CreateQuery table_with_pk_clear (children 3)
 Identifier table_with_pk_clear
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration key1 (children 1)
    DataType UInt64
   ColumnDeclaration key2 (children 1)
    DataType String
   ColumnDeclaration value1 (children 1)
    DataType String
   ColumnDeclaration value2 (children 1)
    DataType String
 Storage definition (children 2)
  Function MergeTree (children 1)
   ExpressionList
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier key1
    Identifier key2