如何让SQL更灵活地处理插补的内容'；RR-MM-DD HH.MI.SSXFF AM'；创建[22008][1855]ORA-01855：需要上午/上午或下午/下午_Sql_Oracle

如何让SQL更灵活地处理插补的内容'；RR-MM-DD HH.MI.SSXFF AM'；创建[22008][1855]ORA-01855：需要上午/上午或下午/下午

sql oracle

如何让SQL更灵活地处理插补的内容'；RR-MM-DD HH.MI.SSXFF AM'；创建[22008][1855]ORA-01855：需要上午/上午或下午/下午,sql,oracle,Sql,Oracle,我必须用几种不同的方式输入日期 to_时间戳（'2015-10-06 0:00:00.0 AM'，'RR-MM-DD HH.MI.SSXFF AM'）及 to_时间戳（'2115-10-06 01:00:00.0 AM'，'RR-MM-DD HH.MI.SSXFF AM'）两种错误都有 ORA-01849:小时必须介于1和12之间 [22008][1855]ORA-01855:需要上午/上午或下午/下午我试图实现的是能够使用2115-10-06 01:00:00.0 am或2015-10-

我必须用几种不同的方式输入日期

to_时间戳（'2015-10-06 0:00:00.0 AM'，'RR-MM-DD HH.MI.SSXFF AM'）

及

to_时间戳（'2115-10-06 01:00:00.0 AM'，'RR-MM-DD HH.MI.SSXFF AM'）

两种错误都有

ORA-01849:小时必须介于1和12之间

[22008][1855]ORA-01855:需要上午/上午或下午/下午

我试图实现的是能够使用

2115-10-06 01:00:00.0 am

或

2015-10-06 0:00:00.0 am

而不会给我一个关于此处约束的错误

'RR-MM-DD HH.MI.SSXFF am'

一个12小时的时钟没有0小时

如果要支持第0小时作为第12小时的别名，则可以编写自定义函数以将0替换为12：

Oracle 11g R2架构设置：

CREATE FUNCTION parse_timestamp(
  in_string VARCHAR2
) RETURN TIMESTAMP
IS
  p_string    VARCHAR2(30) := in_string;
  c_fix_hours CHAR(61) := '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$';
BEGIN
  IF REGEXP_LIKE( p_string, c_fix_hours, 'i' ) THEN
    p_string := REGEXP_REPLACE( p_string, c_fix_hours, '\112\2', 1, 1, 'i' );
  END IF;
  RETURN TO_TIMESTAMP( p_string, 'RR-MM-DD HH12.MI.SSXFF AM' );
END;
/

SELECT parse_timestamp(
         '2015-10-06 0:00:00.0 AM'
       ),
       parse_timestamp(
         '2115-10-06 01:00:00.0 AM'
       )
FROM   DUAL

| PARSE_TIMESTAMP('2015-10-060:00:00.0AM') | PARSE_TIMESTAMP('2115-10-0601:00:00.0AM') |
|------------------------------------------|-------------------------------------------|
|                    2015-10-06 00:00:00.0 |                     2115-10-06 01:00:00.0 |

WITH test_data ( value ) AS (
  SELECT '2015-10-06 0:00:00.0 AM'  FROM DUAL UNION ALL
  SELECT '2115-10-06 01:00:00.0 AM' FROM DUAL UNION ALL
  SELECT '5-9-7 00:59:59.234 PM'    FROM DUAL
)
SELECT TO_TIMESTAMP(
         CASE
         WHEN REGEXP_LIKE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', 'i' )
         THEN REGEXP_REPLACE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', '\112\2', 1, 1, 'i' ) 
         ELSE value
         END,
         'RR-MM-DD HH12.MI.SSXFF AM'
       ) AS datetime
FROM   test_data

|                DATETIME |
|-------------------------|
|   2015-10-06 00:00:00.0 |
|   2115-10-06 01:00:00.0 |
| 2005-09-07 12:59:59.234 |

