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Best way to use PHP to encrypt and decrypt passwords? [duplicate]
...me way your application can. You could still get some protection from some SQL injection attacks and misplaced db backups if you store a secret key in a file and use that to encrypt on the way to the db and decrypt on the way out. But you should use bindparams to completely avoid the issue of SQL in...
Linq: GroupBy, Sum and Count
...ame is always the same for any given code, but apparently generates better SQL in EF.
I'd also suggest that you should change the Quantity and Price properties to be int and decimal types respectively - why use a string property for data which is clearly not textual?
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How to use LINQ to select object with minimum or maximum property value
...be slower than the other solution suggested. However, if this is a LINQ to SQL table and DateOfBirth is an indexed column, then SQL Server will use the index instead of sorting all the rows. Other custom IEnumerable<T> implementations could also make use of indexes (see i4o: Indexed LINQ, or t...
Count work days between two dates
How can I calculate the number of work days between two dates in SQL Server?
23 Answers
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Django - limiting query results
...with no database access.
As you can see below your code only executes one sql query to fetch only the last 10 items.
In [19]: import logging
In [20]: l = logging.getLogger('django.db.backends')
In [21]: l.setLevel(logging.DEBUG)
In [22]: l...
SQLite - UPSERT *not* INSERT or REPLACE
...PLACE INTO Employee (id, role)
VALUES (1, 'code monkey');
GOOD: Use SQLite On conflict clause
UPSERT support in SQLite! UPSERT syntax was added to SQLite with version 3.24.0!
UPSERT is a special syntax addition to INSERT that causes the INSERT to behave as an UPDATE or a no-op if the INSERT ...
std::string length() and size() member functions
...ts, @Naveen, while fans of Perl's "There's more than one way to do it" (or SQL's syntax with a bazillion optional "noise words" giving umpteen identically equivalent syntactic forms to express one concept) will no doubt be complaining that Ruby, and especially C++, just don't go far enough in offeri...
Decimal precision and scale in EF Code First
...t I'm find out now that a property of type System.Decimal gets mapped to a sql column of type decimal(18, 0).
16 Answers
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@Basic(optional = false) vs @Column(nullable = false) in JPA
...d in
memory by the Persistence Provider and
an exception raised before SQL is sent
to the database otherwise when using
'updatable=false' 'optional'
violations would never be reported.
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ERROR: permission denied for sequence cities_id_seq using Postgres
...new at postgres (and at database info systems all in all). I ran following sql script on my database:
4 Answers
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