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How do I change the data type for a column in MySQL?
... datatype of given column
Depending on how many columns you wish to modify it might be best to generate a script, or use some kind of mysql client GUI
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How do I find out if first character of a string is a number?
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Character.isDigit(string.charAt(0))
Note that this will allow any Unicode digit, not just 0-9. You might prefer:
char c = string.charAt(0);
isDigit = (c >= '0' && c <= '9');
Or the slower regex solutions:
s.substring(0, ...
Can an array be top-level JSON-text?
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edited Apr 5 '16 at 8:41
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select into in mysql
I am a MSSQL user and now I am converting my database to MySQL. I am writing the following query in MySQL:
2 Answers
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How to check for changes on remote (origin) Git repository?
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You could git fetch origin to update the remote branch in your repository to point to the latest version. For a diff against the remote:
git diff origin/master
Yes, you can use caret notation as well.
If you want to accept the remot...
When should the xlsm or xlsb formats be used?
Since Excel 2007, Microsoft has split the classical .xls format to several formats (in particular, .xlsx , .xlsm , .xlsb ). I've got no problem to understand the use and purpose of .xlsx format but I am still wondering whether we should use a .xlsm or a .xlsb format when creating a file c...
Select all child elements recursively in CSS
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Use a white space to match all descendants of an element:
div.dropdown * {
color: red;
}
x y matches every element y that is inside x, however deeply nested it may be - children, grandchildren and so on.
The asterisk * matche...
How to SSH to a VirtualBox guest externally through a host? [closed]
I have a Ubuntu VM running on my Windows 7 machine. How do I set it up so that I can access the webserver externally through SSH?
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Unzip All Files In A Directory
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edited Sep 28 '18 at 9:50
Simon Baars
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How can I display just a portion of an image in HTML/CSS?
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One way to do it is to set the image you want to display as a background in a container (td, div, span etc) and then adjust background-position to get the sprite you want.
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