CreateQuery test (children 3)
 Identifier test
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration str (children 1)
    DataType String
   ColumnDeclaration column_with_codec (children 2)
    DataType String
    Function CODEC (children 1)
     ExpressionList (children 1)
      Function ZSTD
   ColumnDeclaration column_with_alias (children 2)
    DataType String
    Function concat (children 1)
     ExpressionList (children 2)
      Identifier str
      Literal \'a\' (alias a)
 Storage definition (children 2)
  Function MergeTree (children 1)
   ExpressionList
  Function tuple (children 1)
   ExpressionList