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How to DROP multiple columns with a single ALTER TABLE statement in SQL Server?
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create table test (a int, b int , c int, d int);
alter table test drop column b, d;
Be aware that DROP COLUMN does not physically remove the data, and for fixed length types (int, numeric, float, datetime, uniqueidentifier etc) the spac...
What is the JUnit XML format specification that Hudson supports?
...n as continuous integration server and I want to use option 'Publish JUnit test result report'. But I don't use xUnit tools for testing, instead of that i have shell scripts which run tests and return results in simple format. I am thinking to make a script which transforms these results to the JUni...
Sending JWT token in the headers with Postman
I'm testing an implementation of JWT Token based security based off the following article . I have successfully received a token from the test server. I can't figure out how to have the Chrome POSTMAN REST Client program send the token in the header.
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Bulk insert with SQLAlchemy ORM
...ree of ORM-based automation.
The example below illustrates time-based tests for several different
methods of inserting rows, going from the most automated to the least.
With cPython 2.7, runtimes observed:
classics-MacBook-Pro:sqlalchemy classic$ python test.py
SQLAlchemy ORM: Total time f...
pandas DataFrame: replace nan values with average of columns
... perspective it is wrong to first replace NA and then split into train and test... You MUST first split into train and test, then replace NA by mean on train and then apply this stateful preprocessing model to test, see the answer involving sklearn below!
– Fabian Werner
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How to convert PascalCase to pascal_case?
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Try this on for size:
$tests = array(
'simpleTest' => 'simple_test',
'easy' => 'easy',
'HTML' => 'html',
'simpleXML' => 'simple_xml',
'PDFLoad' => 'pdf_load',
'startMIDDLELast' => 'start_middle_last',
'AString' =>...
How to use System.Net.HttpClient to post a complex type?
... code (from dunston) becomes:
Widget widget = new Widget()
widget.Name = "test"
widget.Price = 1;
HttpClient client = new HttpClient();
client.BaseAddress = new Uri("http://localhost:44268");
client.PostAsJsonAsync("api/test", widget)
.ContinueWith((postTask) => postTask.Result.EnsureSucces...
Can I have H2 autocreate a schema in an in-memory database?
...could run a script, or just a statement or two:
String url = "jdbc:h2:mem:test;" +
"INIT=CREATE SCHEMA IF NOT EXISTS TEST"
String url = "jdbc:h2:mem:test;" +
"INIT=CREATE SCHEMA IF NOT EXISTS TEST\\;" +
"SET SCHEMA TEST";
String url = "jdbc:h2:mem;" + ...
Copy values from one column to another in the same table
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Short answer for the code in question is:
UPDATE `table` SET test=number
Here table is the table name and it's surrounded by grave accent (aka back-ticks `) as this is MySQL convention to escape keywords (and TABLE is a keyword in that case).
BEWARE, that this is pretty dangerous qu...
How do I remove the last comma from a string using PHP?
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You can use substr function to remove this.
$t_string = "'test1', 'test2', 'test3',";
echo substr($t_string, 0, -1);
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