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가끔 한번 써서 그런가 안 외워져서 적어둔다. 개쌔리야...
SELECT
*
FROM
(
SELECT DBMS_LOB.SUBSTR(FILE_STRE_COURS, DBMS_LOB.GETLENGTH(FILE_STRE_COURS), 1) AS LOB_CONTENTS
FROM TN_FILEDETAIL
) A
GROUP BY LOB_CONTENTS
;
SELECT ATCH_FILE_ID,
FILE_SN,
DBMS_LOB.SUBSTR(FILE_STRE_COURS, DBMS_LOB.GETLENGTH(FILE_STRE_COURS), 1) AS FILE_STRE_COURS,
STRE_FILE_NM,
ORIGNL_FILE_NM,
FILE_EXTSN,
FILE_CN,
FILE_SIZE
FROM TN_FILEDETAIL
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