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- Alias_(SQL) abstract "An alias is a feature of SQL that is supported by most, if not all, relational database management systems (RDBMSs). Aliases provide database administrators, as well as other database users, with the ability to reduce the amount of code required for a query, and to make queries generally simpler to understand. In addition, aliasing can be used as an obfuscation technique to protect the real names of database fields.In SQL, you can alias both tables themselves, which is called a Correlation Name, or columns. A programmer can temporarily assign another name to a table or column (for the duration of the SELECT query) by using an alias. In other words, it does not actually rename the column or table. This is often useful when either tables or their columns have very long or complex names. An alias name could be anything, but usually it is kept short. For example, it might be common to use a table alias such as "pi" for a table named "price_information".The general syntax of an alias is SELECT * FROM table_name [AS] alias_name. Note that the AS keyword is completely optional and is usually kept for readability purposes. Here is some sample data that the queries below will be referencing:Using a table alias:We can also write the same query like this (Note that the AS clause is omitted this time):A column alias is similar:In the returned result sets, the data shown above would be returned, with the only exception being "DepartmentID" would show up as "Id", and "DepartmentName" would show up as "Name".Also, if only one table is being selected and the query is not using table joins, it is permissible to omit the table name or table alias from the column name in the SELECT statement. Example as follows:".
- Alias_(SQL) wikiPageID "33138152".
- Alias_(SQL) wikiPageLength "2637".
- Alias_(SQL) wikiPageOutDegree "8".
- Alias_(SQL) wikiPageRevisionID "644989587".
- Alias_(SQL) wikiPageWikiLink Category:SQL.
- Alias_(SQL) wikiPageWikiLink Column_(database).
- Alias_(SQL) wikiPageWikiLink Database_administrator.
- Alias_(SQL) wikiPageWikiLink Join_(SQL).
- Alias_(SQL) wikiPageWikiLink Obfuscation_(software).
- Alias_(SQL) wikiPageWikiLink RDBMS.
- Alias_(SQL) wikiPageWikiLink Relational_database_management_system.
- Alias_(SQL) wikiPageWikiLink Result_set.
- Alias_(SQL) wikiPageWikiLink Select_(SQL).
- Alias_(SQL) wikiPageWikiLinkText "aliases".
- Alias_(SQL) hasPhotoCollection Alias_(SQL).
- Alias_(SQL) wikiPageUsesTemplate Template:Clear.
- Alias_(SQL) wikiPageUsesTemplate Template:Refimprove.
- Alias_(SQL) wikiPageUsesTemplate Template:Reflist.
- Alias_(SQL) wikiPageUsesTemplate Template:SQL.
- Alias_(SQL) subject Category:SQL.
- Alias_(SQL) hypernym Feature.
- Alias_(SQL) type Work.
- Alias_(SQL) comment "An alias is a feature of SQL that is supported by most, if not all, relational database management systems (RDBMSs). Aliases provide database administrators, as well as other database users, with the ability to reduce the amount of code required for a query, and to make queries generally simpler to understand.".
- Alias_(SQL) label "Alias (SQL)".
- Alias_(SQL) sameAs m.0h63056.
- Alias_(SQL) sameAs Q4725589.
- Alias_(SQL) sameAs Q4725589.
- Alias_(SQL) wasDerivedFrom Alias_(SQL)?oldid=644989587.
- Alias_(SQL) isPrimaryTopicOf Alias_(SQL).