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Find the host name and port using PSQL commands
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SELECT *
FROM pg_settings
WHERE name = 'port';
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Vim: How to change the highlight color for search hits and quickfix selection
... background for highlighting search hits. The same pattern is used for the selected entry in the quickfix window.
3 Answers...
Is there XNOR (Logical biconditional) operator in C#?
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In C, ! operator can be used to convert int's to "well-behaved" booleans: !a==!b.
– ivan_pozdeev
Sep 11 '14 at 14:02
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Export query result to .csv file in SQL Server 2008
...opy the query.
In Object Explorer right-click on the database in question.
Select "Tasks" >> "Export Data..."
Configure your datasource, and click "Next".
Choose "Flat File" or "Microsoft Excel" as destination.
Specify a file path.
If working with a flat file, configure as desired. If working ...
What are the uses for Cross Join?
...ly, like size and color information for a particular article of clothing:
select
size,
color
from
sizes CROSS JOIN colors
Maybe you want a table that contains a row for every minute in the day, and you want to use it to verify that a procedure has executed each minute, so you might c...
How can I change the file type association of an existing file in WebStorm?
...t patterns by which a file gets associated as some type or other.
If you select the patterns for a file type you have wrongly selected (in your case Text type) you can remove the filename pattern with which was created to associate you file's filename as a wrong type.
Then click Apply > OK
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MySQL/SQL: Group by date only on a Datetime column
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Cast the datetime to a date, then GROUP BY using this syntax:
SELECT SUM(foo), DATE(mydate) FROM a_table GROUP BY DATE(a_table.mydate);
Or you can GROUP BY the alias as @orlandu63 suggested:
SELECT SUM(foo), DATE(mydate) DateOnly FROM a_table GROUP BY DateOnly;
Though I don't think...
Best way to test if a generic type is a string? (C#)
...de enumeration. Call the GetTypeCode method on classes that implement the IConvertible interface to obtain the type code for an instance of that class. IConvertible is implemented by Boolean, SByte, Byte, Int16, UInt16, Int32, UInt32, Int64, UInt64, Single, Double, Decimal, DateTime, Char, and Strin...
How can I custom-format the Autocomplete plug-in results?
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//grab user input from the search box
var val = $('#s').val()
//convert
re = new RegExp(val, "ig")
//match with the converted value
matchNew = text1.match(re);
//Find the reg expression, replace it with blue coloring/
text = text1.replace(matchNew, ("<span style='font-weight:bol...
Random row selection in Pandas dataframe
Is there a way to select random rows from a DataFrame in Pandas.
6 Answers
6
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