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MySQL, update multiple tables with one query
...se, we increase the number of books in a particular order with Order.ID = 1002 in Orders table then we also need to reduce that the total number of books available in our stock by the same number in Books table.
UPDATE Books, Orders
SET Orders.Quantity = Orders.Quantity + 2,
Books.InStock = Book...
How can I hash a password in Java?
... * @param cost the exponential computational cost of hashing a password, 0 to 30
*/
public PasswordAuthentication(int cost)
{
iterations(cost); /* Validate cost */
this.cost = cost;
this.random = new SecureRandom();
}
private static int iterations(int cost)
{
if ((cos...
How to get last key in an array?
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answered Feb 27 '10 at 17:11
Pascal MARTINPascal MARTIN
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What does “default” mean after a class' function declaration?
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edited Jun 26 '14 at 20:05
answered Jun 28 '11 at 7:08
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What makes a SQL statement sargable?
...a function in the where clause:
SELECT ... FROM ...
WHERE Year(myDate) = 2008
The SQL optimizer can't use an index on myDate, even if one exists. It will literally have to evaluate this function for every row of the table. Much better to use:
WHERE myDate >= '01-01-2008' AND myDate < '01-0...
Blurry text after using CSS transform: scale(); in Chrome
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Git: which is the default configured remote for branch?
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Mohsen
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answered Jan 31 '11 at 2:28
scragzscragz
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How can I convert immutable.Map to mutable.Map in Scala?
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answered Feb 19 '11 at 12:03
Kevin WrightKevin Wright
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.gitignore file, where should I put it in my xcode project?
... Daniel RibeiroDaniel Ribeiro
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How to change past commit to include a missed file?
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Rafał RawickiRafał Rawicki
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