sql按顺序去重

select * from (SELECT
			min(pgmx.N_Order) pgmx_order,gzjy.C_JYNR
		FROM
			DB_WXPG.dbo.T_WXPG_PGJG lbpg
			LEFT JOIN DB_WXPG.dbo.T_WXPG_PGJG_MX pgmx ON lbpg.C_ID = pgmx.C_PG_JG_ID AND pgmx.C_SFFH = '1'
			LEFT JOIN DB_WXPG.dbo.T_WXPG_GZJY gzjy ON pgmx.C_GZJY_ID = gzjy.C_ID
		WHERE
			lbpg.C_SFYX = '1'
			AND lbpg.C_PGLX IN ('1', '2', '5', '6')
			AND pgmx.C_GZJY_ID IS NOT NULL
			AND lbpg.C_ID = '814CEE6C7B7A636DAC706574C751B1FF'
		GROUP BY
			gzjy.C_JYNR) t ORDER BY t.pgmx_order