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How much size “Null” value takes in SQL Server

I have a large table with say 10 columns. 4 of them remains null most of the times. I have a query that does null value takes any size or no size in bytes. I read few articles some of them are saying : ...
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Is there any difference between __DIR__ and dirname(__FILE__) in PHP?

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Get PostGIS version

How can I find out which version of PostGIS I have? 5 Answers 5 ...
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PHP CURL CURLOPT_SSL_VERIFYPEER ignored

For some reason I am unable to use CURL with HTTPS. Everything was working fine untill I ran upgrade of curl libraries. Now I am experiencing this response when trying to perform CURL requests: Problem with the SSL CA cert (path? access rights?) ...
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convert streamed buffers to utf8-string

...o make a HTTP-request using node.js to load some text from a webserver. Since the response can contain much text (some Megabytes) I want to process each text chunk separately. I can achieve this using the following code: ...
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delete_all vs destroy_all?

I am looking for the best approach to delete records from a table. For instance, I have a user whose user ID is across many tables. I want to delete this user and every record that has his ID in all tables. ...
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src/lxml/etree_defs.h:9:31: fatal error: libxml/xmlversion.h: No such file or directory

while comming to install "lxml" packages i am getting the following eror 5 Answers 5 ...
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How to get thread id from a thread pool?

...e a fixed thread pool that I submit tasks to (limited to 5 threads). How can I find out which one of those 5 threads executes my task (something like "thread #3 of 5 is doing this task")? ...
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Replace first occurrence of string in Python

I have some sample string. How can I replace first occurrence of this string in a longer string with empty string? 2 Answer...
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Python argparse: default value or specified value

... that will default to a value if only the flag is present with no value specified, but store a user-specified value instead of the default if the user specifies a value. Is there already an action available for this? ...