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Copy values from one column to another in the same table
... set str = '';
WHILE x < 5 DO
set str = (select source_col from emp where id=x);
update emp set target_col =str where id=x;
SET x = x + 1;
END WHILE;
END$$
DELIMITER ;
...
How do I retrieve my MySQL username and password?
...art the MySQL console client with the -u root option.
List all the users;
SELECT * FROM mysql.user;
Reset password;
UPDATE mysql.user SET Password=PASSWORD('[password]') WHERE User='[username]';
But DO NOT FORGET to
Stop the MySQL process
Start the MySQL Process normally (i.e. without the --ski...
Why does Java's hashCode() in String use 31 as a multiplier?
... for 31 since 33 is not a prime:
Of the remaining
four, I'd probably select P(31), as it's the cheapest to calculate on a RISC
machine (because 31 is the difference of two powers of two). P(33) is
similarly cheap to calculate, but it's performance is marginally worse, and
33 is composit...
Margin while printing html page
... wrong even if you use cm or mm. To override this behaviour, the user must select 'Print preview' and then set the print size to 100% (default is Shrink To Fit).
A better option for full control on printed margins is to use the @page directive to set the paper margin, which will affect the margin ...
Android: combining text & image on a Button or ImageButton
...mple drawable for the background. Use a StateListDrawable (usually via <selector> XML file in res/drawable/), so you can define backgrounds for the various states (normal, pressed, focused, disabled, etc.).
– CommonsWare
Oct 7 '09 at 18:11
...
Use JavaScript to place cursor at end of text in text input element
...
There's a simple way to get it working in most browsers.
this.selectionStart = this.selectionEnd = this.value.length;
However, due to the *quirks of a few browsers, a more inclusive answer looks more like this
setTimeout(function(){ that.selectionStart = that.selectionEnd = 10000; },...
How do I implement onchange of with jQuery?
<select> has this API. What about <input> ?
14 Answers
14
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Linking static libraries to other static libraries
...tiple libraries.
Edit: In response to your update, the only way I know to select only the symbols that are required is to manually create the library from the subset of the .o files that contain them. This is difficult, time consuming and error prone. I'm not aware of any tools to help do this (not...
Placeholder Mixin SCSS/CSS
...nnested:
@mixin optional-at-root($sel) {
@at-root #{if(not &, $sel, selector-append(&, $sel))} {
@content;
}
}
@mixin placeholder {
@include optional-at-root('::-webkit-input-placeholder') {
@content;
}
@include optional-at-root(':-moz-placeholder') {
@content;
}
...
How to set HTTP header to UTF-8 using PHP which is valid in W3C validator?
...
mysql_query("SET NAMES utf8"); before my select query fixed the issue for me . thanks :)
– Deepak Goswami
Mar 4 '16 at 5:59
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