Update column in postgreSQL first letter capital

Question

How to update column in postgreSQL and set only first character capital?

Eg. TEST ---> Test

I tried, but not working

UPDATE car SET carName=UPPER(LEFT(carName,1)) + LOWER(SUBSTRING(carName,2,LEN(carName)))

Answer 1

It should not be a problem:

postgres=# select * from f10;
+--------+
|   a    |
+--------+
| nazdar |
+--------+
(1 row)

postgres=# update f10 set a = upper(substring(a from 1 for 1)) || lower(substring(a from 2));
UPDATE 1
postgres=# select * from f10;
+--------+
|   a    |
+--------+
| Nazdar |
+--------+
(1 row)

Maybe you can use initcap functions too:

postgres=# select initcap('hello world');
+-------------+
|   initcap   |
+-------------+
| Hello World |
+-------------+
(1 row)