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  • oracle loop while

    2012-08-06 16:19:30
    初学者 练习 oracle loop while
  • RuntimeError: Cannot run the event loop while another loop is running <p>cap[0] RuntimeError: Cannot run the event loop while another loop is running <p>'IP' in cap RuntimeError: Cannot run ...
  • <h2>Checklist <ul><li>[x] I am sure the error ...RuntimeError: Cannot run the event loop while another loop is running </task></code></pre>该提问来源于开源项目:pyrogram/pyrogram</p></div>
  • 执行这行代码会报错:Cannot run the event loop while another loop is running 解决方法: 在 jupyter-notebook 的一个单元格中输入: !pip install nest_asyncio import nest_asyncio nest_asyncio.apply()

    我是在TensorFlow的教程中发现的报错:
    在这里插入图片描述
    执行这行代码会报错:Cannot run the event loop while another loop is running

    解决方法:
    在 jupyter-notebook 的一个单元格中输入:

    !pip install nest_asyncio
    import nest_asyncio
    nest_asyncio.apply()
    
    展开全文
  • <p>NPC enters Infinite loop while holding ranged weapon <h3>Steps to reproduce the behavior <p>NPC with ranged weapon equipped will eventually enter loop <p>Can confirm NPC does not have to be ...
  • RuntimeError: Cannot run the event loop while another loop is running </module></code></pre> <p>MacOS: 10.14.6 Python 3.7.7 ib_insync: latest, installed from git, hash f4e0525 nest-asyncio: ...
  • ORACLE 循环语句 LOOP WHILE FOR  2010-05-04 11:31:12| 分类: oracle|字号 订阅 loop循环:create or replace procedure pro_test_loop isi number;begini:=0;loop i:=i+1; dbms_output.put_line(i...

    ORACLE 循环语句 LOOP WHILE FOR   

    2010-05-04 11:31:12|  分类: oracle|字号 订阅

    loop循环:
    create or replace procedure pro_test_loop is
    i number;
    begin
    i:=0;
    loop
      i:=i+1;
      dbms_output.put_line(i);
      if i>5 then
        exit;
      end if;
    end loop;
    end pro_test_loop;

    while循环:
    create or replace procedure pro_test_while is
    i number;
    begin
    i:=0;
    while i<5 loop
      i:=i+1;
      dbms_output.put_line(i);
    end loop;
    end pro_test_while;

    for循环1:
    create or replace procedure pro_test_for is
    i number;
    begin
    i:=0;
    for i in 1..5 loop
      dbms_output.put_line(i);
    end loop;
    end pro_test_for;

    for循环2:
    create or replace procedure pro_test_cursor is
    userRow t_user%rowtype;
    cursor userRows is
    select * from t_user;
    begin
    展开全文
  • <p>Fix an issue that makes an infinite loop while switching the visualizations. <p>An infinite loop occurs because the front-end web application tries to commit the paragraph even if there are no ...
  • <div><p>Scenario: If kakfa throws message is too big or kafka specific exception it goes in infinite loop <p>We need to fix infinite loop here: ...odpi/egeria</p></div>
  • And here is the loop that can not break because <code>beat + bp</code> is always <code>nan</code></p> <pre><code> while (beat + bp < 0) { beat += bp; } </code></pre> <p>My ...
  • I presume it should be better to write the data to be sent in a buffer and to use an interrupt to send the buffer without blocking the main loop. </p><p>该提问来源于开源项目:robomechs/6-AXIS-...
  • 代码如下: import tornado.ioloop import tornado.web from tornado.httpclient import HTTPClient, AsyncHTTPClient class MainHandler(tornado.web.RequestHandler): # 同步 def get(self): ...
  • 嵌套循环:嵌套循环最好用游标嵌套,然后两个loop之类的,这里为了方便用了while-游标嵌套,b:BEGIN是写了一个外部的标签,因为我要循环365次,但是总不会真的要循环这么多次,当条件满足后就可以通过这个标签来进行...

