How can you add a prefix to duplicated column names in Oracle SQL when using "create as select" statement?

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To add a prefix to duplicated column names in Oracle SQL when using "create as select" statement, you can use the "AS" keyword to alias the column names with the desired prefix. For example:

CREATE TABLE new_table AS
SELECT col1 AS prefix_col1, col2 AS prefix_col2, col1 AS prefix_col3
FROM old_table;

In this example, the column names "col1" and "col3" are duplicated, so they are aliased with the prefix "prefix" to create unique names in the new table. The resulting column names in the new table will be "prefixcol1", "prefixcol2", and "prefixcol3".