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Oracle SQL Query for listing all Schemas in a DB
...as, their ID's and date created in DB :
USERNAME USER_ID CREATED
------------------------------ ---------- ---------
SCHEMA1 120 09-SEP-15
SCHEMA2 119 09-SEP-15
SCHEMA3 118 09-SEP-15
...
How to create id with AUTO_INCREMENT on Oracle?
...
SYS_GUID returns a GUID-- a globally unique ID. A SYS_GUID is a RAW(16). It does not generate an incrementing numeric value.
If you want to create an incrementing numeric key, you'll want to create a sequence.
CREATE SEQUENCE name_of_sequence
START WITH 1
INCREMENT BY 1
CACHE 1...
Android encryption / decryption using AES [closed]
...)
You could use functions like these:
private static byte[] encrypt(byte[] raw, byte[] clear) throws Exception {
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
byte[] encrypted = cipher.do...
How to write LaTeX in IPython Notebook?
... Gotcha. The best solution for that right now would be to use 'raw' cells instead of markdown, and just type LaTeX as you would. Then use nbconvert to turn the ipynb to TeX (code, figures and all), and run latex to render that to PDF, etc. You don't get live-rendered TeX in the browser...
Creating a dynamic choice field
..._from_request(self.request)
for l in get_all_choices().filter(user=user_id):
admin = 'y' if l in self.core else 'n'
choice = (('%s_%s' % (l.name, admin)), ('%s' % l.name))
self.affiliated_choices.append(choice)
super(SupportForm, self).__init__(*ar...
Connecting to TCP Socket from browser using javascript
...ebsockets for this.
Currently no popular browser has implemented any such raw sockets api for javascript that lets you create and access raw sockets, but a draft for the implementation of raw sockets api in JavaScript is under-way. Have a look at these links:
http://www.w3.org/TR/raw-sockets/
htt...
How can I see the raw SQL queries Django is running?
...
See the docs FAQ: "How can I see the raw SQL queries Django is running?"
django.db.connection.queries contains a list of the SQL queries:
from django.db import connection
print(connection.queries)
Querysets also have a query attribute containing the query to...
Using smart pointers for class members
...eep the pointed object alive). The simplest kind of observing pointer is a raw pointer:
#include <memory>
class Device {
};
class Settings {
std::unique_ptr<Device> device;
public:
Settings(std::unique_ptr<Device> d) {
device = std::move(d);
}
Device* ge...
How to use sed to replace only the first occurrence in a file?
... Input: Output:
Apple Banana
Apple Apple
Orange Orange
Apple Apple
This is the simple script: Editor's note: works with GNU sed only.
sed '0,/Apple/{s/Apple/Banana/}' input_filename
The first two parameters 0 and /Apple/ are the range specifier....
How to get body of a POST in php?
...streamsdocs:
php://input is a read-only stream that allows you to read raw data
from the request body. In the case of POST requests, it is preferable
to use php://input instead of $HTTP_RAW_POST_DATA as it does not
depend on special php.ini directives. Moreover, for those cases where
$HT...