我需要这样的东西:如何将LONG数据转换为TIMESTAMP或VARCHAR2?
SELECT PARTITION_NAME,
to_char(LONG_TO_TIMESTAMP(HIGH_VALUE), 'MM/DD/YYYY HH24:MI:SS') AS HIGH_VAL
FROM USER_TAB_PARTITIONS
WHERE TABLE_NAME = 'TABLE_NAME'
输出应该是这个样子:
PARTITION_NAME HIGH_VAL ---------------- -------------------- SOME_NAME 01/01/2010 00:00:00
当我运行:
SELECT PARTITION_NAME,HIGH_值与USER_TAB_PARTITIONS
它看起来像:
PARTITION_NAME HIGH_VAL ---------------- -------------------- SOME_NAME TIMESTAMP' 2010-01-01 00:00:00'
如果我使用UTL_RAW.CAST_TO_VARCHAR2(HIGH_VALUE)
,
我最终得到一个ORA-00997: illegal use of LONG datatype
错误。
如果我使用''||HIGH_VALUE
或to_clob(HIGH_VALUE)
或to_char(HIGH_VALUE)
,
我得到一个ORA-00932: inconsistent datatypes: expected [DATA_TYPE] got LONG
错误
我的工作职能感谢尚美学园:
CREATE OR REPLACE FUNCTION GET_HIGH_VALUE_AS_DATE (
p_TableName IN VARCHAR2,
p_PatitionName IN VARCHAR2
) RETURN DATE
IS
v_LongVal LONG;
BEGIN
SELECT HIGH_VALUE INTO v_LongVal
FROM USER_TAB_PARTITIONS
WHERE TABLE_NAME = p_TableName
AND PARTITION_NAME = p_PatitionName;
RETURN TO_DATE(substr(v_LongVal, 11, 19), 'YYYY-MM-DD HH24:MI:SS');
END GET_HIGH_VALUE_AS_DATE;
SQL貌似
SELECT PARTITION_NAME, GET_HIGH_VALUE_AS_DATE(TABLE_NAME, PARTITION_NAME)
FROM USER_TAB_PARTITIONS
WHERE TABLE_NAME LIKE 'TABLE_NAME'
AND ROWNUM < 2;
@scrapy做到了这一点... – shofee 2012-03-10 05:03:07