Query Run
select rev_timestamp, SUBSTR(rev_timestamp, 0, 4) from revision WHERE... 2 years ago
select rev_timestamp, SUBSTRING(rev_timestamp, 0, 4) from revision WHERE... 2 years ago
select rev_timestamp, substring(rev_timestamp, 0, 4) from revision WHERE... 2 years ago
select substring(rev_timestamp, 0, 4) from revision WHERE rev_timestamp like '2003%' 2 years ago