It's difficult to tell what开发者_如何学C is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical andcannot be reasonably answered in its current form.
table user ____________________________________________ idnamenicknameinfo_id 1johnapple11 2paulbanana12 3pauline melon13
I\'m stuck on this: I\'m working on a Joomla! 1.6 extension and using categories. For those who haven\'t used categories, they work like this:
I have a MySQL table with an ID column, intended to be imported from external data, but for this one case there were no IDs provided. Therefore, I have a column of pure zeros. I need to update this co
I have a oracle query and part of it is calculating some value using DECODE.For example: SELECT ..., (SELECT DECODE((SELECT 23 FROM DUAL),
What SQL databases, if any, support subqueries in CHECK constraints? At present and as far as I know, Oracle, MySQL, and PostgreSQL do not.
i\'m a bit stuck and would appreciate the help..... i\'m sure i need to use a sub query but when i try i m getting errors saying returning more than one row....
I\'m selecting something from a sub-select, which in turn gives me a list of sums. Now I want to select the base_unit column, which contains the unit of measurement. I can\'t seem to add base_unit to
I have the following SQL query: SELECT games.id, games.GameTitle FROM games WHERE EXISTS ( SELECT filename FROM banners
Thanks in advance for any assistance.I am new to SQL and have looked at several related threads on this site, and numerous other sites on Google, but have not been able to figure out what I am doing w
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