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sqlite alter table add MULTIPLE columns in a single statement
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316
No, you have to add them one at a time. See the syntax diagram at the top of SQLite's ALTER TAB...
Get time difference between two dates in seconds
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291
The Code
var startDate = new Date();
// Do your operations
var endDate = new Date();
var secon...
How to get random value out of an array?
I have an array called $ran = array(1,2,3,4);
20 Answers
20
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don't fail jenkins build if execute shell fails
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14 Answers
14
Active
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How can the Euclidean distance be calculated with NumPy?
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931
Use numpy.linalg.norm:
dist = numpy.linalg.norm(a-b)
You can find the theory behind this in I...
Resolving a 'both added' merge conflict in git?
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141
If you use git rm git will remove all versions of that path from the index so your resolve act...
C# 'is' operator performance
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114
Using is can hurt performance if, once you check the type, you cast to that type. is actually...
How to remove .htaccess password protection from a subdirectory
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154
You need to create a new .htaccess file in the required directory and include the Satisfy any ...
MySQL Multiple Joins in one query?
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216
You can simply add another join like this:
SELECT dashboard_data.headline, dashboard_data.mess...
How to check if a database exists in SQL Server?
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165
From a Microsoft's script:
DECLARE @dbname nvarchar(128)
SET @dbname = N'Senna'
IF (EXISTS (...