SELECT col1, col2,
CASE
WHEN col3 > 1 AND col3 <2
THEN '1'
WHEN col3 > 2 AND col3 <3
THEN '2'
WHEN col3 > 3 AND col3 <4
THEN '3'
ELSE '4'
END mylevel
FROM table
select case
when nsrsbh='330165737758262' then nsrsbh
when nsrsbh='330106745808709' then nsrsbh
else '99999'
end
from WS_TDS_SQ
select case nsrsbh
when '330165737758262' then nsrsbh
when '330106745808709' then nsrsbh
else '99999'
end
from table
decode(条件,值1,返回值1,值2,返回值2,...值n,返回值n,缺省值)
decode(字段或字段的运算,值1,值2,值3)
select decode (value, <if this value>, <return this value>) FROM table
select decode(col1,'330165737758262',nsrsbh,'330106745808709',nsrsbh,0) from table
select decode(col1,'330165737758262','6','9') from table