CreateQuery test_generic_events_all (children 3)
 Identifier test_generic_events_all
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration APIKey (children 1)
    DataType UInt8
   ColumnDeclaration SessionType (children 1)
    DataType UInt8
 Storage definition (children 3)
  Function MergeTree (children 1)
   ExpressionList
  Identifier APIKey
  Function tuple (children 1)
   ExpressionList