sql float 转 varchar
SELECT CONVERT(varchar(100), CAST(@testFloat AS decimal(38,2)))
SELECT STR(@testFloat, 38, 2)
从Excel中导入到sql2000，有一列“联系方式”变成了float类型，我想转换成nvarchar类型，用下面的语句
select convert(nvarchar(30),convert(int,联系方式)) from employee
go
//数据溢出，不行！
select convert(nvarchar(30),convert(decimal(11,0),联系方式)) from employee
go
//数据转换成功！
SELECT CONVERT(nvarchar(100), CAST(联系方式 AS decimal(11,0))) from employee
go
//数据转换成功！
SELECT STR(联系方式, 11, 0)from employee
go
//数据转换成功！
总结，float---decimal----nvarchar
convert
cast
str
参考：http://www.itwis.com/html/database/sqlserver/20090828/5827.html
相关文档：
create PROCEDURE pagelist
@tablename nvarchar(50),
@fieldname nvarchar(50)='*',
@pagesize int output,--每页显示记录条数
@currentpage int output,--第几页
@orderid nvarchar(50),--主键排序
@sort int,--排序方式，1表示升序，0表示降序排列
......
数据类型
存储尺寸
描述
bigint
8 bytes
integer
4 bytes
smallint
2 bytes
tinyint
1 byte
bit
1 byte
numeric(p,s)
decimal(p,s)
dec(p,s)
19 bytes
money
8 bytes
float
8 bytes
real
4 bytes
datetime
8 bytes
nvarchar(n)
2*长度 bytes
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SELECT WorkerSortID, SUM(WorkerCount) AS WorkerMothCount
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如何远程判断Oracle数据库的安装平台
select * from v$version;
查看表空间的使用情况
select sum(bytes)/(1024*1024) as free_space,tablespace_name
from dba_free_space
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SELECT A.TABLESPACE_NAME,A.BYTES TOTAL,B.BYTES USED, C.BYTES FREE,
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