| _覓 | 覦覈襦 | 豕蠏手 | 殊螳 | 譯殊碁 |
|
FrontPage › Isnull譯殊
|
|
|
螳 isnull()襯 .
select isnull(colA, colB) colA from test 襷曙
貎朱Μ colA螳 null 蟆曙 colB varchar(1)朱 讌るΠ.
鏤
|
蟇磯Μ覲企 豢糾碓襴襯 襷 襷れ企. 襷 襷 覃 螳 蟇磯Μ螳 蠍郁 蠏碁 谿語朱 蠏瑚 豢糾碓襴螳 . (豢) |