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Fast way to discover the row count of a table in PostgreSQL
...sts in a given schema
TABLESAMPLE SYSTEM (n) in Postgres 9.5+
SELECT 100 * count(*) AS estimate FROM mytable TABLESAMPLE SYSTEM (1);
Like @a_horse commented, the newly added clause for the SELECT command might be useful if statistics in pg_class are not current enough for some reason. For exa...
Why '&&' and not '&'?
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answered Sep 7 '11 at 9:40
Daniel HilgarthDaniel Hilgarth
156k3535 gold badges285285 silver badges397397 bronze badges
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Unzip All Files In A Directory
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edited Sep 28 '18 at 9:50
Simon Baars
1,3041414 silver badges2828 bronze badges
answered Mar 3 '10 at ...
Set selected item of spinner programmatically
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300
Thanks, this worked great, while I was doing this I also found a way of getting the index without needing to loop through the adapter. I us...
Error message “Forbidden You don't have permission to access / on this server” [closed]
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Update October 2016
4 years ago, since this answer is used as a reference by many, and while I learned a lot from security perspective during these years,
I feel I am responsible to clarify some important notes, and I've update my answer ac...
How many levels of pointers can we have?
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403
The C standard specifies the lower limit:
5.2.4.1 Translation limits
276 The implement...
On select change, get data attribute value
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edited May 29 '13 at 0:12
answered Dec 1 '11 at 17:32
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Converting a Java Keystore into PEM Format
...ash$ keytool -keystore foo.jks -exportcert -alias foo | \
openssl x509 -inform der -text
Enter keystore password: asdasd
Certificate:
Data:
Version: 3 (0x2)
Serial Number: 1237334757 (0x49c03ae5)
Signature Algorithm: dsaWithSHA1
Issuer: C=AU, ST=Victoria, ...
App store link for “rate/review this app”
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+50
For versions lower than iOS 7 use the old one:
itms-apps://itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?type=Pu...
How to clean project cache in Intellij idea like Eclipse's clean?
...s folder depends on your OS and version installed.
Windows Vista, 7, 8, 10
<SYSTEM DRIVE>\Users\<USER ACCOUNT NAME>\.<PRODUCT><VERSION>
Linux/Unix
~/.<PRODUCT><VERSION>
Mac OS
~/Library/Caches/<PRODUCT><VERSION>
Read this for more details on cache...