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Are there any disadvantages to always using nvarchar(MAX)?
...but-varchar_2800_max_2900_.aspx
Integration implications - hard for other systems to know how to integrate with your database
Unpredictable growth of data
Possible security issues e.g. you could crash a system by taking up all disk space
There is good article here:
http://searchsqlserver.techtarge...
Converting int to bytes in Python 3
...s much more expensive, so never use lists when you can use tuples. You can convert bigger integers by using int.to_bytes(3, "little").
Initializing bytes with a given length makes sense and is the most useful, as they are often used to create some type of buffer for which you need some memory of gi...
Should import statements always be at the top of a module?
...has to perform a few instructions just to see if the module exists / is in sys.modules / etc.
– John Millikin
Sep 25 '08 at 17:56
25
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Assign pandas dataframe column dtypes
... pd.to_timedelta and pd.to_numeric
(As mentioned below, no more "magic", convert_objects has been deprecated in 0.17)
df = pd.DataFrame({'x': {0: 'a', 1: 'b'}, 'y': {0: '1', 1: '2'}, 'z': {0: '2018-05-01', 1: '2018-05-02'}})
df.dtypes
x object
y object
z object
dtype: object
df
x ...
How to convert a boolean array to an int array
I use Scilab, and want to convert an array of booleans into an array of integers:
6 Answers
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How can I convert bigint (UNIX timestamp) to datetime in SQL Server?
How can I convert UNIX timestamp (bigint) to DateTime in SQL Server?
15 Answers
15
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Converting Stream to String and back…what are we missing?
...s to a formatted string
a formatted string to the original bytes
look at Convert.ToBase64String and Convert. FromBase64String
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Formatting Numbers by padding with leading zeros in SQL Server
...)) + EmployeeId
If the column is an INT, you can use RTRIM to implicitly convert it to a VARCHAR
SELECT REPLICATE('0',6-LEN(RTRIM(EmployeeId))) + RTRIM(EmployeeId)
And the code to remove these 0s and get back the 'real' number:
SELECT RIGHT(EmployeeId,(LEN(EmployeeId) - PATINDEX('%[^0]%',Empl...
What's the strangest corner case you've seen in C# or .NET? [closed]
... the amount of points given to customers. The issue was related to casting/converting double to int.
In code below:
double d = 13.6;
int i1 = Convert.ToInt32(d);
int i2 = (int)d;
does i1 == i2 ?
It turns out that i1 != i2.
Because of different rounding policies in Convert and cast operator the...
Equivalent of LIMIT and OFFSET for SQL Server?
...
Another sample :
declare @limit int
declare @offset int
set @offset = 2;
set @limit = 20;
declare @count int
declare @idxini int
declare @idxfim int
select @idxfim = @offset * @limit
select @idxini = @idxfim - (@limit-1);
WITH paging AS
(
SE...