CreateQuery events (children 3)
 Identifier events
 Columns definition (children 2)
  ExpressionList (children 7)
   ColumnDeclaration organisation_id (children 1)
    DataType UUID
   ColumnDeclaration session_id (children 1)
    DataType UUID
   ColumnDeclaration id (children 2)
    DataType UUID
    Function generateUUIDv4 (children 1)
     ExpressionList
   ColumnDeclaration timestamp (children 1)
    DataType UInt64
   ColumnDeclaration payload (children 1)
    DataType String
   ColumnDeclaration customer_id (children 1)
    DataType UUID
   ColumnDeclaration call_id (children 1)
    DataType String
  ExpressionList (children 4)
   Projection (children 1)
    ProjectionSelectQuery (children 2)
     ExpressionList (children 1)
      Asterisk
     Function tuple (children 1)
      ExpressionList (children 3)
       Identifier organisation_id
       Identifier session_id
       Identifier timestamp
   Projection (children 1)
    ProjectionSelectQuery (children 2)
     ExpressionList (children 1)
      Asterisk
     Function tuple (children 1)
      ExpressionList (children 2)
       Identifier session_id
       Identifier timestamp
   Projection (children 1)
    ProjectionSelectQuery (children 2)
     ExpressionList (children 1)
      Asterisk
     Function tuple (children 1)
      ExpressionList (children 3)
       Identifier customer_id
       Identifier session_id
       Identifier timestamp
   Projection (children 1)
    ProjectionSelectQuery (children 2)
     ExpressionList (children 1)
      Asterisk
     Function tuple (children 1)
      ExpressionList (children 2)
       Identifier call_id
       Identifier timestamp
 Storage definition (children 3)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList (children 3)
    Identifier organisation_id
    Identifier session_id
    Identifier timestamp
  Set
