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Repair all tables in one go
...`TABLE_SCHEMA`=DATABASE();
DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET endloop=1;
OPEN rCursor;
FETCH rCursor INTO tableName;
WHILE endloop = 0 DO
SET @sql = CONCAT("REPAIR TABLE `", tableName, "`");
PREPARE statement FROM @sql;
EXECUTE statement;
FETCH rCursor INTO ...
Fixed point vs Floating point number
...y 100 to get 1234. When performing math on this number, we'd use this rule set. Adding 5620 or 56.20 to this number would yield 6854 in data or 68.54.
If we want to calculate the decimal part of a fixed-point number, we use the modulo (%) operand.
12.34 (pseudocode):
v1 = 1234 / 100 // get the wh...
PHP编译安装时常见错误解决办法，php编译常见错误 - 更多技术 - 清泛网 - ...
...如下:
yum -y install libXpm-devel
checking for bind_textdomain_codeset in -lc… yes checking for GNU MP support… yes configure: error: Unable to locate gmp.h
代码如下:
yum -y install gmp-devel
checking for utf8_mime2text signature… new checking for U8T_DECOMPOSE… configure: err...
Android app in Eclipse: Edit text not showing on Graphical layout
...wn with the green android in the layout preview's toolbar. You may want to set it explicitly and not allow the IDE to choose the Android version automatically.
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What are the best practices for JavaScript error handling?
...
An immensely interesting set of slides on Enterprise JavaScript Error Handling can be found at http://www.devhands.com/2008/10/javascript-error-handling-and-general-best-practices/
In short it summarizes:
Assume your code will fail
Log errors to t...
JavaScript: What are .extend and .prototype used for?
...t back to its own one.
And the usage example:
var Car = Class.Extend({
setColor: function(clr){
color = clr;
}
});
var volvo = Car.Extend({
getColor: function () {
return color;
}
});
Read more about it here at Javascript Inheritance by John Resig 's post.
...
Make a link open a new window (not tab) [duplicate]
...ute dates back to the times when browsers did not have tabs and using framesets was state of the art. In the meantime, the functionality of this attribute has slightly changed (see MDN Docu)
[2] There are some other values which do not make much sense anymore (because they were designed with frames...
What is the difference between declarative and imperative programming? [closed]
... isn't indexed, in which case it will have to iterate over the entire data set anyway. Or maybe the SQL engine knows that this is the perfect time to utilize all 8 cores for a speedy parallel search. You, as a programmer, aren't concerned with any of those conditions, and you don't have to write ...
Naming convention - underscore in C++ and C# variables
...vate string _name;
public string Name
{
get { return this._name; }
set { this._name = value; }
}
After:
public string Name { get; set; }
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DateTime2 vs DateTime in SQL Server
...s their recommendation:
Use the time, date, datetime2 and
datetimeoffset data types for new
work. These types align with the SQL
Standard. They are more portable.
time, datetime2 and datetimeoffset
provide more seconds precision.
datetimeoffset provides time zone
support for global...