just pass columnName as parameter YEAR
SELECT YEAR(ASOFDATE) from PSASOFDATE;
another should use DATE_FORMAT
SELECT DATE_FORMAT(ASOFDATE, '%Y') from PSASOFDATE;
UPDATE 1
I'm sure this is a varchar value with the format MM / dd / YYYY, this is the case,
SELECT YEAR(STR_TO_DATE('11/15/2012', '%m/%d/%Y'));
LAST RESORT if all requests fail
use SUBSTRING
SELECT SUBSTRING('11/15/2012', 7, 4)
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