SELECT 语句用于从数据库中选取数据。
SQL SELECT 语句 #
SELECT 语句用于从数据库中选取数据。
结果被存储在一个结果表中，称为结果集。
SQL SELECT 语法
SELECT column_name,column_name FROM table_name;
与
SELECT * FROM table_name;
SELECT Column 实例 #
下面的 SQL 语句从 “domains” 表中选取 “domainname” 和 “icp” 列：
实例
MariaDB [learnsql]> select domainname,icp from domains;
+------------------+-----------+
| domainname | icp |
+------------------+-----------+
| aisoc.cn | west.cn |
| ado.ink | west.cn |
| nrdoc.com | west.cn |
| getos.org | namesilo |
| litiaotiao.cn | west.cn |
| dotbbq.com | wanwang |
| lyq.wiki | wanwang |
| les.moe | namesilo |
| regex.in | namesilo |
| wmts.top | west.cn |
| sharpbang.cn | west.cn |
| blbl.dev | namesilo |
| raspi.in | namesilo |
| pornie.in | namesilo |
| aosp.me | namesilo |
| bailuyuan.org | namesilo |
| linuxuc.com | wanwang |
| ustv.xyz | namesilo |
| unixetc.com | wanwang |
| ciux.org | namesilo |
| avlist.top | namesilo |
| suopo.net | google |
| vbar.xyz | west.cn |
| ltecn.com | namesilo |
| pornie.top | namesilo |
| sjcs.top | west.cn |
| imagemagick.top | west.cn |
| oppa.top | west.cn |
| kodis.top | west.cn |
| vpshz.top | west.cn |
| smdm.top | west.cn |
| commandline.top | west.cn |
| wxtx.top | west.cn |
| kjzx.top | west.cn |
| aido.cc | west.cn |
| ustv.top | west.cn |
| colorhexcode.top | west.cn |
| rgbs.top | west.cn |
| autohotkey.top | west.cn |
| opensuse.top | west.cn |
| qgis.top | west.cn |
| hugotheme.top | west.cn |
| zjq.xyz | dnspod.cn |
| alair.cn | dnspod.cn |
| ymqd.net | dnspod.cn |
| nasplus.cn | dnspod.cn |
| manjushri.cn | dnspod.cn |
| pushto.cn | dnspod.cn |
| gfwlist.cn | dnspod.cn |
| byhzg.cn | dnspod.cn |
| guwendaquan.cn | west.cn |
| mua.wiki | gandi.net |
+------------------+-----------+
52 rows in set (0.001 sec)
SELECT * 实例 #
下面的 SQL 语句从 “domains” 表中选取所有列：
实例
MariaDB [learnsql]> select * from domains;
+----+-----------+------------------+------------+------------+
| ID | ICP | DomainName | RegDate | EndDate |
+----+-----------+------------------+------------+------------+
| 1 | west.cn | aisoc.cn | 2021/8/17 | 2022/8/17 |
| 2 | west.cn | ado.ink | 2020/8/22 | 2022/8/22 |
| 3 | west.cn | nrdoc.com | 2021/9/7 | 2022/9/7 |
| 4 | namesilo | getos.org | 2016/10/9 | 2022/10/9 |
| 5 | west.cn | litiaotiao.cn | 2021/10/9 | 2022/10/9 |
| 6 | wanwang | dotbbq.com | 2017/10/28 | 2022/10/28 |
| 7 | wanwang | lyq.wiki | 2018/12/27 | 2022/12/28 |
| 8 | namesilo | les.moe | 2015/12/31 | 2022/12/31 |
| 9 | namesilo | regex.in | 2020/1/3 | 2023/1/3 |
| 10 | west.cn | wmts.top | 2021/1/11 | 2023/1/11 |
| 11 | west.cn | sharpbang.cn | 2022/1/12 | 2023/1/12 |
| 12 | namesilo | blbl.dev | 2020/1/17 | 2023/1/17 |
| 13 | namesilo | raspi.in | 2014/2/27 | 2023/2/27 |
| 14 | namesilo | pornie.in | 2016/3/10 | 2023/3/10 |
| 15 | namesilo | aosp.me | 2016/3/17 | 2023/3/17 |
| 16 | namesilo | bailuyuan.org | 2017/3/23 | 2023/3/23 |
| 17 | wanwang | linuxuc.com | 2016/3/24 | 2023/3/24 |
| 18 | namesilo | ustv.xyz | 2018/3/24 | 2023/3/25 |
| 19 | wanwang | unixetc.com | 2017/3/30 | 2023/3/30 |
| 20 | namesilo | ciux.org | 2010/4/26 | 2023/4/26 |
| 21 | namesilo | avlist.top | 2021/6/5 | 2023/6/5 |
| 22 | google | suopo.net | 2020/6/17 | 2023/6/17 |
| 23 | west.cn | vbar.xyz | 2020/7/20 | 2023/7/20 |
| 24 | namesilo | ltecn.com | 2014/7/26 | 2025/7/26 |
| 25 | namesilo | pornie.top | 2016/3/10 | 2027/3/10 |
| 26 | west.cn | sjcs.top | 2017/9/5 | 2027/9/5 |
| 27 | west.cn | imagemagick.top | 2017/10/24 | 2027/10/24 |
| 28 | west.cn | oppa.top | 2015/12/29 | 2027/12/29 |
| 29 | west.cn | kodis.top | 2018/1/25 | 2028/1/25 |
| 30 | west.cn | vpshz.top | 2018/7/18 | 2028/7/18 |
| 31 | west.cn | smdm.top | 2018/9/10 | 2028/9/10 |
| 32 | west.cn | commandline.top | 2020/10/21 | 2029/10/21 |
| 33 | west.cn | wxtx.top | 2020/8/11 | 2030/8/11 |
| 34 | west.cn | kjzx.top | 2020/8/16 | 2030/8/16 |
| 35 | west.cn | aido.cc | 2020/9/22 | 2030/9/22 |
| 36 | west.cn | ustv.top | 2020/10/13 | 2030/10/13 |
| 37 | west.cn | colorhexcode.top | 2021/1/27 | 2031/1/27 |
| 38 | west.cn | rgbs.top | 2021/2/25 | 2031/2/25 |
| 39 | west.cn | autohotkey.top | 2021/3/3 | 2031/3/3 |
| 40 | west.cn | opensuse.top | 2021/3/25 | 2031/3/25 |
| 41 | west.cn | qgis.top | 2021/8/23 | 2031/8/23 |
| 42 | west.cn | hugotheme.top | 2022/2/18 | 2032/2/18 |
| 43 | dnspod.cn | zjq.xyz | 2021-08-06 | 2022-10-24 |
| 44 | dnspod.cn | alair.cn | 2021-08-06 | 2022-12-10 |
| 45 | dnspod.cn | ymqd.net | 2022-01-28 | 2023-03-03 |
| 46 | dnspod.cn | nasplus.cn | 2022-01-28 | 2023-03-08 |
| 47 | dnspod.cn | manjushri.cn | 2022-01-28 | 2023-03-11 |
| 48 | dnspod.cn | pushto.cn | 2022-01-28 | 2023-03-12 |
| 49 | dnspod.cn | gfwlist.cn | 2022-01-28 | 2023-03-23 |
| 50 | dnspod.cn | byhzg.cn | 2022-01-28 | 2023-04-14 |
| 51 | west.cn | guwendaquan.cn | 2022/6/9 | 2023/6/9 |
| 52 | gandi.net | mua.wiki | 2022/7/19 | 2023/7/19 |
+----+-----------+------------------+------------+------------+
52 rows in set (0.000 sec)