Databases
StackOverflow2013
Postsdbo
POHow to remove duplicate lines from text file having more than 200K rows and its size is 1 GB?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POHow to remove duplicate lines from text file having more than 200K rows and its size is 1 GB?
    primarykey
    data
    text
    <p>Presently i am using following code......its working for only 300 lines of text file..and it will take 2minits to execute this program code... but my text file is having more than 200k of rows(lines), so this code is not working for that file...so plz anyone help me to solve this problem...thanks in advance..</p> <pre><code>string[] source = System.IO.File.ReadAllLines(@"C:\Documents and Settings\finaloutput.txt"); var q1 = (from line in source let fields = line.Split(',') select new { autoid = fields[0], ATMID = fields[4], DATE = fields[2], TIME = fields[3], CARDNo = fields[5], TRANSId = fields[6], SEQNo = fields[7], TRANSIT = fields[8], CheckNo = fields[9], CATEGORY = fields[10], SCORE = fields[11], //THRESHOLD = fields[12] }); var ids = (from d in q1 where d.CATEGORY != "Accepted" group d by new { d.ATMID, d.DATE, d.CARDNo, d.TRANSIT, d.CheckNo } into grp select grp.Min(x =&gt; x.autoid)); var toDelete = (from d in q1 where !ids.Contains(d.autoid) &amp;&amp; d.CATEGORY != "Accepted" select d.autoid); // source1.DeleteOnSubmit(toDelete); var distinct = (from d in q1 where !toDelete.Contains(d.autoid) select d); // Makes a list of the DeletedFields // var list_Of_CSV_ItemsDeleted = distinct.Select(x =&gt; string.Join(",", x.autoid)); // Makes a list of the distinct Fields var list_Of_CSV_ItemsDistinct = distinct.Select(x =&gt; string.Join(",", x.autoid, x.ATMID, x.DATE, x.TIME, x.CARDNo, x.TRANSId, x.SEQNo, x.TRANSIT, x.CheckNo, x.CATEGORY, x.SCORE)); System.IO.File.WriteAllLines(@"C:\Documents and Settings\distict1.txt", list_Of_CSV_ItemsDistinct); </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USHenk Holterman
    1. USDotNetShabbeer
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POHow to remove duplicate lines from text file having more than 200K rows and its size is 1 GB?
      1. This table or related slice is empty.
      1. VTDownMod
    2. VO
      singulars
      1. POHow to remove duplicate lines from text file having more than 200K rows and its size is 1 GB?
      1. This table or related slice is empty.
      1. VTClose
    3. VO
      singulars
      1. POHow to remove duplicate lines from text file having more than 200K rows and its size is 1 GB?
      1. This table or related slice is empty.
      1. VTClose
    1. COWhat is "2 lacs of rows(lines)"? I assume it's a big number.
      singulars
      1. POHow to remove duplicate lines from text file having more than 200K rows and its size is 1 GB?
      1. USDan Pichelman
    2. CO@DanPichelman a `lac` is 100K.
      singulars
      1. POHow to remove duplicate lines from text file having more than 200K rows and its size is 1 GB?
      1. USMike Perrenoud
    3. CO@MichaelPerrenoud - that's a new one to me. Thanks
      singulars
      1. POHow to remove duplicate lines from text file having more than 200K rows and its size is 1 GB?
      1. USDan Pichelman
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload