Server System Variables Type Numeric Default Value UNIX_TIMESTAMP() Minimum Value 1 Maximum Value 2147483647 Set the time for this client. This is used to get the original timestamp if you use the binary log to restore rows.  timestamp_value  should be a Unix epoch timestamp (a value like that returned by UNIX_TIMESTAMP() , not a value in  ’ YYYY-MM-DD hh:mm:ss ’  format) or  DEFAULT . Setting  timestamp  to a constant value causes it to retain that value until it is changed again. Setting timestamp  to  DEFAULT  causes its value to be the current date and time as of the time it is accessed. timestamp  is a  DOUBLE  rather than  BIGINT  because its value includes a microseconds part. The maximum value corresponds to  ’2038-01-19 03:14:07’  UTC, the same as for the  TIMESTAMP  data type. SET timestamp  affects the value returned by  NOW()  but not by  SYSDATE() . This means that timestamp settings in the binary log have no effect on invocations of  SYSDATE() . The server can be started with the  --sysdate-is-now  option to cause  SYSDATE()  to be a synonym for  NOW() , in which case  SET timestamp  affects both functions. Which ciphersuites the server permits for encrypted connections that use TLSv1.3. The value is a list of zero or more colon-separated ciphersuite names. The ciphersuites that can be named for this variable depend on the SSL library used to compile MySQL. If this variable is not set, its default value is  NULL , which means that the server permits the default set of ciphersuites. If the variable is set to the empty string, no ciphersuites are enabled and encrypted connections cannot be established. For more information, see Section 6.3.2, “Encrypted Connection TLS Protocols and Ciphers” . Command-Line Format --tls-ciphersuites=ciphersuite_list Introduced 8.0.16 System Variable tls_ciphersuites Scope Global Dynamic Yes SET_VAR  Hint Applies No Type String Default Value NULL Command-Line Format --tls-version=protocol_list System Variable tls_version Scope Global Dynamic ( ≥  8.0.16) Yes Dynamic ( ≤  8.0.15) No SET_VAR  Hint Applies No • tls_version • tls_ciphersuites 907