how to casting data types in postgresql
CAST( expression AS target_type);
-- example) extract from String into an integer
SELECT CAST('500' AS INTEGER);
-- or
expression :: type
-- example) extract from '2019-07-13 1:20:50' to '2019-07-13'
SELECT '2019-07-13 1:20:50'::TIMESTAMP::DATE;Copyright © 2021 Codeinu
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