python - 增加特定行的列中的整数值

Question

我有一个表，其中包含 URL 列表以及它们被访问的次数。使用 python，如何创建一个 SQL 查询来增加特定 URL 的 HITS 列？即特定行？

到目前为止我已经:

def insertURL(url) :
    ##query to fetch all URLs
    sql = "SELECT URL_visited FROM URL"

    ##query to insert a number into the HITS column
    insert_sql = "INSERT INTO URL_visited (total_hits)"
    insert_sql = insert_sql + "VALUES('"+1+"')"

    ##execute sql query to fetch URLs 
    cursor.execute(sql)
    results = cursor.fetchall()

    ##flag to check whether the URL already exists in table
    flag = 0 

    ##checking if URL exists
    for row in results:
        if (row==url) :
            flag = 1 

    ##if yes, increment HITS column for that URL (specific row)
    if flag == 1 :
        ##how to do?? 

如您所见，我可以在 HITS 列中插入一个数字，但如何增加特定行的值？

Answer 1

优化方法:只需更新/增量特定url_visited值的total_hits列值:

(考虑urls是目标表名称)

def update_url_hits(url):
   sql_query = "UPDATE urls SET total_hits = total_hits + 1 WHERE url_visited = %"
   cursor.execute(sql_query, (url,))
   connection.commit()