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MySQL 8.0 Reference Manual
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13.7.1.10 SET PASSWORD Syntax

SET PASSWORD [FOR user] = 'auth_string'

The SET PASSWORD statement assigns a password to a MySQL user account. 'auth_string' represents a cleartext (unencrypted) password.

Note

Rather than using SET PASSWORD ... = 'auth_string' syntax, ALTER USER syntax is the preferred statement for account alterations, including assigning passwords. For example:

ALTER USER user IDENTIFIED BY 'auth_string';
Important

Under some circumstances, SET PASSWORD may be recorded in server logs or on the client side in a history file such as ~/.mysql_history, which means that cleartext passwords may be read by anyone having read access to that information. For information about the conditions under which this occurs for the server logs and how to control it, see Section 6.1.2.3, “Passwords and Logging”. For similar information about client-side logging, see Section 4.5.1.3, “mysql Logging”.

SET PASSWORD can be used with or without a FOR clause that explicitly names a user account:

  • With a FOR user clause, the statement sets the password for the named account, which must exist:

    SET PASSWORD FOR 'jeffrey'@'localhost' = 'auth_string';
  • With no FOR user clause, the statement sets the password for the current user:

    SET PASSWORD = 'auth_string';

    Any client who connects to the server using a nonanonymous account can change the password for that account. To see which account the server authenticated you as, invoke the CURRENT_USER() function:

    SELECT CURRENT_USER();

Setting the password for a named account (with a FOR clause) requires the UPDATE privilege for the mysql database. Setting the password for yourself (for a nonanonymous account with no FOR clause) requires no special privileges. When the read_only system variable is enabled, SET PASSWORD requires the CONNECTION_ADMIN or SUPER privilege in addition to any other required privileges.

If a FOR user clause is given, the account name uses the format described in Section 6.2.4, “Specifying Account Names”. For example:

SET PASSWORD FOR 'bob'@'%.example.org' = 'auth_string';

The host name part of the account name, if omitted, defaults to '%'.

SET PASSWORD interprets the string as a cleartext string, passes it to the authentication plugin associated with the account, and stores the result returned by the plugin in the mysql.user account row. (The plugin is given the opportunity to hash the value into the encryption format it expects. The plugin may use the value as specified, in which case no hashing occurs.)

For additional information about setting passwords and authentication plugins, see Section 6.3.7, “Assigning Account Passwords”, and Section 6.3.10, “Pluggable Authentication”.


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