CreateQuery t_index (children 3)
 Identifier t_index
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration a (children 1)
    DataType int
   ColumnDeclaration b (children 1)
    DataType String
 Storage definition (children 2)
  Function ReplicatedMergeTree (children 1)
   ExpressionList (children 2)
    Literal \'/test/2319/{database}\'
    Literal \'1\'
  Identifier a
