SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function arrayElement (children 1)
     ExpressionList (children 2)
      Identifier Settings
      Literal \'distributed_ddl_task_timeout\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.query_log
   Function and (children 1)
    ExpressionList (children 3)
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier current_database
       Function currentDatabase (children 1)
        ExpressionList
     Function notEquals (children 1)
      ExpressionList (children 2)
       Identifier type
       Literal \'QueryStart\'
     Function like (children 1)
      ExpressionList (children 2)
       Identifier query
       Literal \'CREATE DATABASE % SETTINGS %\'
