Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Assuming you mean the Windows <code>cmd</code> interpreter (I'd be surprised if you really <em>were</em> still using DOS), the following script will do what you want:</p> <pre><code>@echo off setlocal enableextensions enabledelayedexpansion set first=1 for /f "delims=" %%i in (infile.txt) do ( if !first!==1 echo %%i set first=0 ) endlocal </code></pre> <p>With an input file of <code>infile.txt</code> as:</p> <pre><code>line 1 line 2 line 3 </code></pre> <p>this will output:</p> <pre><code>line 1 </code></pre> <p>This will still <em>process</em> all the lines, it just won't print those beyond line 1. If you want to actually stop processing, use something like:</p> <pre><code>@echo off setlocal enableextensions enabledelayedexpansion for /f "delims=" %%i in (infile.txt) do ( echo %%i goto :endfor ) :endfor endlocal </code></pre> <p>Or you could just go get your hands on <a href="http://www.cygwin.com/" rel="noreferrer">Cygwin</a> or <a href="http://gnuwin32.sourceforge.net/" rel="noreferrer">GnuWin32</a> and use the <code>head</code> program. That's what I'd do. But, if that's not an option (some workplaces don't allow it), you can create a similar cmd file in Windows itself as follows (<code>winhead.cmd</code>):</p> <pre><code>@echo off setlocal enableextensions enabledelayedexpansion if x%1x==xx goto :usage if x%2x==xx goto :usage set /a "linenum = 0" for /f "usebackq delims=" %%i in (%1) do ( if !linenum! geq %2 goto :break1 echo %%i set /a "linenum = linenum + 1" ) :break1 endlocal goto :finish :usage echo.winhead ^&lt;file^&gt; ^&lt;numlines^&gt; echo. ^&lt;file^&gt; echo. is the file to process echo. (surround with double quotes if it contains spaces). echo. ^&lt;numlines^&gt; echo. is the number of lines to print from file start. goto :finish :finish endlocal </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POBatch command to take only first line from input
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USpaxdiablo
    1. USpaxdiablo
    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. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COOh, you only need `for` if you either need all or the last input line. For getting the first line using `set /p` is much easier.
      singulars
      1. PO
      1. USJoey
    2. COYou can also avoid needing delayed expansion by testing for `first` with `if not defined first` and un-setting it after the first line.
      singulars
      1. PO
      1. USJoey
    3. COAvoid needing it? Why? It's the best thing since sliced bread! Just about every one of my scripts starts with that setlocal line; it's brilliant.
      singulars
      1. PO
      1. USpaxdiablo
 

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