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  • clause

    2019-09-25 18:48:04
    clause 英[klɔːz]美[klɔz]口语练习跟读 n. 条款;[计] 子句 specify 英['spesɪfaɪ]美['spɛsɪfaɪ]口语练习跟读 vt. 指定;详细说明;列举;把…列入说明书 either 英['aɪðə; 'iː-]美['ið...

    clause  

    英 [klɔːz]  美 [klɔz]  口语练习 跟读
    • n. 条款;[计] 子句

    specify  

    英 ['spesɪfaɪ]  美 ['spɛsɪfaɪ]  口语练习 跟读
    • vt. 指定;详细说明;列举;把…列入说明书

      either  

      英 ['aɪðə; 'iː-]  美 ['iðɚ]  口语练习 跟读
      • adj. 两者之中任一的;两者之中每一的
      • prep. 任何一个
      • conj. 也(用于否定句或否定词组后);根本
      • pron. 任一,两方,随便哪一个;两者中的一个或另一个
        • option  报错

          英 ['ɒpʃ(ə)n]  美 ['ɑpʃən]  口语练习 跟读
          • n. [计] 选项;选择权;买卖的特权

    转载于:https://www.cnblogs.com/871735097-/p/3867255.html

    展开全文
  • <div><p>The JoinClause can now use any Clause as a "ON" clause. <p>Additionaly, the join clause between two tables can be guessed automatically it one and only one foreign key links them.</p>...
  • FILTER clause

    2020-11-30 11:26:49
    <div><p>I'd like to make a contribution by implementing the <code>FILTER</code> clause, as better described in these blog posts: ...
  • MDIO Clause 45 和Clause 22

    2020-06-28 16:42:48
    MDIO Clause 45 和Clause 22 Contents MDIO History Theory of Operation Clause 22 Clause 45 References MDIO History Management Data Input/Output, or MDIO, is a 2-wire serial bus that is used to manage ...

    MDIO Clause 45 和Clause 22

    Contents MDIO History Theory of Operation Clause 22 Clause 45 References MDIO History Management Data Input/Output, or MDIO, is a 2-wire serial bus that is used to manage PHYs or physical layer de] 

    Contents

    • MDIO History
    • Theory of Operation
    • Clause 22
    • Clause 45
    • References

    MDIO History

    Management Data Input/Output, or MDIO, is a 2-wire serial bus that is used to manage PHYs or physical layer devices in media access controllers (MACs) in Gigabit Ethernet equipment. The management of these PHYs is based on the access and modification of their various registers.

    MDIO was originally defined in Clause 22 of IEEE RFC802.3. In the original specification, a single MDIO interface is able to access up to 32 registers in 32 different PHY devices. These registers provide status and control information such as: link status, speed ability and selection, power down for low power consumption, duplex mode (full or half), auto-negotiation, fault signaling, and loopback.

    To meet the needs the expanding needs of 10-Gigabit Ethernet devices, Clause 45 of the 802.3ae specification provided the following additions to MDIO:

    • Ability to access 65,536 registers in 32 different devices on 32 different ports
    • Additional OP-code and ST-code for Indirect Address register access for 10 Gigabit Ethernet
    • End-to-end fault signaling
    • Multiple loopback points
    • Low voltage electrical specification

     

     

    Theory of Operation

    The MDIO bus has two signals: Management Data Clock (MDC) and Managment Data Input/Ouput (MDIO).

    MDIO has specific terminology to define the various devices on the bus. The device driving the MDIO bus is identified as the Station Management Entity (STA). The target devices that are being managed by the MDC are referred to as MDIO Manageable Devices (MMD).

    The STA initiates all communication in MDIO and is responsible for driving the clock on MDC. MDC is specified to have a frequency of up to 2.5 MHz.

    Clause 22

    Clause 22 defines the MDIO communication basic frame format (figure 13) which is composed of the following elements:




    Figure 13: Basic MDIO Frame Format

     

    ST 2 bits Start of Frame (01 for Clause 22)
    OP 2 bits OP Code
    PHYADR 5 bits PHY Address
    REGADR 5 bits Register Address
    TA 2 bits Turnaround time to change bus ownership from STA to MMD if required
    DATA 16 bits Data
    Driven by STA during write
    Driven by MMD during read

    The frame format only allows a 5-bit number for both the PHY address and the register address, which limits the number of MMDs that the STA can interface. Additionally, Clause 22 MDIO only supports 5V tolerant devices and does not have a low voltage option.

