how to get date from sql to yyyy-mm-dd format code example

Example 1: sql to date

-- Oracle:TO_DATE(string, format)
SELECT TO_DATE('2012-06-05', 'YYYY-MM-DD') FROM dual;
SELECT TO_DATE('05/06/2012 13:25:12', 'DD/MM/YYYY HH24:MI:SS') FROM dual;
-- SQL Server: CONVERT(data_type, string, style). Cf source link for style codes.
SELECT CONVERT(DATETIME, '2012-06-05', 102);		-- Raises error if impossible
SELECT TRY_CONVERT(DATETIME, '2012-06-05', 102);	-- Returns Null if impossible
-- MySQL: STR_TO_DATE(string, format): 
SELECT STR_TO_DATE('2012-06-05','%Y-%m,%d');

Example 2: sql server date format yyyy-mm-dd

convert(varchar, [column_date], 20) --(date or datetime) to yyyy-MM-dd HH:mm:ss
convert(varchar, [column_date], 23) --(date or datetime) to yyyy-MM-dd

--ref https://www.mssqltips.com/sqlservertip/1145/date-and-time-conversions-using-sql-server/

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