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What does it mean when MySQL is in the state “Sending data”?

... This is quite a misleading status. It should be called "reading and filtering data". This means that MySQL has some data stored on the disk (or in memory) which is yet to be read and sent over. It may be the table itself, an index, a temporary table, a sorted output etc. If you have a 1...
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Query a parameter (postgresql.conf setting) like “max_connections”

Does anyone know if it's even possible (and how, if yes) to query a database server setting in PostgreSQL (9.1)? 1 Answer ...
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setup cron tab to specific time of during weekdays

...server. We want the cron job to run the script at certain times of the day and on some specific days of the week. For example, we want to setup a cron job that runs the script with the following sequence: ...
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See what has been installed via MacPorts

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Difference between 'self' and 'total' in Chrome CPU Profile of JS

What is the difference between the 'self' and 'total' columns in the Chrome CPU profiling of JS code? 2 Answers ...
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Javadoc: package.html or package-info.java

... package-info.java: "This file is new in JDK 5.0, and is preferred over package.html."—javadoc - The Java API Documentation Generator Addendum: The big difference seems to be package annotations. There's a little more in the way of rationale in 7.4 Package Declarations. ...
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Scope of sessionStorage and localStorage

I read some documentation on sessionStorage and localStorage, but I don't understand what the scope is: the domain, a specific page? ...
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What is the difference between origin and upstream on GitHub?

What is the difference between origin and upstream on GitHub ? 1 Answer 1 ...
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Access “this” from Java anonymous class

... I didn't know even this keywords could be differentiated just as methods and attributes can. +1 – logo_writer Jun 6 '16 at 6:50 ...
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How do I decode a base64 encoded string?

... and dont forget to add namespace 'using System.Text' – Eklavyaa Dec 31 '18 at 11:10 add a comment ...