actor.actor_surname, hall.cinemahall_number, schedule.schedule_date FROM film flm JOIN movieschedule schedule ON (flm.film_id = schedule.schedule_filmid) JOIN cinemahall hall ON (schedule.schedule_hallid = hall.cinemahall_id) JOIN Film Actor filmactor ON (flm.film_id = filmactor.filmactor_filmid) JOIN Actor actor ON (actor.actor_id = filmactor.filmactor_actorid); Error starting at line 312 in command: UPDATE FILMDETAILSVIEW SET ACTOR_FULLNAME = 'a' WHERE HALL_NUMBER = 1 Error at Command Line:313 Column:4 Error report: SQL Error: ORA-01733: virtual column not allowed here 01733.
00000 - "virtual column not allowed here" *Cause: *Action: Because the view contains a virtual column (and other reasons as well) Oracle will not allow updates to the view unless an INSTEAD OF trigger is associated with it.
For multiple-table updates, there is no guarantee that assignments are carried out in any particular order.
If you set a column to the value it currently has, My SQL notices this and does not update it.
If you update a column that has been declared , an error occurs if strict SQL mode is enabled; otherwise, the column is set to the implicit default value for the column data type and the warning count is incremented.
The implicit default value is tables for which there are foreign key constraints, the My SQL optimizer might process tables in an order that differs from that of their parent/child relationship. Instead, update a single table and rely on the provides to cause the other tables to be modified accordingly. COLUMN2 IS NULLAn outerjoin is performed based on the equijoin condition.
Your view contains a virtual column Actor_Full Name, which is a concatenation of two other real columns.
(This is because the order in which the rows are updated determines which rows are ignored.) With this change, such statements produce a warning in the log when using statement-based mode and are logged using the row-based format when using mode.The SQL UPDATE Query is used to modify the existing records in a table.You can use the WHERE clause with the UPDATE query to update the selected rows, otherwise all the rows would be affected.We recommend not updating statistics too frequently because there is a performance tradeoff between improving query plans and the time it takes to recompile queries. UPDATE STATISTICS can use tempdb to sort the sample of rows for building statistics.Transact-SQL Syntax Conventions -- Syntax for SQL Server and Azure SQL Database UPDATE STATISTICS table_or_indexed_view_name [ ] [ WITH [ FULLSCAN [ [ , ] PERSIST_SAMPLE_PERCENT = ] | SAMPLE number [ [ , ] PERSIST_SAMPLE_PERCENT = ] | RESAMPLE [ ON PARTITIONS ( [, …n] ) ] | is not specified, the query optimizer updates all statistics for the table or indexed view.