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You can use AS for table aliasing on many SQL servers (at least MsSQL, MySQL, PostrgreSQL) but it's always optional and on Oracle it's illegal. So remove the AS: SELECT G.Guest_ID, G.First_Name, G.Last_Name FROM Guest G
Oracle Alias. Summary: in this tutorial, you will learn how to use Oracle alias including column and table aliases to make the heading of the output more meaningful and to improve the readability of a query.
23 sty 2012 · To be honest, there are four six different ways you can define the alias for a column in a SELECT statement – the alias being the column name the application or API sees when the result is returned from SQL Server. The methods I've seen used are:
This Oracle tutorial explains how to use Oracle ALIASES (temporary names for columns or tables) with syntax and examples. Oracle ALIASES can be used to create a temporary name for columns or tables.
17 gru 2019 · Using AS to assign meaningful or simpler names. You can use AS to assign a name to a column of data you are selecting or that has been calculated. SELECT user_only_num1 AS AgeOfServer, (user_only_num1 - warranty_period) AS NonWarrantyPeriod FROM server_table. This results in output as below.
SQL aliases are used to give a table, or a column in a table, a temporary name. Aliases are often used to make column names more readable. An alias only exists for the duration of that query. An alias is created with the AS keyword.
The AS clause allows you to give an alias name to EQL attributes and results. The alias name can be given to an attribute, attribute list, expression result, or query result set. The aliased name is temporary, as it does not persist across different EQL queries.
