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COUNT DISTINCT with CONDITIONS
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261
You can try this:
select
count(distinct tag) as tag_count,
count(distinct (case when entr...
Architecture for merging multiple user accounts together
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120
+100
I am fa...
How to split a string, but also keep the delimiters?
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23 Answers
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How to find out the number of CPUs using python
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12 Answers
12
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How does SSL really work?
...the server to the client.
Authenticate the client to the server.
#1 and #2 are very common. #3 is less common. You seem to be focusing on #2, so I'll explain that part.
Authentication
A server authenticates itself to a client using a certificate. A certificate is a blob of data[1] that contains ...
Rails params explained?
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282
The params come from the user's browser when they request the page. For an HTTP GET request, ...
How to change column order in a table using sql query in sql server 2005?
How to change column order in a table using SQL query in SQL Server 2005?
21 Answers
2...
Determine when a ViewPager changes pages
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289
Use the ViewPager.onPageChangeListener:
viewPager.addOnPageChangeListener(new OnPageChangeLis...
Replace all non-alphanumeric characters in a string
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answered Oct 20 '12 at 5:11
nneonneonneonneo
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What's the recommended way to connect to MySQL from Go?
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2 Answers
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