CreateQuery test_block_mismatch (children 3)
 Identifier test_block_mismatch
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration a (children 1)
    DataType UInt32
   ColumnDeclaration b (children 1)
    DataType DateTime
 Storage definition (children 3)
  Function ReplacingMergeTree
  Function toYYYYMM (children 1)
   ExpressionList (children 1)
    Identifier b
  Function tuple (children 1)
   ExpressionList (children 2)
    Function toDate (children 1)
     ExpressionList (children 1)
      Identifier b
    Identifier a
