删除PL/SQL中整列的第一个字符

Question

I have a problem with deleting first character in a one column of my table and updating my table with new values. I wanna do it in on query (remove first character in string in one column and update table). Anyone can help?

My table:

ID | column1 | column2
L12| 5       | 10
L14| 6       | 12

My desired output:

ID | column1 | column2
12| 5       | 10
14| 6       | 12

Answer 1

A simple update with substr :

Before:

SQL> select * from your_table;

ID     COLUMN1    COLUMN2
--- ---------- ----------
L12          5         10
L14          6         12

Update:

SQL> update your_table set
  2    id = substr(id, 2);

2 rows updated.

After:

SQL> select * from your_table;

ID     COLUMN1    COLUMN2
--- ---------- ----------
12           5         10
14           6         12

SQL>