Implicit aliasing of column detected SQL-L012

Implicit aliasing of column not allowed. Use explicit AS clause.

Example

You can set column aliases in SQL typing the identifier right after the column name.

SELECT column_one c1
FROM table;

(or) you can use the keyword AS to indicate the alias.

SELECT column_one AS c1
FROM table;

AS is a more explicit way of mentioning the alias.

Ref: https://stackoverflow.com/questions/4164653/whats-the-purpose-of-sql-keyword-as