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postgresql: INSERT INTO … (SELECT * …)
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As Henrik wrote you can use dblink to connect remote database and fetch result. For example:
psql dbtest
CREATE TABLE tblB (id serial, time integer);
INSERT INTO tblB (time) VALUES (5000), (2000);
psql postgres
CREATE TABLE tblA (i...
How to pass all arguments passed to my bash script to a function of mine? [duplicate]
...sparsing of arguments containing spaces or wildcards (see below). This works for multiple arguments. It is also portable to all POSIX-compliant shells.
It is also worth nothing that $0 (generally the script's name or path) is not in $@.
The Bash Reference Manual Special Parameters Section says that...
How do I write outputs to the Log in Android?
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Look into android.util.Log. It lets you write to the log with various log levels, and you can specify different tags to group the output.
For example
Log.w("myApp", "no network");
will output a warning with the tag myApp a...
Does java have a int.tryparse that doesn't throw an exception for bad data? [duplicate]
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No. You have to make your own like this:
boolean tryParseInt(String value) {
try {
Integer.parseInt(value);
return true;
} catch (NumberFormatException e) {
return false;
}
}
...an...
Changing image size in Markdown
I just got started with Markdown. I love it, but there is one thing bugging me: How can I change the size of an image using Markdown?
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Import a file from a subdirectory?
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Take a look at the Packages documentation (Section 6.4) here: http://docs.python.org/tutorial/modules.html
In short, you need to put a blank file named
__init__.py
in the "lib" directory.
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XPath OR operator for different nodes
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All title nodes with zipcode or book node as parent:
Version 1:
//title[parent::zipcode|parent::book]
Version 2:
//bookstore/book/title|//bookstore/city/zipcode/title
share
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What does flushing the buffer mean?
...fer written to the file. By postponing the writes, and writing a large block in one go, performance is improved.
With this in mind, flushing the buffer is the act of transferring the data from the buffer to the file.
Does this clear the buffer by deleting everything in it or does it clear the b...
Can I zip more than two lists together in Scala?
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codebox
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answered Nov 3 '09 at 1:16
copumpkincopumpkin
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How to find duplicates in 2 columns not 1
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You should set up a composite key between the two fields. This will require a unique stone_id and upcharge_title for each row.
As far as finding the existing duplicates try this:
select stone_id,
upcharge_title,
count(*)
from yo...