What is abc in the following MySQL statement?

SELECT * FROM my_table WHERE MATCH(abc) AGAINST('xyz');

Column name: In the MATCH clause, abc represents the name of the column against which the full-text search is performed. In this case, the search is conducted in the column named abc within the my_table table.
Table name: abc is not the name of the table; it specifies the column within the table where the search operation is conducted.
Search string: The search string in this context is 'xyz', which is specified within the AGAINST function.
Database name: abc is not a database name; it specifies a column within a specific table.

Therefore, in the given MySQL statement, abc refers to the column name.