SELECT 1 SQL statement

Whats the meaning of SELECT 1 SQL statement? I have come across this sql select * from category where exists ( select (1) from products where category.id = products.id ) . . .

• 4
• 0
• 1449

MySQL: List all foreign keys in a table

How do i list all the foreign keys in a MySQL table?   . . .

• 3
• 1
• 1444

E212: Can't open file for writing

I'm trying to edit the file /etc/samba/smb.conf in my Raspberry Pi using vi editor. When i try to save the file i get  this error "/etc/samba/smb.conf" E212: Can't open file for writing I am l . . .

• 1
• 0
• 1409

Powershell to get a file's size on disk

I want to write a powershell script that gives the actual size on disk of a list of files. i know (Get-Item filename).length will give you the size. But this is the size of the file and not the actual . . .

• 0
• 0
• 1395

MongoDB migrations: Declaration of Jenssegers\Mongodb\Schema\Blueprint::primary() not compatible

I am using Laravel 5.3 with jenssegers mongodb package. I am getting this error when running php artisan migrate     [ErrorException]   Declaration of Jenssegers\Mongodb\Schema\Blue . . .

• 0
• 0
• 1369

How do i uncompress a tar.xz file?

What are the arguments to tar command for extracting from tar.xz? . . .

• 1
• 0
• 1365

What is the purpose of "use strict" in Javascript?

Some of the javascript codebase that I am working on has  "use strict"; What is the use of this? . . .

• 2
• 0
• 1334

How can I view the output of dbms_output.put_line in SQL Developer?

In Oracle SQL developer where can i see the output that is printed by the dbms_out.put_line statement of a trigger? . . .

• 2
• 0
• 1317

Multiple tinyMCE instances, plugins not working properly

Hi, I have multiple tinyMCE instances like  <script src="//cdn.tinymce.com/4/tinymce.min.js"></script> <script type="text/javascript"> tinymce.init({ selector: '#my . . .

• 1
• 0
• 1301

ORA-22062: invalid input string error while trying to insert data from .Net app

My .Net application raises below error message when trying to insert data into an Oracle table : ORA-22062: invalid input string [40,7] at Oracle.DataAccess.Types.OracleDecimal..ctor(String numStr, S . . .

• 0
• 0
• 1285

Error updating Ubuntu - no longer has a Release file.

When running apt-get update I get the below error: $ sudo apt-get update Ign:1 http://europe-west1.gce.archive.ubuntu.com/ubuntu artful InRelease Ign:2 http://europe-west1.gce.archive.ubuntu.com/ub . . .

• 0
• 0
• 1250

How can i find the number of lines of code in a VB.NET solution

Is it possible to find the number of lines of code in a Visual Basic.NET Project? I want to count the lines (excluding comments and line breaks) in all the source files of a visual basic solutio . . .

• 1
• 0
• 1231

Raspberry pi - how to mount Windows shares?

I am trying to mount Windows share files(password protected) on Pi I am using sudo mount -t cifs -o username=yourusername,password=yourpassword //MyPC/share1 /mnt/myfolder This is not working. . . .

• 2
• 1
• 1191

SQL to select rows based on data combinations in a table

I have a table with 3 columns - seq, field and data like below Seq Field Data 1 Continent Asia 1 Country India 1 Capital Delhi 1 Language  Hindi 2 Co . . .

• 1
• 0
• 1163

How to remove a file ending with a dot in windows 10?

I can't delete files that has filenames ending with a dot(.) character in Windows 10. I simply press the delete key and also right click delete. Both gives me the error message file doesn't exist. I . . .

• 0
• 0
• 1161