Oracle cursor for updating every row in same table

Oracle cursor for updating every row in same table

There can be a situation where you have to use a cursor, even though the experts say not to use cursors or to avoid them as much as possible.But if you look closely, most of the time we use cursors to iterate through a row collection and update the same table.

You may wish to update records in one table based on values in another table.(This does not occur with tables using storage engines such as PDF (US Ltr) - 37.9Mb PDF (A4) - 38.0Mb PDF (RPM) - 37.3Mb HTML Download (TGZ) - 10.3Mb HTML Download (Zip) - 10.3Mb HTML Download (RPM) - 8.9Mb Man Pages (TGZ) - 216.8Kb Man Pages (Zip) - 329.6Kb Info (Gzip) - 3.4Mb Info (Zip) - 3.4Mb My SQL Backup and Recovery My SQL Globalization My SQL Information Schema My SQL Installation Guide My SQL and Linux/Unix My SQL and OS X My SQL Partitioning My SQL Performance Schema My SQL Replication Using the My SQL Yum Repository My SQL Restrictions and Limitations Security in My SQL My SQL and Solaris Building My SQL from Source Starting and Stopping My SQL My SQL Tutorial My SQL and Windows My SQL NDB Cluster 7.5 Having the same problem mentioned above (last_insert_id() returns "0"), I found this solution.You can use the following select statement: SELECT id FROM mytable WHERE id IS NULL;"id" has to be an auto_increment column to make it [email protected]_horse_with_no_name: Oracle does not directly support the JOIN keyword in an UPDATE, but it allows UPDATE involving JOIN operations between table in at least 2 different ways, look at the accepted answer here: stackoverflow.com/questions/2446764/…You could create a trigger on table B that updates table A every time field_2 on table B is updated.

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