① sql2017如何导出数据表
通过自带的导出
通过navicat工具连接上后导出
② 如何查看并导出SQLSERVER数据表中字段的注释信息
sysobjects是系统对象表，syscolumns是系统字段信息表，systypes是系统类型表。通过字段的ID和sysproperties（系统注释属性表）关联，即可读出注释信息。
③ 怎么导出 sql 表里所有数据
cmd打开 c:\>mysqlmp -h localhost -u root -p mydb >e:\mysql\mydb.sql然后输入密码，等待一会导出就成功了，可以到目标文件中检查是否成功。2.将数据库mydb中的mytable导出到e:\mysql\mytable.sql文件中：c:\>mysqlmp -h localhost -u root -p mydb mytable>e:\mysql\mytable.sql
④ 怎么导出sql所有用户表的字段信息
请使用这样一条Sql语句，试试吧！
SELECT
(case when a.colorder=1 then d.name else '' end)表名,
a.colorder 字段序号,
a.name 字段名,
(case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end) 标识,
(case when (SELECT count(*)
FROM sysobjects
WHERE (name in
(SELECT name
FROM sysindexes
WHERE (id = a.id) AND (indid in
(SELECT indid
FROM sysindexkeys
WHERE (id = a.id) AND (colid in
(SELECT colid
FROM syscolumns
WHERE (id = a.id) AND (name = a.name))))))) AND
(xtype = 'PK'))>0 then '√' else '' end) 主键,
b.name 类型,
a.length 占用字节数,
COLUMNPROPERTY(a.id,a.name,'PRECISION') as 长度,
isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0) as 小数位数,
(case when a.isnullable=1 then '√'else '' end) 允许空,
isnull(e.text,'') 默认值,
isnull(g.[value],'') AS 字段说明
FROM syscolumns a left join systypes b
on a.xtype=b.xusertype
inner join sysobjects d
on a.id=d.id and d.xtype='U' and d.name<>'dtproperties'
left join syscomments e
on a.cdefault=e.id
left join sysproperties g
on a.id=g.id AND a.colid = g.smallid
order by a.id,a.colorder
⑤ 怎么将sql数据库表里的信息 导成sql语句
我用的是2008,选中数据库_任务(右键)_生成脚本(右键).截图附上,不明白的可以直接hi我.其他的版本也是大同小异的.
⑥ 如何SQL语句导出数据库里的所有表（SQL2012）
新建一个备份库，将bak文件还原
然后excel中直接连接数据库
⑦ sql怎样导出一个表里部分数据
现有员工表A一张 ，要求抽取员工表中年纪小于25的数据单独存于B表
A表结构：
id、name、age
sql语法：
create table B as select id,name,age from A where age<25
不知是不是你要的效果！
⑧ 怎么导出SQL所有用户表的字段信息
请使用这样一条Sql语句，试试吧！ SELECT (case when a.colorder=1 then d.name else '' end)表名, a.colorder 字段序号, a.name 字段名, (case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end) 标识, (case when (SELECT count(*) FROM sysobjects WHERE (name in (SELECT name FROM sysindexes WHERE (id = a.id) AND (indid in (SELECT indid FROM sysindexkeys WHERE (id = a.id) AND (colid in (SELECT colid FROM syscolumns WHERE (id = a.id) AND (name = a.name))))))) AND (xtype = 'PK'))>0 then '√' else '' end) 主键, b.name 类型, a.length 占用字节数, COLUMNPROPERTY(a.id,a.name,'PRECISION') as 长度, isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0) as 小数位数, (case when a.isnullable=1 then '√'else '' end) 允许空, isnull(e.text,'') 默认值, isnull(g.[value],'') AS 字段说明 FROM syscolumns a left join systypes b on a.xtype=b.xusertypeinner join sysobjects d on a.id=d.id and d.xtype='U' and d.name'dtproperties'left join syscomments eon a.cdefault=e.idleft join sysproperties gon a.id=g.id AND a.colid = g.smallid order by a.id,a.colorder
⑨ SQL导出表数据：通过写什么命令可以把SQL里面查询到的表数据导出到txt或者Excel当中
循环列名，然后用写入（追加）到txt中。