CreateQuery t_update_prewhere (children 3)
 Identifier t_update_prewhere
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration id (children 1)
    DataType UInt64
   ColumnDeclaration c1 (children 1)
    DataType UInt64
   ColumnDeclaration c2 (children 1)
    DataType UInt64
   ColumnDeclaration c3 (children 1)
    DataType UInt64
 Storage definition (children 2)
  Function MergeTree
  Identifier id
