商业网站建设目标,客村网站建设,房地产楼盘微信网站建设营销方案,太原最新消息方法一#xff1a;
在Oracle中#xff0c;你可以使用DELETE语句结合ROWID和子查询来删除重复的记录。以下是一个示例#xff1a;
DELETE FROM your_table
WHERE ROWID NOT IN (SELECT MAX(ROWID)FROM your_tableGROUP BY column1, column2, ... -- 列出用于判断重复的列
)…方法一
在Oracle中你可以使用DELETE语句结合ROWID和子查询来删除重复的记录。以下是一个示例
DELETE FROM your_table
WHERE ROWID NOT IN (SELECT MAX(ROWID)FROM your_tableGROUP BY column1, column2, ... -- 列出用于判断重复的列
);原数据 示例
DELETE FROM SJS.CGGL_FWZX_USC_WS_SPYJ_SSFW
WHERE ROWID NOT IN (SELECT MAX(ROWID)FROM SJS.CGGL_FWZX_USC_WS_SPYJ_SSFWGROUP BY ID -- 列出用于判断重复的列
);
COMMIT ;
结果 方法二
DELETE FROM your_table
WHERE id NOT IN (SELECT MIN(id)FROM your_tableGROUP BY A, B, C);
