51 lines
1.0 KiB
Markdown
51 lines
1.0 KiB
Markdown
---
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title: User Management
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---
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A system operator can use TDengine CLI `taos` to create or remove users or change passwords. The SQL commands are documented below:
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## Create User
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```sql
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CREATE USER <user_name> PASS <'password'>;
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```
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When creating a user and specifying the user name and password, the password needs to be quoted using single quotes.
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## Drop User
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```sql
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DROP USER <user_name>;
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```
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Dropping a user can only be performed by root.
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## Change Password
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```sql
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ALTER USER <user_name> PASS <'password'>;
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```
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To keep the case of the password when changing password, the password needs to be quoted using single quotes.
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## Change Privilege
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```sql
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ALTER USER <user_name> PRIVILEGE <write|read>;
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```
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The privileges that can be changed to are `read` or `write` without single quotes.
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Note：there is another privilege `super`, which is not allowed to be authorized to any user.
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## Show Users
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```sql
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SHOW USERS;
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```
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:::note
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In SQL syntax, `< >` means the part that needs to be input by the user, excluding the `< >` itself.
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:::
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