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Fast way to discover the row count of a table in PostgreSQL
...of rows due to the nature of MVCC. There is a way to speed this up dramatically if the count does not have to be exact like it seems to be in your case.
Instead of getting the exact count (slow with big tables):
SELECT count(*) AS exact_count FROM myschema.mytable;
You get a close estimate like ...
How to establish a connection pool in JDBC?
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Usually if you need a connection pool you are writing an application that runs in some managed environment, that is you are running inside an application server. If this is the case be sure to check what connection pooling facil...
How do I set the maximum line length in PyCharm?
...hy the default value is set to 120 characters. PEP 8 clearly states: Limit all lines to a maximum of 79 characters.
– Krøllebølle
Nov 12 '14 at 8:20
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Split string using a newline delimiter with Python
... # ['a,b,c', 'd,e,f', 'g,h,i', 'j,k,l']
str.split, by default, splits by all the whitespace characters. If the actual string has any other whitespace characters, you might want to use
print(data.split("\n")) # ['a,b,c', 'd,e,f', 'g,h,i', 'j,k,l']
Or as @Ashwini Chaudhary suggested in the comm...
PostgreSQL wildcard LIKE for any of a list of words
... According to dba.stackexchange.com/a/10696/27757 SIMILAR TO is internally translated to a regex search
– Mark K Cowan
Sep 16 '16 at 10:17
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Animate scroll to ID on page load
...into view on page load, but had two issues: a) using "html,body" gave two callbacks (one for each matched element). b) It depends on browser which of body or html works. So I made a gist which you can adapt to use in your project to ensure scroll-into-view works on "any" browser and that you will on...
Optimising Android application before release [closed]
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Thanks! I really like answers with resources. :-)
– Wroclai
Apr 11 '11 at 20:21
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How can I add a third button to an Android Alert Dialog?
...that the Alert Dialog can have one, two or three buttons, but the SDK only allows for a positive and negative button. How then can I add a third button?
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fetch from origin with deleted remote branches?
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thank you very much. I manually deleted those branches before.
– Maksim Dmitriev
Mar 9 '13 at 13:16
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How to change checkbox's border style in CSS?
...ents that browsers tend not to let you style that much, and that people usually try to replace with javascript so they can style/code something to look and act like a checkbox.
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