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What columns generally make good indexes?
...portant role in query optimization and searching the results speedily from tables. So it is most important step to select which columns to be indexed. There are two major places where we can consider indexing: columns referenced in the WHERE clause and columns used in JOIN clauses. In short, such co...
What is the difference between Scope_Identity(), Identity(), @@Identity, and Ident_Current()?
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The ident_current(name) returns the last identity created for a specific table or view in any session.
The identity() function is not used to get an identity, it's used to create an identity in a select...into query.
The session is the database connection. The scope is the current query or the c...
How to select multiple rows filled with constants?
Selecting constants without referring to a table is perfectly legal in an SQL statement:
15 Answers
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Div width 100% minus fixed amount of pixels
How can I achieve the following structure without using tables or JavaScript? The white borders represent edges of divs and aren't relevant to the question.
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Can't compare naive and aware datetime.now()
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It is working form me.
Here I am geeting the table created datetime and adding 10 minutes on the datetime.
later depending on the current time, Expiry Operations are done.
from datetime import datetime, time, timedelta
import pytz
Added 10 minutes on database dateti...
How to know when UITableView did scroll to bottom in iPhone
I would like to know when a UITableView did scroll to bottom in order to load and show more content, something like a delegate or something else to let the controller know when the table did scroll to bottom.
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Select values from XML field in SQL Server 2008
...alue('(/person//lastName/node())[1]', 'nvarchar(max)') as LastName
FROM [myTable]
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How to change owner of PostgreSql database?
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@mArtinko5MB: Also impossible, ALTER TABLE doesn't DROP the table. Show us your SQL, something is badly broken in your statements.
– Frank Heikens
Oct 24 '13 at 13:24
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How do I remove the first characters of a specific column in a table?
...ow can I remove the first 4 characters of values of a specific column in a table? Column name is Student Code and an example value is ABCD123Stu1231 .
I want to remove first 4 chars from my table for all records
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Print only?
... but I had two troubles with it: for one if any of the element's parents established its own relative/absolute positioning the content would still be offset unless I used position:fixed instead. However, Chrome and Safari would also truncate content, especially after the first page. So my final work...