做程序有時候，要判斷某列是否屬于操作表，對比有些煩就寫了一個存儲過程。

create proc Pr_getTableColumnLen
(
--傳入的表名和列名
@inTableName varchar(20),
@inColumnName varchar(20),

--傳入的標志變量和內容變量
@lenContent varchar(200),
@flag varchar(1)
)

as

--內部變量
declare
@rColumnName varchar(20),
@rColumnType varchar(10),
@rColumnByte int,
@rColumnNullStatus varchar(1),
@rTemp varchar(10),
@rTempStr varchar(100)

--start1
--如果存在判斷存入數據是否合格
--查找當前列，是否存在
SELECT @rTemp=len(COLUMNPROPERTY( OBJECT_ID(@inTableName),@inColumnName,'PRECISION'))
if(@rTemp > 0)
begin
select @rColumnName=a.name from syscolumns a,systypes b where a.id =object_id(@inTableName) and a.xtype = b.xtype and a.name=@inColumnName
select @rColumnNullStatus=case a.isnullable when 1 then 'Y' else 'N' end from syscolumns a,systypes b where a.id =object_id('publicnotice') and a.xtype = b.xtype and a.name=@inColumnName
select @rColumnType=b.name from syscolumns a,systypes b where a.id =object_id(@inTableName) and a.xtype = b.xtype and a.name=@inColumnName
select @rColumnByte=a.length from syscolumns a,systypes b where a.id =object_id(@inTableName) and a.xtype = b.xtype and a.name=@inColumnName
--‘H’是中文判斷
if(upper(@flag) ='H')
begin
if(len(@lenContent) > @rColumnByte/2)
begin
set @rTempStr = ('出錯提示:列('+ @rColumnName + ') 類型是 ' + @rColumnType + ' 可存儲(' + cast(@rColumnByte/2 as varchar(10)) + ')個漢字' + ' 可否為空 ' + @rColumnNullStatus)
end
else
begin
set @rTempStr = 'Y'
end
end
else
--其他默認為英文
begin
if(len(@lenContent) > @rColumnByte)
begin
set @rTempStr = ('出錯提示:列('+ @rColumnName + ') 類型是(' + @rColumnType + ') 可存儲(' + cast(@rColumnByte as varchar(10)) + ')個字符' + ' 可否為空(' + @rColumnNullStatus + ')')
end
else
begin
set @rTempStr = 'Y'
end
end
end
else
begin
set @rTempStr =( '(' + @inColumnName + ') 是無效列')
end

--start1End

--start2,用臨時表得到數據
create table #temTable (result varchar(100))
insert into #temTable values(@rTempStr)
select * from #temTable

--start2End