Question

Let’s say that I have the table below:

| Cod | Name

| 0 |

| 1 |

| 2 |

| 3 |

| 4 |

What I want is to fill name column with “Name” + Cod, like this:

| Cod | Name

| 0 | Name0

| 1 | Name1

| 2 | Name2

| 3 | Name3

| 4 | Name4

It’s for testing.

Answer 1

SELECT "Cod", 'Name'||CAST("Cod" AS varchar) AS "Name"
  FROM table;

If you already have column Name, just update:

UPDATE table SET "Name" = 'Name'||CAST("Cod" AS varchar);

Note, that you have to double-quote identifiers if you want to keep them as is (capitalized), otherwise they all are transfered to lowercase by PostgreSQL.