How to find the most repeat data in oracle?

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by addison , in category: MySQL , 15 days ago

How to find the most repeat data in oracle?

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1 answer

by haylee.mertz , 14 days ago

@addison 

One way to find the most repeated data in an Oracle database is by using SQL queries. You can use the following SQL query to find the data that is repeated the most in a specific column:

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SELECT column_name, COUNT(*) AS frequency
FROM table_name
GROUP BY column_name
ORDER BY frequency DESC;


Replace column_name with the name of the column you want to analyze and table_name with the name of the table where the data is stored. This query will return the data in the specified column along with the frequency of each value, sorted in descending order by frequency.


Alternatively, you can also use the following query to find the most repeated rows in a table:

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SELECT *
FROM (
    SELECT column1, column2, COUNT(*) AS frequency
    FROM table_name
    GROUP BY column1, column2
    ORDER BY frequency DESC
) WHERE ROWNUM = 1;


Replace column1, column2, and table_name with the appropriate column names and table name. This query will return the row with the highest frequency of occurrence based on the specified columns.