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How can I remove duplicate rows?
...t when I had removed the old PK before I realised there where duplicates. +100
– Mikael Eliasson
Jul 19 '11 at 19:55
12
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Difference between 'new operator' and 'operator new'?
...ator new directly, like:
char *x = static_cast<char *>(operator new(100));
It's also possible to overload operator new either globally, or for a specific class. IIRC, the signature is:
void *operator new(size_t);
Of course, if you overload an operator new (either global or for a class),...
Regex to validate date format dd/mm/yyyy
...ice:
Your regexp does not work for years that "are multiples of 4 and 100, but not of 400". Years that pass that test are not leap years. For example: 1900, 2100, 2200, 2300, 2500, etc. In other words, it puts all years with the format \d\d00 in the same class of leap years, which is incorrect....
Docker can't connect to docker daemon
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100
After a detailed investigation, this issue seems to happen every time after Mac OS X is reboot...
How do I clone a single branch in Git?
...nd it seems perfect! Thanks again! Already +1'd, if possible I would give +100 :)
– k25
Mar 11 '13 at 15:38
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How can I determine the current line number in JavaScript?
...vascript throws an error is says it's on a line with a number greater than 100 million.
– Malfist
Feb 26 '10 at 17:17
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how to exclude null values in array_agg like in string_agg using postgres?
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Thanks. But if the main query (s) returns a 1000 rows, then the 2 subqueries (using unnest) will run once for each row.. Will it be better to tolerate NULLs than executing 2000 extra select queries ?
– Daud
Oct 29 '12 at 17:07
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How to jump to a particular line in a huge text file?
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try 100G file, it sucks. i have to use f.tell(), f.seek(),f.readline()
– whi
Jul 25 '13 at 2:37
add a co...
How to drop SQL default constraint without knowing its name?
...e nvarchar(256)
declare @col_name nvarchar(256)
declare @Command nvarchar(1000)
set @schema_name = N'MySchema'
set @table_name = N'Department'
set @col_name = N'ModifiedDate'
select @Command = 'ALTER TABLE ' + @schema_name + '.[' + @table_name + '] DROP CONSTRAINT ' + d.name
from sys.tables t
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How big can a MySQL database get before performance starts to degrade
...ition, we have a single table which is 200+ GiB and a few others in the 50-100 GiB range. Everything I said before holds. It still performs just fine, but the problems of running full dataset operations have become worse.
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