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Ignoring time zones altogether in Rails and PostgreSQL
...alue representing the count of microseconds from the Postgres epoch, 2000-01-01 00:00:00 UTC.
Postgres also has built-in knowledge of the commonly used UNIX time counting seconds from the UNIX epoch, 1970-01-01 00:00:00 UTC, and uses that in functions to_timestamp(double precision) or EXTRACT(EPOCH ...
Is there a “null coalescing” operator in JavaScript?
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13 Answers
13
Active
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Mapping enum to string in hibernate
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182
Yes, is possible. It should be:
@Enumerated(EnumType.STRING)
@Column(name = "category_type")
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Adding command line options to CMake
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162
Yeah, you should use the option command. You can set options from the command line this way:
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How do I update zsh to the latest version?
...inal.app on my OS X machine successfully. The version number of zsh is 4.3.11.
6 Answers
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List of special characters for SQL LIKE clause
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For SQL Server, from http://msdn.microsoft.com/en-us/library/ms179859.aspx :
% Any string of zero or more characters.
WHERE title LIKE '%computer%' finds all book titles with the word 'computer' anywhere in the book title.
_ Any single character.
WHERE au_fname LIKE '_ean' finds all ...
How to check for Is not Null And Is not Empty string in SQL server?
...s UNKNOWN for these rather than TRUE.
CREATE TABLE T
(
C VARCHAR(10)
);
INSERT INTO T
VALUES ('A'),
(''),
(' '),
(NULL);
SELECT *
FROM T
WHERE C <> ''
Returns just the single row A. I.e. The rows with NULL or an empty strin...
How to check if a table exists in a given schema
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answered Jun 6 '14 at 19:58
Erwin BrandstetterErwin Brandstetter
439k9696 gold badges809809 silver badges969969 bronze badges
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how to know if the request is ajax in asp.net mvc?
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edited Aug 29 '11 at 15:52
answered Oct 5 '10 at 13:45
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