更新postgresql首字母大写的列

这不应该是个问题:

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)

也许你可以用 initcap 功能也:

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