2023-10-10 mysql-{mysql_create_db}-失败后回滚-记录

摘要:

2023-10-10 mysql-{mysql_create_db}-失败后回滚-记录

mysql_create_db

完整函数代码:

 
/**
  Create a database
  @param thd		Thread handler
  @param db		Name of database to create
                        Function assumes that this is already validated.
  @param create_info	Database create options (like character set)
  SIDE-EFFECTS
   1. Report back to client that command succeeded (my_ok)
   2. Report errors to client
   3. Log event to binary log
  @retval false ok
  @retval true  Error
*/
 
bool mysql_create_db(THD *thd, const char *db, HA_CREATE_INFO *create_info) {
  DBUG_TRACE;
 
  /*
    Use Auto_releaser to keep uncommitted object for database until
    trans_commit() call.
  */
  dd::cache::Dictionary_client::Auto_releaser releaser(thd->dd_client());
 
  // Reject creation of the system schema except for system threads.
  if (!thd->is_dd_system_thread() &&a