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Export specific rows from a PostgreSQL table as INSERT SQL script
...ant to export and then use the command line utility pg_dump to export to a file:
create table export_table as
select id, name, city
from nyummy.cimory
where city = 'tokyo'
$ pg_dump --table=export_table --data-only --column-inserts my_database > data.sql
--column-inserts will dump as insert...
How to safely open/close files in python 2.4
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See docs.python.org:
When you’re done with a file, call f.close() to close it and free up any system resources taken up by the open file. After calling f.close(), attempts to use the file object will automatically fail.
Hence use close() elegantly with try/finally:
f...
Cannot set property 'innerHTML' of null
... code written inside the script tags (present in head section of your HTML file) gets executed by the browser rendering engine even before your whole DOM (various HTML element tags present within body tag) is loaded. The scripts present in head tag are trying to access an element having id hello ev...
How to execute a raw update sql with dynamic binding in rails
...end
If you don't have a model for it (just the table), you can create a file and model that will inherit from ActiveRecord::Base
class YourTable < ActiveRecord::Base
self.table_name = 'your_table' # specify explicitly if needed
end
and again use where the same as above:
...
What is Robocopy's “restartable” option?
robocopy /Z = "copy files in restartable mode".
1 Answer
1
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Laravel Eloquent ORM Transactions
...out: 1. You need to add "use DB;" to do this e.g. at the top of your model file 2. Unlike JS, you don't get access to local variables in the parent scope unless you explicitly pass them in, you need to add the "use" construct thusly... DB::transaction(function() use ($user) { ...stuffs referencing $...
How to merge two files line by line in Bash
I have two text files, each of them contains an information by line such like that
4 Answers
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What is an uber jar?
...that contains both your package and all its dependencies in one single JAR file. The name can be thought to come from the same stable as ultrageek, superman, hyperspace, and metadata, which all have similar meanings of "beyond the normal".
The advantage is that you can distribute your uber-jar and ...
How to configure an app to run correctly on a machine with a high DPI setting (e.g. 150%)?
...ting the UAC settings. Project + Add New Item, pick "Application Manifest File". Edit the manifest text or copy/paste this:
<?xml version="1.0" encoding="utf-8"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0" xmlns:asmv3="urn:schemas-microsoft-com:asm.v3" >
...
How do you create a transparent demo screen for an Android app?
...er RelativeLayout add:
android:background="#aa000000"
To your styles.xml file:
<style name="Theme.Transparent" parent="android:Theme">
<item name="android:windowIsTranslucent">true</item>
<item name="android:windowBackground">@android:color/transparent</item>...