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In SQL, you can alias tables and columns. A table alias is called a correlation name, according to the SQL standard. [1] A programmer can use an alias to temporarily assign another name to a table or column for the duration of the current SELECT query. Assigning an alias does not actually rename the column or table.
A rename ρ) is a unary ... where {a 1,...,a n} is the set of attribute names unique to R and t[a 1, ... The SQL table model is a bag , rather than a set. For ...
Transact-SQL (T-SQL) is Microsoft's and Sybase's proprietary extension to the SQL (Structured Query Language) used to interact with relational databases.T-SQL expands on the SQL standard to include procedural programming, local variables, various support functions for string processing, date processing, mathematics, etc. and changes to the DELETE and UPDATE statements.
In relational algebra, a rename is a unary operation written as / where: R is a relation; a and b are attribute names; b is an attribute of R; The result is identical to R except that the b attribute in all tuples is renamed to a. [1]
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When a table or a procedure is created, it is created in a particular schema, and other users can access it only by using that schema's name as a prefix to the object's name. The way around for this is for the schema owner creates a synonym with the same name as the table name.
Mexico's president rebuffed President-elect Donald Trump's call to rename the Gulf of Mexico the "Gulf of America" with a suggestion that the United States ought to be renamed "Mexican America." ...
The family of a man who was murdered in Londonderry have said they have been "failed by the justice system" after his killer went on the run from prison again.