PL/SQL Challenge 每日一题：2017-3-1 对象类型

Update this page

This is a maintenance category, used for maintenance of the Wikipedia project. It is not part of the encyclopedia and contains non-article pages, or groups articles by status rather than subject. Do not include this category in content categories. This is a tracking category. It builds and maintains a list of pages primarily for the sake of the list itself. They are not part of the encyclopedia's categorization scheme. This category is hidden on its member pages—unless the corresponding user preference (Appearance → Show hidden categories) is set. These categories can be used to track, build and organize lists of pages needing "attention en masse" (for example, pages using deprecated syntax), or that may need to be edited at someone's earliest convenience. These categories also serve to aggregate members of several lists or sub-categories into a larger, more efficient list (discriminated by classifications).

This category combines all articles with unsourced statements from September 2010 (2010-09) to enable us to work through the backlog more systematically. It is a member of Category:Articles with unsourced statements.
To add an article to this category add {{Citation needed|date=September 2010}} to the article. If you omit the date a bot will add it for you at some point.

Random page in this category

• Please help improve an article in this category by adding references to reliable sources that verify content within the article. Once the reliable source references have been added, the unsourced (citation needed) tag can be removed.