CreateQuery test_table (children 3)
 Identifier test_table
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration key (children 1)
    DataType UInt32
   ColumnDeclaration A (children 1)
    DataType UInt32
   ColumnDeclaration B (children 1)
    DataType String
 Storage definition (children 2)
  Function CoalescingMergeTree (children 1)
   ExpressionList
  Identifier key
