deleted repeated data from a table in matlab

To delete repeated data from a table in MATLAB, you can use the SQL DISTINCT keyword in a DELETE statement.

Here's an example code snippet:

main.m
% Connect to database
conn = database('dbName', 'username', 'password');

% Define the SQL query
query = "DELETE FROM table_name WHERE id NOT IN (SELECT MAX(id) FROM table_name GROUP BY unique_column)";

% Execute the query
exec(conn, query);

% Close the database connection
close(conn);
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In this example, replace dbName, username, and password with the appropriate values for your database. Replace table_name with the name of the table you want to remove duplicates from. Replace id with the name of the primary key column in your table, and unique_column with the name of the column that contains the unique values.

The query uses a subquery to select the MAX(id) for each unique value in unique_column. It then deletes all rows from table_name where the id is not in the subquery result set. This has the effect of keeping only the row with the highest id for each unique value in the unique_column.