查询1：

CREATE FUNCTION parse_timestamp(
  in_string VARCHAR2
) RETURN TIMESTAMP
IS
  p_string    VARCHAR2(30) := in_string;
  c_fix_hours CHAR(61) := '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$';
BEGIN
  IF REGEXP_LIKE( p_string, c_fix_hours, 'i' ) THEN
    p_string := REGEXP_REPLACE( p_string, c_fix_hours, '\112\2', 1, 1, 'i' );
  END IF;
  RETURN TO_TIMESTAMP( p_string, 'RR-MM-DD HH12.MI.SSXFF AM' );
END;
/

SELECT parse_timestamp(
         '2015-10-06 0:00:00.0 AM'
       ),
       parse_timestamp(
         '2115-10-06 01:00:00.0 AM'
       )
FROM   DUAL

| PARSE_TIMESTAMP('2015-10-060:00:00.0AM') | PARSE_TIMESTAMP('2115-10-0601:00:00.0AM') |
|------------------------------------------|-------------------------------------------|
|                    2015-10-06 00:00:00.0 |                     2115-10-06 01:00:00.0 |

WITH test_data ( value ) AS (
  SELECT '2015-10-06 0:00:00.0 AM'  FROM DUAL UNION ALL
  SELECT '2115-10-06 01:00:00.0 AM' FROM DUAL UNION ALL
  SELECT '5-9-7 00:59:59.234 PM'    FROM DUAL
)
SELECT TO_TIMESTAMP(
         CASE
         WHEN REGEXP_LIKE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', 'i' )
         THEN REGEXP_REPLACE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', '\112\2', 1, 1, 'i' ) 
         ELSE value
         END,
         'RR-MM-DD HH12.MI.SSXFF AM'
       ) AS datetime
FROM   test_data

|                DATETIME |
|-------------------------|
|   2015-10-06 00:00:00.0 |
|   2115-10-06 01:00:00.0 |
| 2005-09-07 12:59:59.234 |

：

CREATE FUNCTION parse_timestamp(
  in_string VARCHAR2
) RETURN TIMESTAMP
IS
  p_string    VARCHAR2(30) := in_string;
  c_fix_hours CHAR(61) := '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$';
BEGIN
  IF REGEXP_LIKE( p_string, c_fix_hours, 'i' ) THEN
    p_string := REGEXP_REPLACE( p_string, c_fix_hours, '\112\2', 1, 1, 'i' );
  END IF;
  RETURN TO_TIMESTAMP( p_string, 'RR-MM-DD HH12.MI.SSXFF AM' );
END;
/

SELECT parse_timestamp(
         '2015-10-06 0:00:00.0 AM'
       ),
       parse_timestamp(
         '2115-10-06 01:00:00.0 AM'
       )
FROM   DUAL

| PARSE_TIMESTAMP('2015-10-060:00:00.0AM') | PARSE_TIMESTAMP('2115-10-0601:00:00.0AM') |
|------------------------------------------|-------------------------------------------|
|                    2015-10-06 00:00:00.0 |                     2115-10-06 01:00:00.0 |

WITH test_data ( value ) AS (
  SELECT '2015-10-06 0:00:00.0 AM'  FROM DUAL UNION ALL
  SELECT '2115-10-06 01:00:00.0 AM' FROM DUAL UNION ALL
  SELECT '5-9-7 00:59:59.234 PM'    FROM DUAL
)
SELECT TO_TIMESTAMP(
         CASE
         WHEN REGEXP_LIKE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', 'i' )
         THEN REGEXP_REPLACE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', '\112\2', 1, 1, 'i' ) 
         ELSE value
         END,
         'RR-MM-DD HH12.MI.SSXFF AM'
       ) AS datetime
FROM   test_data

|                DATETIME |
|-------------------------|
|   2015-10-06 00:00:00.0 |
|   2115-10-06 01:00:00.0 |
| 2005-09-07 12:59:59.234 |