    项目需求:对表进行重新构建,这个用java的缺点是数据的传送以及遍历的话会消耗更多的资源,因此使用mysql的存储过程进行构建。

    具体要求:跳过原本设置的假期和课程本身的假期对数据进行重排。

    1.游标从创建到关闭的过程: 注意class_id1 的属性刚开始由declare设置的默认是空,但在打开游标之前只要给它重新赋值就不为空了。

    DECLARE cc_2 CURSOR FOR SELECT id FROM pms_teach_example_day where class_id=class_id1 AND id>=(SELECT id FROM pms_teach_example_day WHERE class_id=class_id1 AND date is NULL ORDER BY id limit 1);

    2.定义结束条件:02000是sql的状态码,意思是这条sql语句执行到最后了,当然在最开始的时候要定义done这个属性,默认值设为0,如果这个done属性还用在其他游标里,每次关闭游标前把done设置为0(重点),以下是定义结束条件的两种写法。

    DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET done = 1;

    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done=1;

    3.打开游标进行循环:循环也可以有两种:一种就是repeat 另一种就是loop,loop的好处是可以控制循环何时跳出,记得打开loop要跟着跳出loop和关闭loop的结束语句,另外,在这里边虽然没有写done 的值但是它默认结束后就会给你返回1,因此在关闭游标前依旧要把done的值设为0,这个很坑,因为mysql的变量都是全局变量,一处修改下次就不能用了,所以一定要重置,cc_2可以简单理解为查询的每一行。

    写法一:

    OPEN cc_2;

    tloop:LOOP

    FETCH cc_2 INTO id2;

    SET date2 = (SELECT SUBSTRING_INDEX(SUBSTRING_INDEX(date3,',',j+1),',',-1));

    IF i>j THEN

    update pms_teach_example_day SET date = date2 WHERE id = id2 ;

    SET j=j+1;

    END IF;

    IF i=j THEN

    LEAVE tloop;

    END if;

    END LOOP tloop;

    SET j =0;

    SET done =0;

    CLOSE cc_2;

    写法二:

    OPEN t_index;

    REPEAT

    FETCH cc_2 INTO id2;

    IF done!=1 THEN

    //操作语句

    END IF;

    UNTIL DONE END REPEAT;

    CLOSE t_index;

    5.嵌套循环:嵌套循环最好用游标嵌套,然后两个loop之类的,这里为了方便用了while-游标嵌套,b:BEGIN是写了一个外部的标签,因为我要循环365次,但是总不会真的要循环这么多次,当条件满足后就可以通过这个标签来进行跳出循环,跳出的语句跟loop一样:LEAVE b; 嵌套循环实现跟java一样,外部执行一次,里边要完整的循环一次,注意END LOOP 之后这个内循环就已经关闭了,END LOOP 和CLOSE cc_2之间已经不算在循环里了,所以说标红的之一段代码是外循环里的,我的外循环是用jj来进行控制,内循环的话就是自然执行完,特别注意  j  这个属性,这个属性在内循环中一直使用,因此每次外循环调用的时候要重新给它赋值,这样的话才能保证每次内循环  j   开始的值是固定的。

    6.最后最后,一定要开始事务,将需要保持原子性的代码都放在一个事务里,不然你有的执行成功有的执行不成功会造成数据混乱。

    6.控制循环次数时,不要用内置函数,length,replace来控制,非常消耗性能。

    7.注意,当没有set的时候变量不会自己赋值,即declare 一个int 的变量时一定要初始化为0,这样才能进入循环;

    8.坑:done!=1和done=1,先看两个截图:

    f06e0bca2d5209de8772cb67b74dba51.png

    0c1f79ff64b1cd5ef2f79d6030bf0154.png

    因为第二张图的if后边没加结束的条件,所以循环到最后之后还是把i加1了,注意这个加一操作是在循环结束后加的,然后判断done=1再跳出的时候就会发现i比正常的值多1。

    9.代码整理(没加事务):

    5911cc4d7a65a19d4567f6239a34542d.png

    展开全文
  • <div><p>https://github.com/Artem-Schander/graphql-infinite-loop</p>该提问来源于开源项目:rebing/graphql-laravel</p></div>
  • <p>Nothing of importance, but while testing this feature I came across an interesting behaviour: if a step has a <code>foreach</code> property and a <code>loop</code> condition, then the children will...
  • <div><p>该提问来源于开源项目:souliss/souliss</p></div>
  • <div><p>Fixes #25 </p><p>该提问来源于开源项目:socketry/async</p></div>
  • Loop中用工作区修改另外一个相同的内表时,发生DUMP:TABLE_ILLEGAL_STATEMENT 短文本描述:Error in an ABAP statement (processing an internal table). 使用语法:MODIFY lt_sflight3 FROM WA_SFLIGHT . ...

