sql1=select*from(select*,row_numberover(orderbyusername)asrowNumberfromuserswhereregfrom="&admin&")astwheret.rowNumber>0andt.rowNumber<=030orderbyusername怎么會(huì)有27條記錄呢,除非你的表一共就27條記錄吧。用游標(biāo)或臨時(shí)表--游標(biāo)declareyoubiao1for查詢1openyoubiao1fetchnextfromyoubiao1into變量while@@FETCH_STATUS=0begin里面一次套用end--臨時(shí)表declare@IDintset@ID=1whileExists(select*from表)begin--處理--set@ID=@ID1end
declarexvarchar2(20)v_lengthintyintv_strvarchar2(1)beginx:="wqr3331412rr"selectlength(x)intov_lengthfromdualy:=1whiley<=v_lengthloopselectsubstr(x,y,1)intov_strfromdualdbms_output.put_line(v_str)y:=y1endloopend
直接運(yùn)行吧,結(jié)果如圖