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Disable all table constraints in Oracle
...'
AND NOT (t.iot_type IS NOT NULL AND c.constraint_type = 'P')
ORDER BY c.constraint_type DESC)
LOOP
dbms_utility.exec_ddl_statement('alter table "' || c.owner || '"."' || c.table_name || '" disable constraint ' || c.constraint_name);
END LOOP;
END;
/
Enabling the constraints again i...
How do I prevent site scraping? [closed]
... or Web data extraction), it helps to know how these scrapers work, and
, by extension, what prevents them from working well.
There's various types of scraper, and each works differently:
Spiders, such as Google's bot or website copiers like HTtrack, which recursively follow links to other pages...
SQL query return data from multiple tables
...sier to read once you get used to it. It is easier to read queries written by other folks using this syntax.
I am also going to use the concept of a small caryard which has a database to keep track of what cars it has available. The owner has hired you as his IT Computer guy and expects you to be a...
What's the difference between lists enclosed by square brackets and parentheses in Python?
... mean tuples are mutable. In the example above, a new tuple is constructed by adding together the two tuples as arguments. The original tuple is not modified. To demonstrate this, consider the following:
>>> x = (1,2)
>>> y = x
>>> x += (3,)
>>> x
(1, 2, 3)
>&...
What are the best practices for using Assembly Attributes?
...ution with multiple project. I am trying to optimize AssemblyInfo.cs files by linking one solution wide assembly info file. What are the best practices for doing this? Which attributes should be in solution wide file and which are project/assembly specific?
...
How can I sort a dictionary by key?
...
@achrysochoou: if that worked, it must have been by sheer luck. As you've been told, regular dictionaries have no concept of sorting, no matter if you assign the keys sorted or in random way.
– Ricardo Cárdenes
Jan 25 '12 at 11:25
...
List files by last edited date
...-Rt
where -R means recursive (include subdirectories) and -t means "sort by last modification date".
To see a list of files sorted by date modified, use:
ls -l -Rt
An alias can also be created to achieve this:
alias lt='ls -lht'
lt
Where -h gives a more readable output.
...
What are the differences between ArrayList and Vector?
...ubling the size of its array, while the ArrayList increases its array size by 50 percent.
Reference
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How to remove an element from a list by index
How do I remove an element from a list by index in Python?
18 Answers
18
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postgresql return 0 if returned value is null
...query:
SELECT AVG( price )
FROM(
SELECT *, cume_dist() OVER ( ORDER BY price DESC ) FROM web_price_scan
WHERE listing_Type = 'AARM'
AND u_kbalikepartnumbers_id = 1000307
AND ( EXTRACT( DAY FROM ( NOW() - dateEnded ) ) ) * 24 < 48
AND COALESCE( price, 0 ) > ...