更新使用

案例

语句：

查询1：

CREATE FUNCTION parse_timestamp(
  in_string VARCHAR2
) RETURN TIMESTAMP
IS
  p_string    VARCHAR2(30) := in_string;
  c_fix_hours CHAR(61) := '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$';
BEGIN
  IF REGEXP_LIKE( p_string, c_fix_hours, 'i' ) THEN
    p_string := REGEXP_REPLACE( p_string, c_fix_hours, '\112\2', 1, 1, 'i' );
  END IF;
  RETURN TO_TIMESTAMP( p_string, 'RR-MM-DD HH12.MI.SSXFF AM' );
END;
/

SELECT parse_timestamp(
         '2015-10-06 0:00:00.0 AM'
       ),
       parse_timestamp(
         '2115-10-06 01:00:00.0 AM'
       )
FROM   DUAL

| PARSE_TIMESTAMP('2015-10-060:00:00.0AM') | PARSE_TIMESTAMP('2115-10-0601:00:00.0AM') |
|------------------------------------------|-------------------------------------------|
|                    2015-10-06 00:00:00.0 |                     2115-10-06 01:00:00.0 |

WITH test_data ( value ) AS (
  SELECT '2015-10-06 0:00:00.0 AM'  FROM DUAL UNION ALL
  SELECT '2115-10-06 01:00:00.0 AM' FROM DUAL UNION ALL
  SELECT '5-9-7 00:59:59.234 PM'    FROM DUAL
)
SELECT TO_TIMESTAMP(
         CASE
         WHEN REGEXP_LIKE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', 'i' )
         THEN REGEXP_REPLACE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', '\112\2', 1, 1, 'i' ) 
         ELSE value
         END,
         'RR-MM-DD HH12.MI.SSXFF AM'
       ) AS datetime
FROM   test_data

|                DATETIME |
|-------------------------|
|   2015-10-06 00:00:00.0 |
|   2115-10-06 01:00:00.0 |
| 2005-09-07 12:59:59.234 |

：

CREATE FUNCTION parse_timestamp(
  in_string VARCHAR2
) RETURN TIMESTAMP
IS
  p_string    VARCHAR2(30) := in_string;
  c_fix_hours CHAR(61) := '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$';
BEGIN
  IF REGEXP_LIKE( p_string, c_fix_hours, 'i' ) THEN
    p_string := REGEXP_REPLACE( p_string, c_fix_hours, '\112\2', 1, 1, 'i' );
  END IF;
  RETURN TO_TIMESTAMP( p_string, 'RR-MM-DD HH12.MI.SSXFF AM' );
END;
/

SELECT parse_timestamp(
         '2015-10-06 0:00:00.0 AM'
       ),
       parse_timestamp(
         '2115-10-06 01:00:00.0 AM'
       )
FROM   DUAL

| PARSE_TIMESTAMP('2015-10-060:00:00.0AM') | PARSE_TIMESTAMP('2115-10-0601:00:00.0AM') |
|------------------------------------------|-------------------------------------------|
|                    2015-10-06 00:00:00.0 |                     2115-10-06 01:00:00.0 |

WITH test_data ( value ) AS (
  SELECT '2015-10-06 0:00:00.0 AM'  FROM DUAL UNION ALL
  SELECT '2115-10-06 01:00:00.0 AM' FROM DUAL UNION ALL
  SELECT '5-9-7 00:59:59.234 PM'    FROM DUAL
)
SELECT TO_TIMESTAMP(
         CASE
         WHEN REGEXP_LIKE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', 'i' )
         THEN REGEXP_REPLACE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', '\112\2', 1, 1, 'i' ) 
         ELSE value
         END,
         'RR-MM-DD HH12.MI.SSXFF AM'
       ) AS datetime
FROM   test_data

|                DATETIME |
|-------------------------|
|   2015-10-06 00:00:00.0 |
|   2115-10-06 01:00:00.0 |
| 2005-09-07 12:59:59.234 |

