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The high part also includes the UUID version number. This function is unsafe for statement-based replication. A warning is logged if you use this function when binlog_format is set to STATEMENT. NAME_CONST(name,value) Returns the given value. This function is especially useful in multiple-row inserts. Two calls to UUID() are expected to generate two different values, even if these calls are performed on two separate devices not connected to each other. The high part also includes the UUID version number. For example, use lock names of the form db_name.str or app_name.str. If multiple clients are waiting for a lock, the order in which they will acquire it is undefined.