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Can someone tell me what is the difference between these two:
ALTER TABLE x1 ADD INDEX(a); ALTER TABLE x1 ADD INDEX(b);
AND
ALTER TABLE x1 ADD INDEX(a,b);
I know this goes down to the very basics but sometimes I find the former seems to be a little faster...
Started by Legend on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
It is possible to retrieve a set of row identifiers using only the... .
With your second option, the following query will not use the index:
SELECT * FROM x1 WHERE b = 'something';
The order in which columns are listed in the index definition is important .
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The command git add [--all|-A] appears to be identical to git add . . Is this correct? If not, how do they differ?
Started by Casey on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
" is that it looks at the working tree and adds all not stage any 'rm....
The important point about " git add .
" git add -A " is equivalent to " git add .; git add -u ".
I edited mine out.
Poster above's answer is best.
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Are there any differences between add to watch and add to quick watch?
Started by mrblah on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Add to watch" adds the variable to the Watch window, so that you can see its value changing as you.
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Ask your Facebook Friends
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I was assuming that both work in the same way. Both add every file onto index. But I seem wrong.
What's the difference between git add . and git add -u ?
Started by TK on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
add all files from the current....
Git add documentaiton
git add .
Will only add those already being tracked.
Will add all files in you current directory, while git add -u .
Like the manual says: git add .
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How can I add a default entry at the top of a JComboBox such as Add New Item in order to allow a user to click this entry and get a dialog allowing them to create a new entry? Should I try to use a custom renderer or what is the best approach? I appreciate...
Started by Derek on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Add an entry at the top of the source populating the combo
2) Add a listener to the combobox?
Also, I've found that its easier to control permissions by having dedicated add/remove buttons.
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Private string[] ColeccionDeCortes(string Path) { DirectoryInfo X = new DirectoryInfo(Path); FileInfo[] listaDeArchivos = X.GetFiles(); string[] Coleccion; foreach (FileInfo FI in listaDeArchivos) { //Add the FI.Name to the Coleccion[] array, } return...
Started by John McClane on
, 6 posts
by 6 people.
Answer Snippets (Read the full thread at stackoverflow):
ListaDeArchivos.Length]; int i = 0; foreach (FileInfo FI in listaDeArchivos) { Coleccion[i++] = FI.Name; //Add the FI.Name to the Coleccion[] array, } return Coleccion; }
You can't add items to an array, since.
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I've been using this long command:
svn st | awk '/\?/ {print $2}' | xargs svn add
Similarly, to svn rm files I accidentally deleted with normal rm with :
svn st | awk '/\!/ {print $2}' | xargs svn rm --force
I guess I can write a bash function to do these...
Answer Snippets (Read the full thread at stackoverflow):
Any decent SVN gui should a file to 'Add' it or to ....
That takes a file path as an argument and prompts the user for add/delete and then does the appropriate a GUI that can show you all the untracked files, then select all and add.
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I have an existing WebForms project to which I'm adding MVC pages. I created an MVC project and copied the project type guids.
It works fine, but I can't get Visual Studio to display the "Add Controller" or "Add View" wizards on my controllers and views...
Started by orip on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Right click on the folder, click on Add - New item, then select "MVC View Page" or "MVC Controller Page.
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I added ASP.NET MVC manually to an existing WebForms application... thanks to this tutorial .
However, now I do not have the menu options (When right-clicking on the Controllers folder or Views folders) to show the Add Controller or Add View dialog boxes...
Started by BigJoe714 on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
He simply right-clicks on the Index method and he gets a cs menu option to create a view, an Add View.
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I have an MVC application which has a set of fields for contact details to be added for a person (Email, Phone, Fax, AIM... etc). Initially I present a dropdown for type of input and and input field for the corresponding data, along with a link to add...
Started by Richbits on
, 4 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
<input name="done_submit" type="submit" value="Submit"/>
On the server, you detect whether....
<input name="add_field_submit" type="submit" value="Add Field"/> ...
Gt; <input name="field1"/> <input name="field2"/> ...
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