL> select * From temp order by id;

        ID ENAME
---------- ----------
         1 Little
         2 Little          --> duplicate ENAME
         3 Foot
SQL> delete from temp a
  2  where a.rowid > (select min(b.rowid)
  3                   from temp b
  4                   where b.ename = a.ename
  5                  );

1 row deleted.
SQL> select * From temp order by id;

        ID ENAME
---------- ----------
         1 Little
         3 Foot

SQL>


Share : facebook icon twitter icon

How to Delete Duplicate Values in a HashSet


By : karthick.r
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further I think, you are missing something here. In the question you mentioned HashMap and in the implementation you have HashSet.
Remember, HashSet implements the Set interface, which does not contain duplicates.

DELETE duplicate values in SQL


By : oscillo
Date : March 29 2020, 07:55 AM
hop of those help? I'll take a stab at your problem. This is only a guess, based on the query you provided. A complete question would have described what exactly you mean by a duplicate row.
code :
delete from Registrations
where exists (
    select 1
    from Registrations r2
    where   r2.UserItemId = Registrations.UserItemId
        and r2.CourseOfferingId = Registrations.CourseOfferingId
        and r2.Id < Registrations.Id
);

this code is supposed to delete duplicate values and delete empty spaces but it is deleting unique values as well


By : Sean Patrick Parrish
Date : March 29 2020, 07:55 AM
I hope this helps . You can do that in simply just one line of code with ES6 feature and Set :
code :
var fin = ["Vivek","Vivek","Mak","Nik","Mak","Hir","Hari","Nur","Nik"];

var result = [...new Set(fin)];

console.log("Fin Total :" , fin.length , ", Result Total :" , result.length);

console.log(result);

How do I delete duplicate values in one row of a 2D Numpy array, and also delete the corresponding value in the other ro


By : Cambridge Technology
Date : March 29 2020, 07:55 AM
I wish this help you Using np.unique with return_index=True:
code :
_, idx = np.unique(x[0], return_index=1)
x[:, np.sort(idx)]
array([[ 3,  4,  2,  7,  9,  5,  1],
       [11, 10,  9,  7,  6,  4,  2]])

How to delete duplicate values?


