CreateQuery 02563_db t_1 (children 4)
 Identifier 02563_db
 Identifier t_1
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration timestamp (children 1)
    DataType DateTime64 (children 1)
     ExpressionList (children 1)
      Literal UInt64_9
   ColumnDeclaration a (children 1)
    DataType String
   ColumnDeclaration b (children 1)
    DataType String
 Storage definition (children 3)
  Function MergeTree
  Function formatDateTime (children 1)
   ExpressionList (children 3)
    Function toStartOfMinute (children 1)
     ExpressionList (children 1)
      Identifier timestamp
    Literal \'%Y%m%d%H\'
    Literal \'UTC\'
  Function tuple (children 1)
   ExpressionList (children 3)
    Identifier timestamp
    Identifier a
    Identifier b
