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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.
Using a equal sign instead of 'AS' is by far easier to read. With an equal sign you know the alias name you are looking for is in the first position of the row. When 'AS' is used and the T_SQL spans multiple lines, the alias name could literally be anywhere.
18 maj 2021 · An alias can be used to rename the columns in your SQL query. The syntax is as follows: SELECT column_1 AS alias_1, column_2 AS alias_2, … FROM table_name; Let’s apply this to a practical example.
6 wrz 2024 · A SQL alias is a temporary name for a table or column in an SQL query. It is usually used to simplify a complex query by making it easily readable or simply giving a column a more human-readable or natural-sounding name.
10 cze 2023 · Column aliases allow you to use a different and often simpler name for a column in your query. Table aliases allow you to name your table for use in other parts of your query, such as the SELECT or WHERE clauses.
Aliases are used in SQL Server for column names and table names. They serve the purpose of convenience and security. Aliases allow us to shorten and simplify long and complicated column and table names making queries and code easier to read and understand. It also helps to secure the database by concealing the actual names of the columns and table.
To assign a column or an expression a temporary name during the query execution, you use a column alias. The following illustrates the column alias syntax: column_name | expression AS column_alias Code language: SQL (Structured Query Language) (sql) In this syntax, you use the AS keyword to separate the column name or expression and the alias.