12小时的时钟没有0小时

如果要支持第0小时作为第12小时的别名，则可以编写自定义函数以将0替换为12：

Oracle 11g R2架构设置：

CREATE FUNCTION parse_timestamp(
  in_string VARCHAR2
) RETURN TIMESTAMP
IS
  p_string    VARCHAR2(30) := in_string;
  c_fix_hours CHAR(61) := '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$';
BEGIN
  IF REGEXP_LIKE( p_string, c_fix_hours, 'i' ) THEN
    p_string := REGEXP_REPLACE( p_string, c_fix_hours, '\112\2', 1, 1, 'i' );
  END IF;
  RETURN TO_TIMESTAMP( p_string, 'RR-MM-DD HH12.MI.SSXFF AM' );
END;
/

SELECT parse_timestamp(
         '2015-10-06 0:00:00.0 AM'
       ),
       parse_timestamp(
         '2115-10-06 01:00:00.0 AM'
       )
FROM   DUAL

| PARSE_TIMESTAMP('2015-10-060:00:00.0AM') | PARSE_TIMESTAMP('2115-10-0601:00:00.0AM') |
|------------------------------------------|-------------------------------------------|
|                    2015-10-06 00:00:00.0 |                     2115-10-06 01:00:00.0 |

WITH test_data ( value ) AS (
  SELECT '2015-10-06 0:00:00.0 AM'  FROM DUAL UNION ALL
  SELECT '2115-10-06 01:00:00.0 AM' FROM DUAL UNION ALL
  SELECT '5-9-7 00:59:59.234 PM'    FROM DUAL
)
SELECT TO_TIMESTAMP(
         CASE
         WHEN REGEXP_LIKE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', 'i' )
         THEN REGEXP_REPLACE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', '\112\2', 1, 1, 'i' ) 
         ELSE value
         END,
         'RR-MM-DD HH12.MI.SSXFF AM'
       ) AS datetime
FROM   test_data

|                DATETIME |
|-------------------------|
|   2015-10-06 00:00:00.0 |
|   2115-10-06 01:00:00.0 |
| 2005-09-07 12:59:59.234 |

查询1：

CREATE FUNCTION parse_timestamp(
  in_string VARCHAR2
) RETURN TIMESTAMP
IS
  p_string    VARCHAR2(30) := in_string;
  c_fix_hours CHAR(61) := '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$';
BEGIN
  IF REGEXP_LIKE( p_string, c_fix_hours, 'i' ) THEN
    p_string := REGEXP_REPLACE( p_string, c_fix_hours, '\112\2', 1, 1, 'i' );
  END IF;
  RETURN TO_TIMESTAMP( p_string, 'RR-MM-DD HH12.MI.SSXFF AM' );
END;
/

SELECT parse_timestamp(
         '2015-10-06 0:00:00.0 AM'
       ),
       parse_timestamp(
         '2115-10-06 01:00:00.0 AM'
       )
FROM   DUAL

| PARSE_TIMESTAMP('2015-10-060:00:00.0AM') | PARSE_TIMESTAMP('2115-10-0601:00:00.0AM') |
|------------------------------------------|-------------------------------------------|
|                    2015-10-06 00:00:00.0 |                     2115-10-06 01:00:00.0 |

WITH test_data ( value ) AS (
  SELECT '2015-10-06 0:00:00.0 AM'  FROM DUAL UNION ALL
  SELECT '2115-10-06 01:00:00.0 AM' FROM DUAL UNION ALL
  SELECT '5-9-7 00:59:59.234 PM'    FROM DUAL
)
SELECT TO_TIMESTAMP(
         CASE
         WHEN REGEXP_LIKE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', 'i' )
         THEN REGEXP_REPLACE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', '\112\2', 1, 1, 'i' ) 
         ELSE value
         END,
         'RR-MM-DD HH12.MI.SSXFF AM'
       ) AS datetime
FROM   test_data

|                DATETIME |
|-------------------------|
|   2015-10-06 00:00:00.0 |
|   2115-10-06 01:00:00.0 |
| 2005-09-07 12:59:59.234 |

