Tag: update

An SQL UPDATE statement changes the data of one or more records in a table. Either all the rows can be updated, or a subset may be chosen using a condition.
The UPDATE statement has the following form:
For the UPDATE to be successful, the user must have data manipulation privileges (UPDATE privilege) on the table or column and the updated value must not conflict with all the applicable constraints (such as primary keys, unique indexes, CHECK constraints, and NOT NULL constraints).
In some databases, such as PostgreSQL, when a FROM clause is present, what essentially happens is that the target table is joined to the tables mentioned in the fromlist, and each output row of the join represents an update operation for the target table. When using FROM, one should ensure that the join produces at most one output row for each row to be modified. In other words, a target row shouldn’t join to more than one row from the other table(s). If it does, then only one of the join rows will be used…

Windows 8 upgrade price revealed

The official launch of Microsoft Windows 8 is expected to happen soon, and Microsoft has confirmed the price for upgrading…

Ksplice is now free(for Fedora)

Ksplice Uptrack, the rebootless Linux update service, is now available for Fedora Linux. The offering, which is free of charge,…

7 LED 3DHDTV from Sony

Sony today announced that its 3D capable BRAVIA® HDTVs are now available for pre-sale at Sony Style stores and that…