Given the simple example as provided in the documentation provided (see https://www.ktorm.org/en/query.html)

val query = database.from(Employees).select()

query
    .map { row -> Emp(row[Employees.id], row[Employees.name], row[Employees.salary]) }

this will actually generate a label per row per column in order to access the element in the table via call stack of:

QueryRowSet.get(Column)
Column.getLabel()
Column.toString("_")

however, this getter initializes a string on every instance, so if you have 1000 rows, this will generate 1000 strings x the number of columns that are all the same for every call.

Alternative approaches

• Initialize the string when initializing the Column itself (not using lazy)
• Use lazy with a different synchronization mode

As always, thanks for reading and maintaining the library!