：

CREATE FUNCTION parse_timestamp(
  in_string VARCHAR2
) RETURN TIMESTAMP
IS
  p_string    VARCHAR2(30) := in_string;
  c_fix_hours CHAR(61) := '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$';
BEGIN
  IF REGEXP_LIKE( p_string, c_fix_hours, 'i' ) THEN
    p_string := REGEXP_REPLACE( p_string, c_fix_hours, '\112\2', 1, 1, 'i' );
  END IF;
  RETURN TO_TIMESTAMP( p_string, 'RR-MM-DD HH12.MI.SSXFF AM' );
END;
/

SELECT parse_timestamp(
         '2015-10-06 0:00:00.0 AM'
       ),
       parse_timestamp(
         '2115-10-06 01:00:00.0 AM'
       )
FROM   DUAL

| PARSE_TIMESTAMP('2015-10-060:00:00.0AM') | PARSE_TIMESTAMP('2115-10-0601:00:00.0AM') |
|------------------------------------------|-------------------------------------------|
|                    2015-10-06 00:00:00.0 |                     2115-10-06 01:00:00.0 |

WITH test_data ( value ) AS (
  SELECT '2015-10-06 0:00:00.0 AM'  FROM DUAL UNION ALL
  SELECT '2115-10-06 01:00:00.0 AM' FROM DUAL UNION ALL
  SELECT '5-9-7 00:59:59.234 PM'    FROM DUAL
)
SELECT TO_TIMESTAMP(
         CASE
         WHEN REGEXP_LIKE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', 'i' )
         THEN REGEXP_REPLACE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', '\112\2', 1, 1, 'i' ) 
         ELSE value
         END,
         'RR-MM-DD HH12.MI.SSXFF AM'
       ) AS datetime
FROM   test_data

|                DATETIME |
|-------------------------|
|   2015-10-06 00:00:00.0 |
|   2115-10-06 01:00:00.0 |
| 2005-09-07 12:59:59.234 |

更新使用

案例

语句：

查询1：

CREATE FUNCTION parse_timestamp(
  in_string VARCHAR2
) RETURN TIMESTAMP
IS
  p_string    VARCHAR2(30) := in_string;
  c_fix_hours CHAR(61) := '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$';
BEGIN
  IF REGEXP_LIKE( p_string, c_fix_hours, 'i' ) THEN
    p_string := REGEXP_REPLACE( p_string, c_fix_hours, '\112\2', 1, 1, 'i' );
  END IF;
  RETURN TO_TIMESTAMP( p_string, 'RR-MM-DD HH12.MI.SSXFF AM' );
END;
/

SELECT parse_timestamp(
         '2015-10-06 0:00:00.0 AM'
       ),
       parse_timestamp(
         '2115-10-06 01:00:00.0 AM'
       )
FROM   DUAL

| PARSE_TIMESTAMP('2015-10-060:00:00.0AM') | PARSE_TIMESTAMP('2115-10-0601:00:00.0AM') |
|------------------------------------------|-------------------------------------------|
|                    2015-10-06 00:00:00.0 |                     2115-10-06 01:00:00.0 |

WITH test_data ( value ) AS (
  SELECT '2015-10-06 0:00:00.0 AM'  FROM DUAL UNION ALL
  SELECT '2115-10-06 01:00:00.0 AM' FROM DUAL UNION ALL
  SELECT '5-9-7 00:59:59.234 PM'    FROM DUAL
)
SELECT TO_TIMESTAMP(
         CASE
         WHEN REGEXP_LIKE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', 'i' )
         THEN REGEXP_REPLACE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', '\112\2', 1, 1, 'i' ) 
         ELSE value
         END,
         'RR-MM-DD HH12.MI.SSXFF AM'
       ) AS datetime
FROM   test_data

|                DATETIME |
|-------------------------|
|   2015-10-06 00:00:00.0 |
|   2115-10-06 01:00:00.0 |
| 2005-09-07 12:59:59.234 |

