Delete duplicate data

Delete duplicate data
Delete from cbe_subscriber
Where rowid! = (Select max (rowid)
From cbe_subscriber B
Where a. SUBSCRIBERKEY = B. SUBSCRIBERKEY
And a. APPLYTIME = B. APPLYTIME );
ORACLE deletes duplicate data

I have already tried it. [Line ].
Delete the same row (except for the primary key and other rows with the same attribute value). Let's take an example.
Delete from dept a where a. deptno <>
(
Select min (deptno) from dept t group by (dname, loc)
Having count (*)> 1 and a. dname = t. dname and a. loc = t. loc
);
The primary key of dept is deptno. For rows with the same attribute values (dname, loc), delete the rows repeatedly and leave the row with the smallest deptno value.
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The primary key of your table is user_id, and the duplicate attribute value is (company_id, fee_date, insure_id,
You can change it to the following:
Delete from t_insure_feed a where a. user_id <>
(
Select min (user_id) from t_insure_feed t group by (company_id, fee_date, insure_id)
Having count (*)> 1 and a. company_id = t. company_id and a. fee_date = t. fee_date and a. insure_id = t. insure_id
);

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The table you created does not have a primary key? Maybe your table does not exist. Try the first 3rd items. If you don't give me a red flag, you won't be playing with you.

3. You can create a new table with no duplicate rows loaded.
Create table mytemp
Select user_id, company_id, fee_date, insure_id/* list all columns */from t_insure_feed group by (user_id, company_id, fee_date, insure_id/* list all columns */);

Query: select * from mytemp;

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1. query duplicate (usr_id) rows:
Select user_id from t_insure_feed group by user_id having count (*)> 1;
2. Delete All duplicate rows! (No more than one)
Delete from t_insure_feed where user_id in (select user_id from t_insure_feed group by user_id having count (*)> 1 );
Tip: rollback can be used for restoration.

How can I use excel to delete duplicate data?

I wonder if you are using an OFFICES2007 or later version? If yes, select all cells-use the condition format-highlight the cell rule-duplicate value-set to: Here select Custom-fill-select a color, and then OK, at this time, repeated options will be filled with the color you set. Next, use EXCEL Data-filtering. If it is version 2007, you will see a "filter by color" option in the drop-down list of filtering options and select the color you just filled in, then, after filtering, you can delete it.