Description of fiscal_start_end

     { FISCAL_YEAR_START_DATE |
	FISCAL_YEAR_END_DATE |
	FISCAL_QUARTER_START_DATE |
	FISCAL_QUARTER_END_DATE |
	FISCAL_MONTH_START_DATE |
	FISCAL_MONTH_END_DATE |
	FISCAL_WEEK_START_DATE |
	FISCAL_WEEK_END_DATE
     } ( dtexpr [ , fiscal_year_start] [ , nlsparam ] )