sql server - Get the last day of the month in SQL -

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I have to meet in the form of a date in SQL, on the last day of the month. If I have the first day of the month, then I can do something like this: 

  DATEADD (DAY, DATEADD (MONTH, '2009-05-01', 1), -1) < / Code>

But does anyone know how it is normalized, can I get any date for the last day of the month?

This is my version; No string manipulation or casting is necessary, only one to each DATEADD , YEAR and MONTH function: 

  announcement @ test date set @ test = gate-date () - or Select another date DATEADD (month, ((year (TTES) - 1900) * 12) + month (@ test), -1)

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