Hi all,
down votefavorite <http://dba.stackexchange.com/questions/132226/unique-values-uuid-generation-postgresql-9-2#> I've got 2 tables: Temp-Table Table-A Need to copy all the data from *Temp-Table* to *Table-A*. But there is a Constraint that does not allow me to have duplicated items. So I need to create a Unique value. *Example:* Column Code | Column Info | code_67493675936 info_2016 *Question:* How can I do that using PostgreSQL 9.2?
