Assuming that all foreign keys have the appropriate constraint, is there a simple SQL statement to delete rows not referenced anywhere开发者_运维知识库 in the DB?
I have two tables called TableA and TableB. TableA has the following fields: TableA_ID FileName TableB has the following fields:
How do I go about deleting a row that is referenced by many 开发者_StackOverflow中文版other tables, either as a primary key or as a foreign key?
I keep getting these errors when trying to delete rows from a table. The special case here is that I may be running 5 processes at the same time.
so basically here\'s what I want to do: I have an account table, I have a list of acct_id: (3, 24, 515, 6326, 17), assuming I have about 100,000 accounts in the table, what\'s the most effective way t
I have a开发者_StackOverflow中文版 database table that has >14 million rows. If I attempt to perform:
In PostgreSQL 8.3, let\'s say I have a table called widgets with the following: id| type | count --------------------
I understand I can map a delete stored procedure to the delete method for a particular type. However, this requires passing in a retrieved object to my context\'s DeleteObject method.
I want to be able to wrap a gridview row delete in a try catch and display a nice error message on the screen or try to stop the delete from happening in certain circumstances.
To delete all the rows in a table, I am currently doing the following: context.Entities.DeleteAllOnSubmit(context.Entities);
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