SchemaBinding and Temporal Tables

  • I have schema bound a view to a temporal (system-versioned) table and receive no errors in doing do. However, I am able to delete/modify columns from the temporal table, without issue. When I do a query against the view, it fails with a binding error. Has anyone else tried this? Should it work?

    BTW...on the same database, if the table is not temporal (system-versioned) and I try to delete the column, I get the expected error from SQL.

    AtDhVaAnNkCsE for any assistance.

     

  • Thanks for posting your issue and hopefully someone will answer soon.

    This is an automated bump to increase visibility of your question.

  • Hello Dandschul

    Sorry, can not reproduce your problem.  SQL used follows.  Error message produced, as expected:

    Msg 5074, Level 16, State 1, Line 29
    The object 'my_view' is dependent on column 'my_column_1'.
    Msg 4922, Level 16, State 9, Line 29
    ALTER TABLE DROP COLUMN my_column_1 failed because one or more objects access this column.

    Can you give a simple example that illustrates your problem?  Does SQL below fail in your environment?  Thanks.  Bredon

    SQL for test:

    create table dbo.my_table
    (
    my_idinteger identity(1,1) not null primary key,
    my_column_1 varchar(12) not null,
    my_column_2 decimal(10,3) not null,
    valid_from datetime2 generated always as row start,
    valid_to datetime2 generated always as row end,
    period for system_time (valid_from, valid_to)
    ) with (system_versioning = on (history_table = dbo.my_table_history));
    go
    insert into dbo.my_table(my_column_1,my_column_2)
    values ('abc',9.1),('def',10.1),('ghi',11.1);
    go
    create view dbo.my_view with schemabinding as
    select my_id,my_column_1,my_column_2 from dbo.my_table;
    go
    select * from dbo.my_view;
    go
    alter table dbo.my_table drop column my_column_1;

     

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