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Sep
18
comment Relational Model vs. Database Products
What is the point of saying that no-one can operate "real sets" (whatever you may mean by those)? I don't think that's what the OP is after. As far as I can see, the question is merely about differences from the perspective of a user of an RDBMS (rather than a human being in general). As a user of an RDBMS, you work with data-sets using set operations provided by the system.
Sep
16
comment sql server date issue
There may be no need to post the entire query. What could be more useful is the type of the dob column, where you are executing the query and consuming the results, and possibly the locale settings of the system where you are executing the query as well.
Sep
16
comment sql server date issue
If dob is a date or datetime, SET LANGUAGE will have no impact on how the column is displayed unless you do CAST(dob AS varchar(…)). If it's a varchar already, SET LANGUAGE will have no impact either. Therefore, SET LANGUAGE alone won't help here.
Sep
10
revised Database Design for Preserving Values and Additional columns
added paragraphs for readability, minor spelling and punctuation corrections
Sep
10
suggested approved edit on Database Design for Preserving Values and Additional columns
Aug
21
revised average record hourly
edited body
Aug
21
answered average record hourly
Aug
19
comment What is better? Delete and insert or update?
Any triggers for update on the table?
Aug
19
awarded  Revival
Aug
19
answered Strange behaviours with SET options in SSMS
Aug
19
answered Derive daily delta from total daily counts? Tsql
Jul
25
comment How do I place leading zeros for numbers less than 10 without affecting those 10+?
Agree with @ypercube. You could change the first comparison to MyColumn < 10 but that might break as we don't know if MyColumn is guaranteed to ever contain only numbers.
Jul
25
comment SQL Server - constraint to prevent overlapping dates
In response to the earlier comment of yours where you are giving an example of INSERT that doesn't work, that INSERT doesn't populate a PreviousFinished value, which it must according to the method in the linked answer.
Jul
25
comment SQL Server - constraint to prevent overlapping dates
Or perhaps you are struggling to understand how the method in the answer to the linked question works?
Jul
25
comment SQL Server - constraint to prevent overlapping dates
Regarding your update, I don't really understand the actual problem you are facing. Is this about your table already having ranges that overlap and you wanting to detect and resolve them?
Jul
23
comment SQL Server - constraint to prevent overlapping dates
That's great news, people will come here and immediately see that this question already has an answer. :)
Jul
23
comment What is the correct way to ensure unique entries in a temporal database design?
How would you go about splitting an existing (closed) range into two with this restriction implemented? Doesn't seem possible to me, but I might be missing something. (However, it certainly seems possible with the other variation, the one that allows gaps.)
Jul
23
comment How do I include nulls during comparisons in SQL Server?
CASE value WHEN 26 THEN 1 ELSE 0 END = 0. Beautiful, ever so intuitive and by all means sanest of ways.</sarcasm>
Jul
14
comment Getting unique names when the IDs are different (DISTINCT ?)
+1, although deriving a table appears to be perfectly unnecessary.
Jul
9
revised How do I go about easy table input without creating an application?
minor rephrasings to avoid possible ambiguity