USE
USE
USE 语句可为用户会话选择当前数据库。
语法图
UseStmt:
DBName:
示例
{{< copyable "sql" >}}
USE mysql;Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed{{< copyable "sql" >}}
SHOW TABLES;+----------------------+
| Tables_in_mysql |
+----------------------+
| GLOBAL_VARIABLES |
| bind_info |
| columns_priv |
| db |
| default_roles |
| gc_delete_range |
| gc_delete_range_done |
| help_topic |
| role_edges |
| stats_buckets |
| stats_feedback |
| stats_histograms |
| stats_meta |
| tables_priv |
| tidb |
| user |
+----------------------+
16 rows in set (0.00 sec){{< copyable "sql" >}}
CREATE DATABASE newtest;Query OK, 0 rows affected (0.10 sec){{< copyable "sql" >}}
USE newtest;Database changed{{< copyable "sql" >}}
SHOW TABLES;Empty set (0.00 sec){{< copyable "sql" >}}
CREATE TABLE t1 (a int);Query OK, 0 rows affected (0.10 sec){{< copyable "sql" >}}
SHOW TABLES;+-------------------+
| Tables_in_newtest |
+-------------------+
| t1 |
+-------------------+
1 row in set (0.00 sec)MySQL 兼容性
USE 语句与 MySQL 完全兼容。如有任何兼容性差异，请在 GitHub 上提交 issue。