基于列 MySQL 删除重复行

Question

I'm trying to delete all rows having the same column value in MySQL, but taking only the last row. the equivalent in Python would be:

df = df.drop_duplicates(subset='column_content', keep="last")

any idea?

I've tried:

sqlStatement = '''
SELECT t1.*
FROM table1 t1
JOIN table2 t2
WHERE t1.column_content = t2.column_content
  AND t1.timestamp < t2.timestamp
'''
test = pd.read_sql(sql, con=connectionInstance)

Answer 1

DELETE t1.*
FROM source_table t1
JOIN source_table t2
WHERE t1.some_column = t2.some_column
  AND t1.id < t2.id
/* Alternatively AND t1.datetime_field < t2.datetime_field */