CreateQuery tt_m (children 3)
 Identifier tt_m
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration a (children 1)
    DataType UInt32
   ColumnDeclaration b (children 1)
    DataType UInt32
 Storage definition (children 1)
  Function Merge (children 1)
   ExpressionList (children 2)
    Function currentDatabase (children 1)
     ExpressionList
    Literal \'tt1|tt2|tt3|tt4\'
