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Oracle Differences between NVL and Coalesce
...AS val
FROM dual
CONNECT BY
level <= 10000
)
This runs for almost 0.5 seconds, since it generates SYS_GUID()'s, despite 1 being not a NULL.
SELECT SUM(val)
FROM (
SELECT COALESCE(1, LENGTH(RAWTOHEX(SYS_GUID()))) AS val
FROM dua...
Counting DISTINCT over multiple columns
... this approach and in a particular case the checksum ended up with a count 10% smaller. If you think of it a bit longer, Checksum just returns an int, so if you'd checksum a full bigint range you'll end up with a distinct count about 2 billion times smaller than there actually is. -1
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Enable remote connections for SQL Server Express 2012
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10
Just wanted to say thanks and upvote. You saved me a lot of time. Do you mind updating your post with the correct connect syntax? I need to...
Is there an S3 policy for limiting access to only see/access one bucket?
...).
The following IAM policy is working for me now:
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"s3:ListBucket",
"s3:GetBucketLocation",
"s3:ListBucketMultipartUploads"
],
"Resource": "arn:aws:s3:::itnighq",
...
Mapping over values in a python dictionary
...ict! :)
– Tarrasch
Aug 24 '14 at 17:10
2
zip(d.keys(), d.values()) works for more versions instea...
How to pass command line arguments to a shell alias? [duplicate]
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answered Jun 2 '09 at 19:10
Charlie MartinCharlie Martin
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What does the red exclamation point icon in Eclipse mean?
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10 Answers
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Detach many subdirectories into a new, separate Git repository
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10 Answers
10
Active
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Which characters are valid/invalid in a JSON key name?
...anaArun Rana
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5
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Order discrete x scale by frequency/value
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106
Try manually setting the levels of the factor on the x-axis. For example:
library(ggplot2)
#...