    Clause 45

    In order to address the deficiencies of Clause 22, Clause 45 was added to the 802.3 specification. Clause 45 added support for low voltage devices down to 1.2V and extended the frame format (figure 14) to provide access to many more devices and registers. Some of the elements of the extended frame are similar to the basic data frame:



    Figure 14: Extended MDIO Frame Format

     

    ST 2 bits Start of Frame (00 for Clause 45)
    OP 2 bits OP Code
    PHYADR 5 bits PHY Address
    DEVTYPE 5 bits Device Type
    TA 2 bits Turnaround time to change bus ownership from STA to MMD if required
    ADDR/DATA 16 bits Address or Data
    Driven by STA for address
    Driven by STA during write
    Driven by MMD during read
    Driven by MMD during read-increment-address

    The primary change in Clause 45 is how the registers are accessed. In Clauses 22, a single frame specified both the address and the data to read or write. Clause 45 changes this paradigm. First an address frame is sent to specify the MMD and register. A second frame is then sent to perform the read or write.

    The benefits of adding this two cycle access are that Clause 45 is backwards compatible with Clause 22, allowing devices to interoperate with each other. Secondly, by creating a address frame, the register address space is increased from 5 bits to 16 bits, which allows an STA to access 65,536 different registers.

    In order to accomplish this, several changes were made in the composition of the data frame. A new ST code (00) is defined to identify Clause 45 data frames. The OP codes were expanded to specify an address frame, a write frame, a read frame, or a read and post read increment address frame. Since the register address is no longer needed, this field is replaced with DEVTYPE to specify the targeted device type. The expanded device type allows the STA to access other devices in addition to PHYs.

    Additional details about Clause 45 can be found on the IEEE 802.3 workgroup website.

    References

    • IEEE 802 LAN/MAN Standards Committee
    • Use The MDIO Bus To Interrogate Complex Devices– Electronic Design Magazine

    相关推荐

    展开全文
  • Originally, this method had several sanitization steps for each clause baked directly into the method. This update has broken each clause into their own method. This makes it easier to build secure ...
  • ORDER BY clause is not in GROUP BY clause

    千次阅读 2020-06-30 09:24:45
    [Err] 1055 - Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'information_schema.PROFILING.SEQ' which is not functionally dependent on columns in GROUP BY ...

     

     

    执行SQL报错

     

    报错如下:


    [Err] 1055 - Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'information_schema.PROFILING.SEQ' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

     

     

    问题出现的原因: 
    MySQL 5.7.5及以上功能依赖检测功能。如果启用了ONLY_FULL_GROUP_BY SQL模式(默认情况下),MySQL将拒绝选择列表,HAVING条件或ORDER BY列表的查询引用在GROUP BY子句中既未命名的非集合列,也不在功能上依赖于它们。(5.7.5之前,MySQL没有检测到功能依赖关系,默认情况下不启用ONLY_FULL_GROUP_BY。有关5.7.5之前的行为的说明,请参见“MySQL 5.6参考手册”。)

    navicat执行下面:
    select @@global.sql_mode

     

     

    解决方案:

     

    linux设置配置文件

    vi /etc/my.cnf

     

     

    最后添加

    sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

     

     

    博主强烈推荐:https://blog.csdn.net/persistencegoing/article/details/84376427

    希望大家关注我一波,防止以后迷路,有需要的可以加群讨论互相学习java ,学习路线探讨,经验分享与java求职  

    群号:721 515 304
     

     

    展开全文
  • deducing from clause

    2021-01-08 09:05:06
    Having a full query definition including the select part and excluding the from-clause a minimal from-clause is deductive. <p>QueryDSL tuple projection example: List tuples = queryFactory.select...
  • <p>According to <a href="http://en.wikipedia.org/wiki/BSD_licenses">BSD licenses - Wikipedia, the free encyclopedia, 4-clause BSD is not compatible with GPLv2, but 2-clause or 3-clause BSD is. ...
  • Relative clause markers

    2020-12-09 14:35:11
    <div><p>The guidelines state that relative clause introducing words like English "that" should be tagged as <code>SCONJ</code>. I have two questions: 1. I noticed that in the English data ...
  • <div><p>Instead of creating a subquery for the SIZE function when appearing in the where clause, we can transform it into - A newly generated JOIN node - GROUP BY parent JOIN node - and replace the ...
  • Where clause help

    2020-12-08 20:48:55
    <p>Uncaught TypeError: Argument 1 passed to FaaPz\PDO\AdvancedStatement::where() must be an instance of FaaPz\PDO\Clause\Conditional, string given, called in filename.... <p>and second gives me the ...
  • mysql出现which is not functionally dependent on columns in GROUP BY clause报错欢迎使用Markdown编辑器总结 欢迎使用Markdown编辑器 假设查询语句是下面这样: SELECT d_1 FROM table WHERE id = 1 GROUP ...

    mysql出现which is not functionally dependent on columns in GROUP BY clause报错

    问题

    假设查询语句是下面这样:

