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How to rethrow the same exception in SQL Server
...
You can't: only the engine can throw errors less than 50000. All you can do is throw an exception that looks like it...
See my answer here please
The questioner here used client side transactions to do what he wanted which I think is a wee bit silly...
...
How to get ALL child controls of a Windows Forms form of a specific type (Button/Textbox)?
...ls.SelectMany(ctrl => GetAll(ctrl,type))
.Concat(controls)
.Where(c => c.GetType() == type);
}
To test it in the form load event I wanted a count of all controls inside the initial GroupBox
private void Form1_Load(object sender, Ev...
SASS - use variables across multiple files
...S Task
var gulp = require('gulp');
var sass = require('gulp-sass');
//var concat = require('gulp-concat');
var uglifycss = require('gulp-uglifycss');
var sourcemaps = require('gulp-sourcemaps');
gulp.task('styles', function(){
return gulp
.src('sass/**/*.scss')
.pipe(so...
JavaScript curry: what are the practical applications?
...guments);
return function() {
return __method.apply(this, args.concat([].slice.apply(null, arguments)));
}
}
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How should I store GUID in MySQL tables?
... SET $Data = REPLACE($Data,'-','');
SET $Result =
CONCAT( UNHEX(SUBSTRING($Data,7,2)), UNHEX(SUBSTRING($Data,5,2)),
UNHEX(SUBSTRING($Data,3,2)), UNHEX(SUBSTRING($Data,1,2)),
UNHEX(SUBSTRING($Data,11,2)),UNHEX(SUBSTRING($Data,9,2)),
...
How to copy a row and insert in same table with a autoincrement field in MySQL?
...xt)
SQL SECURITY INVOKER
BEGIN
SELECT IF(TRIM(_omitColumns) <> '', CONCAT('id', ',', TRIM(_omitColumns)), 'id') INTO @omitColumns;
SELECT GROUP_CONCAT(COLUMN_NAME) FROM information_schema.columns
WHERE table_schema = _schemaName AND table_name = _tableName AND FIND_IN_SET(COLUMN_NAME,@...
Postfix发信的频率控制几个参数 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...可投递时，返回给发件人不可投递报告的大小，缺省值为50000 bytes。
2． 限制内存中对象的数目
qmgr_message_recipient_limit：设置内存中收件人地址的最大数目。缺省值为10000。
qmgr_message_active_limit：设置active邮件队列中邮件数目的...
MySQL stored procedure vs function, which would I use when?
...TE FUNCTION hello (s CHAR(20))
RETURNS CHAR(50) DETERMINISTIC
RETURN CONCAT('Hello, ',s,'!');
Query OK, 0 rows affected (0.00 sec)
CREATE TABLE names (id int, name varchar(20));
INSERT INTO names VALUES (1, 'Bob');
INSERT INTO names VALUES (2, 'John');
INSERT INTO names VALUES (3, 'Paul');
S...
Generating a random & unique 8 character string using MySQL
...umber plate
SELECT @lid:=LAST_INSERT_ID();
UPDATE vehicles SET numberplate=concat(
substring('ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789', rand(@seed:=round(rand(@lid)*4294967296))*36+1, 1),
substring('ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789', rand(@seed:=round(rand(@seed)*4294967296))*36+1, 1),
substr...
Is it possible to view RabbitMQ message contents directly from the command line?
...body looking like:
{"count":5,"requeue":true,"encoding":"auto","truncate":50000}
count controls the maximum number of messages to get. You may get fewer messages than this if the queue cannot immediately provide them.
requeue determines whether the messages will be removed from the queue. If req...