    SAP LOOP WHILE中修改内表数据

    场景:

    1. 在Loop中用工作区修改另外一个相同的内表时,发生DUMP:TABLE_ILLEGAL_STATEMENT
    2. 短文本描述:Error in an ABAP statement (processing an internal table).
    3. 使用语法:MODIFY lt_sflight3 FROM WA_SFLIGHT .

    1-1

    1-2

    解决方法:

    使用语法3中的语句:

    1. MODIFY lt_sflight1 FROM wa_sflight.
    2. MODIFY lt_sflight2
    3. MODIFY lt_sflight3 FROM WA_SFLIGHT TRANSPORTING CARRID WHERE CARRID = ‘AA’ AND FLDATE = ‘20200423’. "可在LOOP WHILE中修改其他内表的数据
    DATA: lt_sflight1 TYPE TABLE OF SFLIGHT,
          lt_sflight2 TYPE TABLE OF SFLIGHT WITH HEADER LINE,
          lt_sflight3 TYPE TABLE OF SFLIGHT.
    
    SELECT * FROM SFLIGHT INTO TABLE lt_sflight1 UP TO 3 ROWS.
    SELECT * FROM SFLIGHT INTO TABLE lt_sflight2 UP TO 3 ROWS.
    SELECT * FROM SFLIGHT INTO TABLE lt_sflight3 UP TO 3 ROWS.
    
      LOOP AT lt_sflight1 INTO DATA(wa_sflight).
        wa_sflight-CARRID = 'XX'.
        MODIFY lt_sflight1 FROM wa_sflight.
        MODIFY lt_sflight3 FROM WA_SFLIGHT TRANSPORTING CARRID WHERE CARRID = 'AA' AND CONNID = '0017' AND FLDATE = '20200423'.
      ENDLOOP.
    
      LOOP AT lt_sflight2.
        lt_sflight2-CARRID = 'XY'.
        MODIFY lt_sflight2.
        MODIFY lt_sflight3 FROM lt_sflight2 TRANSPORTING CARRID WHERE CARRID = 'AA' AND CONNID = '0017' AND FLDATE = '20200525'.
      ENDLOOP.
    
    cl_demo_output=>display( lt_sflight1 ).
    cl_demo_output=>display( lt_sflight2[] ).
    cl_demo_output=>display( lt_sflight3 ).
    

    展开全文
  • It loops single values, while it shouldn't. <pre><code> // a doesn't loop (is correct) a = PatternProxy(7); b = Pseq([1, 2, 3, a, 5], inf); b.asStream.nextN(8); // a loops (wrong) a ...
  • <div><p>Hi, all <p>The program died in the loop while( __HAL_SPI_GET_FLAG( &obj->Spi, SPI_FLAG_TXE ) == RESET );</p><p>该提问来源于开源项目:Lora-net/LoRaMac-node</p></div>
  • <div><h3>Bug Report <h4>Reproducible in: <p>slackclient version: 2.0.1 <p>python version: 3.7 <p>OS version(s): MACOSX <h4>Description <p>The code below, produces an error (see screenshot) when run in...
  • 1.这里只是写了个简单的demo1,来记录为什么报错,见下面代码 # demo1.py import tornado.web import tornado.ioloop ...import tornado.options import tornado.httpclient ...from tornado.options import define, ...
  • while (i  {  x=x + "The number is " + i + "";  i++; } Example2: do  {  x=x + "The number is " + i + "";  i++;  } while (i Example3: cars=["BMW","Volvo","Saab",

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