Updating table in dbi perl


Summary: in this tutorial, we will show you step by step how to update data in My SQL table by using Perl DBI.To update data in a table, you use the UPDATE statement.Therefore, some knowledge of both Oracle and Perl is assumed, and although I will not try to show off my obfuscation abilities, this article still assumes that the reader has read "Learning Perl" and has some experience with Oracle RDBMS.

A more effective solution to this problem is to attempt to reduce the number of UPDATE statements.SELECT * FROM example_timestamp; ---- -------------------------- --------------------- | id | data | cur_timestamp | ---- -------------------------- --------------------- | 1 | The time of creation is: | 2004-12-01 | ---- -------------------------- --------------------- 1 row in set (0.00 sec)mysql SELECT * FROM example_timestamp; ---- --------------------------- --------------------- | id | data | cur_timestamp | ---- --------------------------- --------------------- | 1 | The current timestamp is: | 2004-12-01 | ---- --------------------------- --------------------- 1 row in set (0.01 sec) retains its initial value and is not changed during subsequent updates.For versions prior to 4.1, the only workaround is to create two timestamp columns in a table, and explicitly set the second one when inserting the record.The advice I’m giving here is directed at single-partition databases with non-partitioned tables. It consists of: Reorgchk is a DB2 utility that calculates a number of formulas to determine what kinds of reorgs are needed on what tables.You can run reorgchk on a single table, on a schema, or on all tables in a database.Reorgs are one critical piece of both performance maintenance and maintaining how much disk space is used.

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