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SQL Server 2008: how do I grant privileges to a username?
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If you want to give your user all read permissions, you could use:
EXEC sp_addrolemember N'db_datareader', N'your-user-name'
That adds the default db_datareader role (read permission on all tables) to that user.
There's also a db_datawriter role - whi...
make: Nothing to be done for `all'
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Sometimes "Nothing to be done for all" error can be caused by spaces before command in makefile rule instead of tab. Please ensure that you use tabs instead of spaces inside of your rules.
all:
<\t>$(CC) $(CFLAGS) ...
instead of
all:
$(CC) $(CFL...
PostgreSQL: Difference between text and varchar (character varying)
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There is no difference, under the hood it's all varlena (variable length array).
Check this article from Depesz: http://www.depesz.com/index.php/2010/03/02/charx-vs-varcharx-vs-varchar-vs-text/
A couple of highlights:
To sum it all up:
char(n) – takes t...
What is the difference between “Flush Magento Cache” and “Flush Cache Storage” in magento's cache ma
...s everything but might affect other applications if they're using it.
Normally the location is var/cache/ in Magento's folder so is not shared after all. It is safe to use either button. Sometimes (rarely) entries are not clearly tagged or Magento loses track of them and only the second button has ...
Why would you use Expression rather than Func?
...ment and submits it to server (rather than executing the lambda).
Conceptually, Expression<Func<T>> is completely different from Func<T>. Func<T> denotes a delegate which is pretty much a pointer to a method and Expression<Func<T>> denotes a tree data structure f...
Copying a HashMap in Java
...ew HashMap<Integer,myObject>(myobjectListA);
This will create a (shallow) copy of the map.
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Test or check if sheet exists
Basically I loop through all sheets in the origin workbook then set destsheet in the destination workbook to the sheet with the same name as the currently iterated one in the origin workbook.
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difference between throw and throw new Exception()
...w ex; throws the original exception but resets the stack trace, destroying all stack trace information until your catch block.
NEVER write throw ex;
throw new Exception(ex.Message); is even worse. It creates a brand new Exception instance, losing the original stack trace of the exception, as well...
Studies on optimal code width?
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Actually, the 80-column thing long precedes DOS. It comes from card punches, which were 80-column devices.
And to kind of answer the OP's question, one "study" has been going on for about 600 years now - the printed book. These ...
How to create a new (and empty!) “root” branch?
...ository. By "root" branch I mean a branch that is entirely independent of all the other branches in the repository 1 .
4 A...