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Unique constraint on multiple columns
...finition would be:
CREATE TABLE [dbo].[user](
[userID] [int] IDENTITY(1,1) NOT NULL,
[fcode] [int] NULL,
[scode] [int] NULL,
[dcode] [int] NULL,
[name] [nvarchar](50) NULL,
[address] [nvarchar](50) NULL,
CONSTRAINT [PK_user_1] PRIMARY KEY CLUSTERED
(
[userID...
How do I check in JavaScript if a value exists at a certain array index?
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18 Answers
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Active
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Fit background image to div
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edited May 23 '17 at 12:02
Community♦
111 silver badge
answered Nov 20 '11 at 8:14
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mongodb count num of distinct values per field/key
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199
MongoDB has a distinct command which returns an array of distinct values for a field; you can ...
Split a string on whitespace in Go?
Given an input string such as " word1 word2 word3 word4 " , what would be the best approach to split this as an array of strings in Go? Note that there can be any number of spaces or unicode-spacing characters between each word.
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Django select only rows with duplicate field values
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193
Try:
from django.db.models import Count
Literal.objects.values('name')
.annota...
Rails migrations: Undo default setting for a column
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edited Nov 7 '18 at 23:48
Joshua Pinter
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How to check file input size with jQuery?
...a part of the HTML5 specification, it will only work for modern browsers (v10 required for IE) and I added here more details and links about other file information you should know: http://felipe.sabino.me/javascript/2012/01/30/javascipt-checking-the-file-size/
Old browsers support
Be aware that ...
RegEx: Smallest possible match or nongreedy match
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192
For a regular expression like .* or .+, append a question mark (.*? or .+?) to match as few ch...