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Tag: duplicates

SQL query to fetch distinct values from same table

Let’s say I have this table: employeetable: empid joindate location HRupdatedate Changes 1 2002-01-05 Delhi 2021-03-01 New 2 2009-09-09 Mumbai 2021-03-05 New 1 2010-06-27 Hyderabad 2021-03-03 Transfer 2 2015-11-02 Delhi 2021-03-06 Transfer 3 2020-01-01 Mumbai 2021-03-06 New 4 2007-07-30 Delhi 2021-03-04 New I want to get data from this table where empid in (1,2,4). That will return: empid joindate location

Deleting rows in sql rows based on pair value

I have SQL test table as below: Item Doc_No Code Line_Item 1 abc1234 101 01 2 abc1234 102 01 3 def5678 101 01 4 def5678 102 01 5 ghi1234 101 01 6 ghi1234 101 02 7 jkl5678 101 01 I am trying to eliminate rows when duplicate values of “Doc_No” has pair values of “101” and “102” in “Code” column

mysql Duplicate entry error for primary key with similar values

This is how i created my table, i have composite key columns. now, im trying to insert this two values that are the same except for the last character ‘t’: value1 = testbtc:testusd value2 = testbtc:testusdt output error: it just makes no sense, they are not duplicated, is something missing on my table? Answer I suspect that the version of

Get total count of duplicates in column

I need a query to count the total number of duplicates in a table, is there any way to do this? If I have a table like this: I can’t use SELECT COUNT(quantity) because it returns 2. (40 | 29) How can I return 5? (40 | 40 | 29 | 29 | 29) Answer Using analytic functions:

Delete all duplicates except first one mysql

I have a table with a column serial_number that is repeated a few times. How would I delete the entire row except the first duplicate? By the following, I can select all the duplicates. But can’t delete. SELECT serial_number, COUNT(*) FROM trademark_merge GROUP BY serial_number HAVING COUNT(*) > 1 Answer Assuming that the primary key of your table is id,

How can I find duplicate records in clickhouse [closed]

Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 1 year ago. Improve this question I want to know how I can find duplicate data entries within one table in clickhouse. I am actually investigating on a merge tree table

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