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nullable object must have a value
... resolved my problem, i just change null able object to non null able, and convert datetime to string directly, not by datetimeobject.value.datetime.tostring()
– adnan
Dec 28 '16 at 12:41
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How do I create a parameterized SQL query? Why Should I?
...lue("@Baz", Baz), you could do that, but you shouldn't, especially because converting string values that map by default to nvarchar to the actual varchar type is one of the most common places that can trigger the effects mentioned in that link.
– Joel Coehoorn
...
“An attempt was made to load a program with an incorrect format” even when the platforms are the sam
...
Yes, but I converted my project in 'Any CPU' to 'x64'. My 32 bit project working fine but the same code I converted to 64 bit, that project not working fine as 32 bit. Can you please give me the proper 64 bit conversion process...
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How can I selectively escape percent (%) in Python strings?
...of the second table in that section, it states:
'%' No argument is converted, results in a '%' character in the result.
Therefore you should use:
selectiveEscape = "Print percent %% in sentence and not %s" % (test, )
(please note the expicit change to tuple as argument to %)
Without kn...
Why do we have to specify FromBody and FromUri?
...s TimeSpan, DateTime, Guid, decimal, and string, plus any type with a type converter that can convert from a string.
For complex types, Web API tries to read the value from the message body, using a media-type formatter.
So, if you want to override the above default behaviour and force Web API to ...
Set database from SINGLE USER mode to MULTI USER
...ter
GO
DECLARE @kill varchar(8000) = '';
SELECT @kill = @kill + 'kill ' + CONVERT(varchar(5), spid) + ';'
FROM master..sysprocesses
WHERE dbid = db_id('<yourDbName>')
EXEC(@kill);
Then immediately after (in second query window):
USE master ALTER DATABASE <yourDbName> SET OFFLINE WI...
C# Entity-Framework: How can I combine a .Find and .Include on a Model Object?
... Expression.Property(parameter, p.Name),
Expression.Convert(
Expression.PropertyOrField(Expression.Constant(new { id = id[i] }), "id"),
p.ClrType)))
.Aggregate(Expression.AndAlso);
return Expression.Lambda<Func<...
LEFT JOIN only first row
...hat worked for me and i wanted to generalize and explain what's going on.
convert:
LEFT JOIN table2 t2 ON (t2.thing = t1.thing)
to:
LEFT JOIN table2 t2 ON (t2.p_key = (SELECT MIN(t2_.p_key)
FROM table2 t2_ WHERE (t2_.thing = t1.thing) LIMIT 1))
the condition that connects t1 and t2 is mo...
What is the meaning of the prefix N in T-SQL statements and when should I use it?
... string constants with the letter N. Without
the N prefix, the string is converted to the default code page of the
database. This default code page may not recognize certain characters.
If you want to know the difference between these two data types, see this SO post:
What is the difference...
How do I get textual contents from BLOB in Oracle SQL
... procedure dictates that its output be RAW.
-- This next procedure converts that RAW data to character data.
l_text_buffer := UTL_RAW.CAST_TO_VARCHAR2(l_buffer);
-- For the next iteration through the BLOB, bump up your offset
-- location (i.e., where you start readin...