By : malonda
Date : March 29 2020, 07:55 AM
This might help you I dynamically update the cells in columns A and B, and join both values on each row (using &) and place the values in column C. , If i wanted to create a sheet with
code :
-2        -1       0
ColA      ColB     ColC
First1    Last1    First1Last1
First2    Last2    First2Last2
First3    Last3    First3Last3
First4    Last4
Private Sub Worksheet_Change(ByVal Target As Range)
    If Intersect(Target, Columns(3)) Is Nothing Then Exit Sub
    If Target.Count > 1 Then Exit Sub
    If Application.CountIfs(Range("C1:C12"),Target.Value) > 1 Then 'checks for first/last name
        MsgBox("The name " & Target.Offset(0,-2).Value & " " & Target.Offset(0,-1).Value & " already exists." & vbNewLine & "Please enter a new name.")
    End If
End Sub
Private Sub Worksheet_Change(ByVal Target As Range)
    If Target.Count > 1 Then Exit Sub
    Dim r as long
    r = target.row
    If isempty(cells(r,1)) or isempty(cells(r,2)) then exitsub
    If Application.CountIfs(Range("B1:B12"),cells(r,2).Value,Range("A1:A12"),cells(r,1).Value) > 1 Then 'checks for first/last name
        MsgBox("The name " & cells(r,1).Value & " " & cells(r,2).Value & " already exists." & vbNewLine & "Please enter a new name.")
    End If
End Sub
Private Sub Worksheet_Change(ByVal Target As Range)
    If Target.Count > 1 Then Exit Sub
    If Intersect(Target, Range(Cells(1, 1), Cells(12, 2))) Is Nothing Then Exit Sub
    Dim r As Long
    r = Target.Row
    If IsEmpty(Cells(r, 1)) Or IsEmpty(Cells(r, 2)) Then Exit Sub
    If Application.CountIfs(Range("B1:B12"), Cells(r, 2).Value, Range("A1:A12"), Cells(r, 1).Value) > 1 Then 'checks for first/last name
        MsgBox ("The name " & Cells(r, 1).Value & " " & Cells(r, 2).Value & " already exists." & vbNewLine & "Please enter a new name.")
        Cells(r, 1).ClearContents
        Cells(r, 2).ClearContents
        Cells(r, 1).Select
    End If
End Sub
Related Posts Related Posts :
  • Display XML Schema in SQL Query Result
  • With Oracle SQL how can I find 3 days where total sum >= 150
  • Is there a way to prevent a query from setting the serial primary key?
  • how to create project id incrementally in sql based on identity column
  • SAS YYMMDD10. works but YYMMDDn10 doesn't
  • Index for join within a SQL ETL batch process
  • SQL GROUP BY clause and getting floating point 2 precision on a DATESPAN calculation with AVG
  • Count IF Function Equivalent
  • Concatenation of 2 values from same column using oracle SQL
  • SQL Filter based on Case
  • Oracle SQL Update using cursor
  • Why does this work under Microsoft SQL Server Management Studio but not under R?
  • Calculate distinct value_1 when value_2, value_3 is equal to certain value
  • Fetch data from Json array in rows and columns
  • Using insert and update on the 'when matched then' // merge
  • Update with filter on timestamp
  • Access key, value in a JSON object within an array with SQL
  • R summarise_at dynamically by condition : mean for some columns, sum for others
  • How would i leave out the name jones but display people with the same deptno
  • Data formatting in postgresql
  • ORACLE, CONNECT BY ROWNUM FROM DUAL, MULTIPLE COLUMN
  • Get the average
  • Why does request fail when filtered by st_distance in presto?
  • SQL get all raw base GROUP BY
  • Oracle SQL time difference in HH:MM:SS
  • Is there an alternative to `SELECT INTO` within an `IF EXISTS (...)`?
  • Run SAS Program (Inside the SAS project) with lines of code
  • multiple NVL parameters
  • UPPER() for special characters (ascii 181)
  • How do I store date Variable in Postgres function?
  • Extract phone number from noised string
  • How to get the list of secondary partitions of a database for a composite partition in DolphinDB
  • Create Groups in a Table if they have similar sets of fields
  • Single OR Grouped/Combined Items for Entries in a Database
  • How to pass parameter value to a stored procedure rather than text lietral in SQL Server
  • Multiple day on day changes based on dates in data as not continuous
  • I have been staring at this SQL code for hours and cannot see the problem probably just being dumb (Microsoft Access SQL
  • Using LIMIT function is subquery
  • SQL Server - OPTION CLAUSE
  • Invalid Object Name - Tried a few things
  • Assign values to variables in stored procedure
  • SQL dbms_output.put_line formatting
  • Query to return only rows that have valid emails and output only the email
  • How to combine two tables with different number of columns SQL
  • SQL sum displaying column as rows
  • SQL Multiple data stored and separated by 'char' is ok?
  • How to delete duplicate indexes
  • How to add 180 days to trandate in suiteflow on event of afterSubmit?
  • SQL Assign Unique number to each unique value in a column
  • Group by one column with different values ORACLE
  • How to make a query replace column if exist using sql-server query
  • How to find relation of a table with different table?
  • Too many subselects in Oracle Query?
  • 3 inputs for a oracle sql query
  • No matching signature for operator AND for argument types: BOOL, TIME. Supported signature: BOOL AND ([BOOL, ...])
  • SQL Server One Foreign Key From 2 Tables
  • Joining With No Key - SQL
  • Is there a way to simplify this SQL function? I feel like its redundant
  • Select in where condition is slow
  • Need correction
  • shadow
    Privacy Policy - Terms - Contact Us © voile276.org