Oracle替换字符串

Question

我的数据如下所示。

ColumnA

APX-0150004-225 02A,APX-0150004-234 02A 

APX-0170009-001 04C,APX-0170021-002 04C,APX-0170021-004 02R

APX-0170012-001 04C,APX-0170012-002 02R,APX-0170021-003 04C,APX-0170021-005 01R

我想在逗号前用替换每三个字符，输出应如下所示

ColumnA

APX-0150004-225 ,APX-0150004-234

APX-0170009-001 ,APX-0170021-002 ,APX-0170021-004

APX-0170012-001 ,APX-0170012-002 ,APX-0170021-003 ,APX-0170021-005

Answer 1

Oracle安装程序：

CREATE TABLE table_name ( ColumnA ) AS
SELECT 'APX-0150004-225 02A,APX-0150004-234 02A' FROM DUAL UNION ALL
SELECT 'APX-0170009-001 04C,APX-0170021-002 04C,APX-0170021-004 02R' FROM DUAL UNION ALL
SELECT 'APX-0170012-001 04C,APX-0170012-002 02R,APX-0170021-003 04C,APX-0170021-005 01R' FROM DUAL;

<强>查询：

SELECT REGEXP_REPLACE( ColumnA, '[^,]{3}(,|$)', '\1' ) AS ColumnA
FROM   table_name

<强>输出：

COLUMNA
------------------------------------------------------------------
APX-0150004-225 ,APX-0150004-234
APX-0170009-001 ,APX-0170021-002 ,APX-0170021-004
APX-0170012-001 ,APX-0170012-002 ,APX-0170021-003 ,APX-0170021-005