cursor

cursor精品文章

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  python中操作mysql的pymysql模块详解

  ...blog, charset=utf8) # 创建游标, 查询数据默认为元组类型 cursor = conn.cursor() # 执行SQL，并返回收影响行数 row1 = cursor.execute(update users set password = 123) print(row1) # 执行SQL，并返回受影响行数 row2 = cursor.execute(update u...

  shiweifu 2019-07-30 16:22 评论0 收藏0
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  【Python3】pymysql模块

  ...127.0.0.1, port=3306, user=root, passwd=123, db=t1) # 创建游标 cursor = conn.cursor() # 执行SQL，并返回收影响行数 effect_row = cursor.execute(update hosts set host = 1.1.1.2) # 执行SQL，并返回受影响行数 #effect_row = ...

  Drummor 2019-07-30 14:22 评论0 收藏0
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  python 实现mysql增删查改

  ... 数据库密码port 端口 mysql数据库端口db 数据库名基本语句cursor = conn.cursor()#初始化一个游标对象sql = 数据库操作语句cursor.execute(sql)#执行该语句conn.commit()#关闭游标对象cursor.close()#关闭数据库rollback 回滚'''db = py...

  番茄西红柿 2021-11-23 09:51 评论0 收藏2637
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  html一些标签在不同浏览器或者不同版本浏览器的注意事项

  ...要为图像创建文字提示，可以使用 title 属性。   二、cursor:hand 在IE10下无法让光标变成手形   这个问题也比较奇怪，估计也是兼容性的问题，上网找到了一篇比较好的文章，弄明白了cursor:hand 与 cursor:pointer 的区别   cursor:hand ...

  Panda 2019-04-23 13:06 评论0 收藏0
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  Postgresql Server Side Cursor

  Postgresql Server Side Cursor When a database query is executed, the Psycopg cursor usually fetches all the records returned by the backend, transferring them to the client process. If the query retur...

  joywek 2019-07-25 12:33 评论0 收藏0
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  Postgresql Server Side Cursor

  Postgresql Server Side Cursor When a database query is executed, the Psycopg cursor usually fetches all the records returned by the backend, transferring them to the client process. If the query retur...

  SolomonXie 2019-07-25 10:48 评论0 收藏0
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  ABAP OPEN SQL里OPEN CURSOR和SELECT的比较

  OPEN CURSOR After the OPEN CURSOR statement, the database cursor is positioned in front of the first line of the result set. FETCH This statement extracts the requested rows (using the addition INTO o...

  Aomine 2019-06-26 17:35 评论0 收藏0
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  【mongoDB中级篇①】游标cursor

  ...了 $row[]=$f; } var_dump($row); mongoDB代码(js) // while循环 var cursor = db.goods.find({goods_id:{$lte:20}},{_id:0,goods_id:1}); //使用变量来保存游标 while(cursor.hasNext()){ //cursor.hasNext()判断游标是否取到尽头 ...

  AZmake 2019-06-26 16:58 评论0 收藏0