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SQL to find the number of distinct values in a column
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You can use the DISTINCT keyword within the COUNT aggregate function:
SELECT COUNT(DISTINCT col...
python: SyntaxError: EOL while scanning string literal
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234
You are not putting a " before the end of the line.
Use """ if you want to do this:
""" a ver...
Best/Most Comprehensive API for Stocks/Financial Data [closed]
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answered Jan 6 '09 at 17:40
Giovanni GalboGiovanni Galbo
12.3k1111 gold badges5454 silver badges7575 bronze badges
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What is a CSRF token ? What is its importance and how does it work?
... include on their page a request like http://www.mybank.com/transfer?to=123456;amount=10000 (where 123456 is the number of their Cayman Islands account and 10000 is an amount that you previously thought you were glad to possess).
You retrieved that www.cute-cat-pictures.org page, so your browser wil...
Where are the PostgreSQL logs on macOS?
...nstallation of PostgreSQL, your log files will be in /Library/PostgreSQL/8.4/data/pg_log
Of course, you'll want to substitute 8.4 for whichever version number you're running.
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How to iterate object in JavaScript? [duplicate]
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143
You can do it with the below code. You first get the data array using dictionary.data and assig...
How to design a multi-user ajax web application to be concurrently safe
...can not be less) than 123 the new value is accepted, a new version id of 124 generated.
The new state-information "updated to version 124" and optionally new value foo are put at the beginning of the artifact x's ringbuffer (changelog/history)
serverside mutex is released
requesting artifact committ...
How to disable breadcrumbs in Eclipse
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If you are referring to the breadcrumbs in the help file of a RCP application, there is only ...
Python function as a function argument?
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Can a Python function be an argument
of another function?
Yes.
def myfunc(anotherfunc, ...
C# Xml中SelectSingleNode方法中的xpath用法（Xml节点操作最佳方式） - 更...
...例如：
objNodeList = objDoc.SelectNodes("Company//Employee")
2.4 查询属性（attribute）节点
以上的各种方法都返回元素（element)节点（集），返回属性（attribute），只需要采用相应的方法，在属性名前加一个@符号即可，例如：
objN...