如何替换oracle数据库列中的特定值？

Question

我期待替换特定列中的值.例如,以下列值

column name
----------
Test1
Test2
Test3
Test12

应(替换est1用rest1)

column name
----------
Trest1
Test2
Test3
Trest12

Answer 1

使用REPLACE:

SELECT REPLACE(t.column, 'est1', 'rest1')
  FROM MY_TABLE t

如果要更新表中的值,请使用:

UPDATE MY_TABLE t
   SET column = REPLACE(t.column, 'est1', 'rest1')

Answer 2

如果需要更新特定表中的值:

UPDATE TABLE-NAME SET COLUMN-NAME = REPLACE(TABLE-NAME.COLUMN-NAME, 'STRING-TO-REPLACE', 'REPLACEMENT-STRING');

哪里

  TABLE-NAME         - The name of the table being updated
  COLUMN-NAME        - The name of the column being updated
  STRING-TO-REPLACE  - The value to replace
  REPLACEMENT-STRING - The replacement