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Display names of all constraints for a table in Oracle SQL
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You need to query the data dictionary, specifically the USER_CONS_COLUMNS view to see the table columns and corresponding constraints:
SELECT *
FROM user_cons_columns
WHERE table_name = '<your table name>';
FYI, unless you specifically created your table with ...
Is there hard evidence of the ROI of unit testing?
...spent learning the testing framework, writing tests, keeping them updated, etc.. will pay for itself, and then some.
11 Ans...
What is a “batch”, and why is GO used?
I have read and read over MSDN, etc. Ok, so it signals the end of a batch.
6 Answers
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Why do you need to put #!/bin/bash at the beginning of a script file?
...he "Bourne Again Shell"), scripts can be in bash, python, perl, ruby, PHP, etc, etc. For example, you might see #!/bin/perl or #!/bin/perl5.
PS:
The exclamation mark (!) is affectionately called "bang". The shell comment symbol (#) is sometimes called "hash".
PPS:
Remember - under *nix, associat...
Rails formatting date
... be negative, 4 digits at least)
-0001, 0000, 1995, 2009, 14292, etc.
%C - year / 100 (round down. 20 in 2009)
%y - year % 100 (00..99)
%m - Month of the year, zero-padded (01..12)
%_m blank-padded ( 1..12)
%-m no-padded (1..12)
%B - The full month name (``J...
Why do you not use C for your web apps?
...buffer overflows, having a compile stage between the edit and test stages, etc).
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How to get multiple selected values of select box in php?
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If you want PHP to treat $_GET['select2'] as an array of options just add square brackets to the name of the select element like this: <select name="select2[]" multiple …
Then you can acces the array in your PHP script
<?php
header("Content-...
Java Interfaces/Implementation naming convention [duplicate]
...a Type. Then you have DumpTruck, TransferTruck, WreckerTruck, CementTruck, etc that implement Truck.
When you are using the Interface in place of a sub-class you just cast it to Truck. As in List<Truck>. Putting I in front is just Hungarian style notation tautology that adds nothing but more...
Encrypt & Decrypt using PyCrypto AES 256
...rt Random
from Crypto.Cipher import AES
class AESCipher(object):
def __init__(self, key):
self.bs = AES.block_size
self.key = hashlib.sha256(key.encode()).digest()
def encrypt(self, raw):
raw = self._pad(raw)
iv = Random.new().read(AES.block_size)
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How Scalable is SQLite? [closed]
...port records on the fly to sqlite from any rdbms like sql server or oracle etc?
– ILoveStackoverflow
Feb 16 '18 at 6:36
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