On 1/24/22 00:16, Corey Huinker wrote: >> - Table schemas change, and all (SV active) AV items would logically >> need to fit the active schema or be updated to do so. Different story >> for SV, nothing there should ever need to be changed. >> > Yeah, there's a mess (which you state below) about what happens if you > create a table and then rename a column, or drop a column and add a > same-named column back of another type at a later date, etc. In theory, > this means that the valid set of columns and their types changes according > to the time range specified. I may not be remembering correctly, but Vik > stated that the SQL spec seemed to imply that you had to track all those > things.
The spec does not allow schema changes at all on a a system versioned table, except to change the system versioning itself. -- Vik Fearing