CreateQuery test_collation (children 3)
 Identifier test_collation
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration v (children 1)
    DataType String
   ColumnDeclaration v2 (children 1)
    DataType String
 Storage definition (children 3)
  Function MergeTree
  Identifier v
  Set