Oracle, Make date time's first day of its month

Question

I have a datevariable, I would like to have convert it to first day of its monh,

• Eg: 10/10/2010 -> 01/10/2010
• Eg: 31/07/2010 -> 01/07/2010

Answer 1

SELECT trunc(to_date('22-AUG-03'), 'MON') FROM dual;

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