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목록DB (158)
develog
[Oracle] 중복 데이터 제거
SELECT ROWID, C.*--DELETEFROM AATEST CWHERE C.ROWID IN ( SELECT B.ROWID FROM ( SELECT ROW_NUMBER() OVER(PARTITION BY TITLE ORDER BY REG_TS) RNUM, ROWID, A.* FROM AATEST A ) B WHERE RNUM = 2);
DB/Oracle
2017. 6. 13. 12:10
[MSSQL] date
SELECT GETDATE()SELECT SYSDATETIME()SELECT CAST(GETDATE() AS DATE)SELECT CONVERT(CHAR(8), SYSDATETIME(), 112)SELECT CONVERT(DATETIME, CONVERT(CHAR(8), SYSDATETIME(), 112))
DB/MSSQL
2017. 5. 26. 12:27
[Oracle] 컬럼 순서 변경
CREATE TABLE TB_AA_TMP ASSELECT COL3, COL2, COL1FROM TB_AA; DROP TABLE TB_AA; RENAME TB_AA_TMP TO TB_AA;
DB/Oracle
2017. 4. 28. 18:07
[Oracle] index 비활성
ALTER INDEX IDX_01 UNUSABLE;ALTER INDEX IDX_01 REBUILD; SELECT INDEX_NAME, TABLE_NAME, STATUSFROM USER_INDEXESWHERE INDEX_NAME = 'IDX_01';
DB/Oracle
2017. 4. 28. 14:38
[DB] DB version
Oracle SELECT BANNER FROM V$VERSION WHERE ROWNUM = 1 MS-SQL SELECT @@VERSION MySQL SELECT VERSION()
DB/DB common
2017. 4. 25. 16:35