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Is String.Format as efficient as StringBuilder
...id some benchmarking:
http://jdixon.dotnetdevelopersjournal.com/string_concatenation_stringbuilder_and_stringformat.htm
Updated:
Sadly the link above has since died. However there's still a copy on the Way Back Machine:
http://web.archive.org/web/20090417100252/http://jdixon.dotnetdevelop...
How to change the default charset of a MySQL table?
...atabase, you can use this query and execute the resulted queries : SELECT concat('alter table ', table_name, ' CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci;') FROM information_schema.tables WHERE table_schema='<your_database_name>' and table_collation != 'utf8_general_ci' GROUP BY ...
FIND_IN_SET() vs IN()
...ted companies name, not based on particular Id.
SELECT
(SELECT GROUP_CONCAT(cmp.cmpny_name)
FROM company cmp
WHERE FIND_IN_SET(cmp.CompanyID, odr.attachedCompanyIDs)
) AS COMPANIES
FROM orders odr
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gulp.run is deprecated. How do I compose tasks?
...ly if needed or from within a watch.
var
gulp = require('gulp'),
concat = require('gulp-concat'),
markdown = require('gulp-showdown')
;
var scriptFiles = [ 'ang/app.js' ];
var markdownFiles = [ 'content/articles/*.md'];
var watchTask = function()
{
buildTask();
gulp.watch(scri...
How to declare a variable in MySQL?
...
For any person using @variable in concat_ws function to get concatenated values, don't forget to reinitialize it with empty value. Otherwise it can use old value for same session.
Set @Ids = '';
select
@Ids := concat_ws(',',@Ids,tbl.Id),
tbl.Col1,
.....
Can you create nested WITH clauses for Common Table Expressions?
...paths AS (
SELECT
EmployeeID,
CONVERT(VARCHAR(900), CONCAT('.', EmployeeID, '.')) AS FullPath
FROM EmployeeHierarchyWide
WHERE ManagerID IS NULL
UNION ALL
SELECT
ehw.EmployeeID,
CONVERT(VARCHAR(900), CONCAT(p.FullPath, ehw.EmployeeID, '.')...
add column to mysql table if it does not exist
...me_IN, field_name_IN);
IF (@isFieldThere = 0) THEN
SET @ddl = CONCAT('ALTER TABLE ', table_name_IN);
SET @ddl = CONCAT(@ddl, ' ', 'ADD COLUMN') ;
SET @ddl = CONCAT(@ddl, ' ', field_name_IN);
SET @ddl = CONCAT(@ddl, ' ', field_definition_IN);
PREPARE stmt...
Given a DateTime object, how do I get an ISO 8601 date in string format?
...30:00
UtcNow obviously returns a UTC time so there is no harm in:
string.Concat(DateTime.UtcNow.ToString("s"), "Z")
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How to concatenate strings of a string field in a PostgreSQL 'group by' query?
I am looking for a way to concatenate the strings of a field within a group by query. So for example, I have a table:
14 An...
What does “Splats” mean in the CoffeeScript tutorial?
...args, as it allows you to treat function parameters as list
for example:
concat = (args...) -> args.join(', ')
concat('hello', 'world') == 'hello, world'
concat('ready', 'set', 'go!') == 'ready, set, go!'
it works in assginments, too:
[first, rest...] = [1, 2, 3, 4]
first == 1
rest == [2, 3,...