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A database dump contains a record of the table structure and/or the data from a database and is usually in the form of a list of SQL statements ("SQL dump"). A database dump is most often used for backing up a database so that its contents can be restored in the event of data loss.
It can sometimes be useful to run queries against this database to extract information that is otherwise hard to find. For example: Articles with H.M.S. in their title that have not been edited for 12 months. Redirects with fewer than 20 incoming links that redirect to categories; All red links on pages within the scope of a particular WikiProject
Query by Example (QBE) is a database query language for relational databases. It was devised by Moshé M. Zloof at IBM Research during the mid-1970s, in parallel to the development of SQL . [ 1 ] It is the first graphical query language, using visual tables where the user would enter commands, example elements and conditions.
MySQL (/ ˌ m aɪ ˌ ɛ s ˌ k juː ˈ ɛ l /) [5] is an open-source relational database management system (RDBMS). [5] [6] Its name is a combination of "My", the name of co-founder Michael Widenius's daughter My, [7] and "SQL", the acronym for Structured Query Language.
At the linked site experimental dumps and the script itself can be downloaded. As an example it was used to generate these copies of English WikiPedia 24 April 04, Simple WikiPedia 1 May 04(old database) format and English WikiPedia 24 July 04 Simple WikiPedia 24 July 04, WikiPedia Francais 27 Juillet 2004 (new format).
sample my.cnf — Here is a working (as of 8 July 2005) my.cnf configuration for Linux. This should allow you to simply cat the uncompressed dump to the mysql client without any other command line arguments or stream edits.
Traditional savings account rates. The Federal Deposit Insurance Corporation tracks monthly average interest rates paid on savings and other deposit accounts, like certificates of deposit, that ...
Correlated subqueries may appear elsewhere besides the WHERE clause; for example, this query uses a correlated subquery in the SELECT clause to print the entire list of employees alongside the average salary for each employee's department. Again, because the subquery is correlated with a column of the outer query, it must be re-executed for ...