：

CREATE FUNCTION parse_timestamp(
  in_string VARCHAR2
) RETURN TIMESTAMP
IS
  p_string    VARCHAR2(30) := in_string;
  c_fix_hours CHAR(61) := '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$';
BEGIN
  IF REGEXP_LIKE( p_string, c_fix_hours, 'i' ) THEN
    p_string := REGEXP_REPLACE( p_string, c_fix_hours, '\112\2', 1, 1, 'i' );
  END IF;
  RETURN TO_TIMESTAMP( p_string, 'RR-MM-DD HH12.MI.SSXFF AM' );
END;
/

SELECT parse_timestamp(
         '2015-10-06 0:00:00.0 AM'
       ),
       parse_timestamp(
         '2115-10-06 01:00:00.0 AM'
       )
FROM   DUAL

| PARSE_TIMESTAMP('2015-10-060:00:00.0AM') | PARSE_TIMESTAMP('2115-10-0601:00:00.0AM') |
|------------------------------------------|-------------------------------------------|
|                    2015-10-06 00:00:00.0 |                     2115-10-06 01:00:00.0 |

WITH test_data ( value ) AS (
  SELECT '2015-10-06 0:00:00.0 AM'  FROM DUAL UNION ALL
  SELECT '2115-10-06 01:00:00.0 AM' FROM DUAL UNION ALL
  SELECT '5-9-7 00:59:59.234 PM'    FROM DUAL
)
SELECT TO_TIMESTAMP(
         CASE
         WHEN REGEXP_LIKE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', 'i' )
         THEN REGEXP_REPLACE( value, '^(\d{1,4}-\d\d?-\d\d? )00?(:[0-5]?\d:[0-5]?\d(\.\d+)? [AP]M)$', '\112\2', 1, 1, 'i' ) 
         ELSE value
         END,
         'RR-MM-DD HH12.MI.SSXFF AM'
       ) AS datetime
FROM   test_data

|                DATETIME |
|-------------------------|
|   2015-10-06 00:00:00.0 |
|   2115-10-06 01:00:00.0 |
| 2005-09-07 12:59:59.234 |

RR

是没有世纪的年份，请尝试使用

YYYY

来代替。检查：每个周期由12个小时组成，编号为：12（作为零）、1、2、3、4、5、6、7、8、9、10和11。-不允许使用0。@WernfriedDomscheit我编写了一个脚本来提取数据，但我并没有获取相同的数据并将其放回。当我添加导致ORA-01818的

HH24

时：“HH24”禁止使用子午线指示器，这意味着你不能使用

AM

或

PM

-你不能同时使用12小时和24小时格式。

RR

是没有世纪的一年，改为尝试

YYYY

。检查：每个时段由12个小时组成，编号为：12（充当零）、1、2、3、4、5、6、7、8、9、10和11。-不允许使用0。@WernfriedDomscheit我编写了一个脚本来提取数据，但我并没有获取相同的数据并将其放回。当我添加

HH24

导致

ORA-01818时：“HH24”阻止使用子午线指示器

，这意味着你不能使用

AM

或

PM

-你不能同时使用12小时和24小时格式。非常感谢你的详细回复，但我无法更改数据库中的任何内容。这将与我正在测试的内容背道而驰。我需要弄清楚的是，它允许我使用

24H

time格式。建议？@noname\u dev使用

CASE

语句。非常感谢您的详细回复，但我无法更改数据库中的任何内容。这将与我正在测试的内容背道而驰。我需要弄清楚的是，它允许我使用

24H

time格式。建议？@noname\u dev使用

CASE

语句。