    SELECT
    	 d_1, create_date
    FROM
    	table
    WHERE
    	id = 1 
    GROUP BY
    	create_date 
    

    报错就是这样,从网上找的方法无非三种:

    1. 为查找出的发生碰撞的字段加上any_value函数,于是就成了下面这种
    SELECT
        any_value(d_1) create_date
    FROM
       table
    WHERE
       id = 1 
    GROUP BY
       create_date 
    

    什么叫发生碰撞?比如我这里以create_date 做聚合,查出来的d_1有三个值,分别是1、2、3,这就是碰撞,因为聚合之后某一列有了多个值。
    2. 关闭ONLY_FULL_GROUP_BY模式。关于这个模式,是mysql提供的安全检查。 直接设置为一个新值就完事了:

    SET GLOBAL sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION';
    

    注意:我在这里设置的值,是通过select @@sql_mode得到的结果,去掉ONLY_FULL_GROUP_BY得到的。以自己的配置为主,只要去掉ONLY_FULL_GROUP_BY就好(如果通过这种方法设置,重启mysql似乎就会失效,我没尝试过,不敢打包票)
    3. 通过更改my.cnf实现。本质上和2是一样的,都是关闭ONLY_FULL_GROUP_BY模式。我是通过yum安装的mysql,所以直接编辑/etc/my.cnf,在文件的最后加上

    sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
    

    然后通过

    ystemctl restart mysqld.service
    

    重启数据库。

    总结

    总的来说,我个人感觉1是最好的,因为不需要更改系统配置,但是也有缺陷,就是每个你进行分组的语句,都要为查找出来的字段加上any_value()函数。如果没有那么多讲究,完全可以用2或者3的方法解决这个错误。

    展开全文
  • Having clause support

    2021-01-07 11:43:59
    <div><p>Hi! Any chance to get having clause supported? As it is so important in OLAP.</p><p>该提问来源于开源项目:apache/incubator-pinot</p></div>
  • Clause de documentation

    2020-12-27 05:05:25
    une clause portant sur la documentation. Dans le manifesto des méthodes agiles, on peut y lire: <p>Je pense qu'il pourrait être intéressant d'ajouter cette clause explicitant la présence d...
  • Mysql换成8.0版本报错;1055 - Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'information_schema.
  • Incorrect Limit clause

    2020-11-22 22:41:00
    ve come across a problem that kundera adds limit clause to the cql while using JPA model. I just want to select all the entities, but it add "limit 0", which causes the problem. <p>Can you ...
  • SQL HAVING Clause

    2019-01-19 10:52:12
    SQL HAVING Clause
  • <p>The Commons Clause, when applied to an OSI-approved license, creates a new license that violates the Open Source Definition (OSD). The OSI does not approve licenses that violate the OSD and does ...
  • 055 - Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'basedb.tcd.sale_day' which is not functionally dependent on columns in GROUP BY clause; this is inco...
  • [Err] 1055 – Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column ‘information_schema.PROFILING.SEQ’ which is not functionally dependent on columns in GROUP ...
  • <div><p>This pull request is an attempt to relicense critical files in the libnet project from the 4-clause to 3-clause BSD license. I've opened the PR to start a discussion with as many of the ...
  • <div><p>This pull request enables USING clause in DELETE and FROM clause in UPDATE in gram.y for queries like: <pre><code> DELETE FROM a_table USING another_table WHERE a_table.id = another_table....
  • [Err] 1055 - Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column ‘information_schema.PROFILING.SEQ’ which is not functionally dependent on columns in GROUP ...
  • Into Clause VS Let Clause

    2013-05-11 23:13:02
    1.Into Clause  用来将select, join,或者group的结果存储到一个临时变量中。  目的:在之后的查询中需要使用此结果。例如:   var developersGroupedByLanguage = from d in developers group d by d....
  • 7.2.2. The WHERE Clause

    2021-01-01 20:51:53
    7.2.2. The WHERE Clause 7.2.2.where子句 The syntax of the WHERE Clause is where子句的语法如下: WHERE search_condition where search_condition is any value expression (see Section 4.2) ...
  • Horn Clause霍尔语句

    2021-01-19 20:31:43
    应用 逻辑学家Alfred Horn提出了这样一个概念,便于进行逻辑推理。...如果一个clause最多只有1个结论,那么这种clause就称为horn clause。 例如: 1.parent(X, Z), parent(Z, Y) -> grandparent(X, Y) 2.go
  • Export with where clause

    2020-12-25 18:58:28
    <p>I want to export an entity with a where clause in the SQL. I have this : <pre><code> php $sqlQuery = $em->getRepository('AppBundle:Member') ->createQueryBuilder('m') -...

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