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问题： 请高手帮忙，怎样提高这个SQL语句的运行速度（建立索引）
描述:
描述:
select ss02 from sdsd where SS01='UREAPPLY' and ss04 like '财务科/%' and ss05=2 and ss00 in (SELECT sd01 From sjdp WHERE sd02 IN (SELECT ys00 From yhsj WHERE (ys01 = 'sa' OR YS01 IN (SELECT YQ01 From yhzb WHERE yq00 IN (SELECT ZD02 From zqdp WHERE zd01 IN (SELECT yq00 From OA_SYS.SYSDBA.yhqx WHERE yq01 = 'sa')))) AND ys02 = 'UREAPPLY')) order by ss09