convert data type in sql
# There are two ways to change data type. By using CAST or ::
# Eg. CAST (column_name AS target_type) OR column_name::target_type
SELECT
CAST (date_occurred AS DATE)
CAST (total_amount AS INTEGER)
CAST (duration AS INTERVAL)
# OR
date_occurred::DATE
total_amount::INTEGER
duration::INTERVALsql cast to integer
-- NOTE: this is for SQL-Oracle specifically
/*
<...> : Your personal entry
*/
-- syntax:
CAST(<variable> as <variable-type>) -- in this case: <variable-type> = INTEGER
-- example:
SELECT CAST(MEMBER_NO as INTEGER)
FROM DUAL;Copyright © 2021 Codeinu
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