Reprinted from:http://blog.csdn.net/amohan/article/details/9980315
Fast and Efficient use: SET sql_safe_updates = 0; don't look at it!
When you use MySQL Workbench to perform a database management update today, a statement that executes an update encounters the following error message:
Error code:1175
You is using Safe update mode and you tr
Copy Code code as follows:
Create Trigger Tgname
On TB
For update
As
If Update (recommend)
Begin
Update TB Set commenddate= (GETDATE ()) from TB inner join inserted on Tb.vlistid=inserted.vlistid
End
Recommend represents the field being updated.
The key is the inserted table
Two special tables are used in trigger statements: Deleted tables and in
Win10 can not be started without fear! WinRE recovery Environment Easy to repair WIN10 systemWIN10 Technology Preview released to date, has been a full 10 days. After the experience of this period of time, the small partners have encountered some problems, resulting in system errors or even can not start it? It is likely that the first time you think about it is to go into safe mode, use windowsPE, or reload the system to repair the damaged system. however, in Vista since the system, we have a b
Product Automatic connection server-side update ideas, server-side update ideas
Product Automatic Update ideas
1. (user) User initiated raw
2, (System) connection server side, send the current version number
3, (server-side) detection data, for the latest version is returned 1, the reverse is the following processing:
The server-side version is stored in the fol
Original article address: nuget Action Plan-upgrade to 1.1, setup automatic updates, get nuget package Explorer
I have found three small actions for you. Dear readers, they will make your life better. What do you do with me while watching?
First, you must installNuget, A. Net Package Manager, what? You already have it? Which version is 1.1? Is the setting automatically updated?Action 1: automatically checks for extended updates
In tools> options, select environment | Extension Manager in the env
Achieve hot update of iOS images and other resource files (4): a minimal patch update logic, ios resource filesIntroduction
I have previously written a patch update Article. Here we will make a more streamlined implementation to facilitate integration. to make the logic universal, the dependency on AFNetworking and ReativeCocoa will be removed. original article,
Segment tree segment update hdu 1698 Just a Hook, segment update hdu
N metal rods, and q are given. At the beginning, each metal rod has a value of 1. Each operation can replace the metal rod from x to y. The copper is 1 and the silver is 2, the value of gold is 3, and the total value of all metal rods is calculated.
Lazy tags are used to update segments of a
1, there are some graphics card models it will limit the BIOS on the video driver updates. Only need to cancel the limit can be updated video driver. Restart your computer first, and then press DEL to enter the BIOS setup in the reboot. Locate the "Chipset Features Setup" option, set the inside "Assign IRQ to VGA" to "Enable" and save the exit. Of course, this type of graphics card model is generally Matrox graphics card, but if your video card is ATI graphics card, then set the video card to a
Apple is prompted to enter Apple ID account and password when updating software
1. In this case you may be installed using the assistant, we can use the computer to update, the iphone connected to the computer and then use like ITUNES,PP Assistant to update.
2. Then we open the PP assistant click on "can be upgraded application"-"genuine upgrade" can be.
The Apple ID account that was prompted at
Some Win7 users are accustomed to using the system's own updates to update the system, this method is more convenient, but it is easy to occur sometimes update failed, and sometimes not. This causes the system to duplicate the installation of the update, and there will be many failure records in the history list. How can we solve this problem?
Windows7 with
Tags: generate src technology adb date tle TAB update LSEMariaDB 10.3 Resolved the update cannot be queried in the same table as updates to the same table, and supports the updatean UPDATE statement with the same source and destination. See the case directly belowCREATE TABLE T1 (c1 int, c2 int), INSERT into T1 VALUES (10,10), (20,20);
Batch update
The mysql update statement is simple. to update a field of a piece of data, write as follows:
Copy codeThe Code is as follows:UPDATE mytable SET myfield = 'value' WHERE other_field = 'other _ value ';
If the same field is updated to the same value, mysql is also very simple. modify where:
Copy codeThe Code is as follows:UPDATE mytable SET myfield = '
Does MySql Delete and update operations affect performance? mysql Delete and update Performance
The cost of Delete and update operations is usually higher than that of insert operations. Therefore, a good design requires less database update and delete operations.
3.1 update
How to disable auto update in WIN10 and disable auto update in WIN10
Sometimes the computer automatically updates and switches on and off the machine will be very troublesome, and it will take a long time to wait. Even more, the system may crash and re-build the system after the update. Now we will teach you how to disable the
For a segment tree, the following is a list of some of the most commonly used operations in the segment tree application. (The specific topic is not posted, only for a certain basis of reference code style)In addition, note that multiple sets of input to write scanf ("%d%d", n,m)!=eof, line segment tree of the problem must be in C language input and output, To use a character array, no strings, enter characters when you want to add getchar() to devour empty lines .(1) Single point increase or
Document directory
The application publishes website updates. Generally, the whole website is updated. Click project-right-click to release.
I want to record one of the following: when you don't know whether your source code is up to date, and only update a file, the problem arises. Unlike website projects, applications are released on a single page, how can I update a single file?
The application publi
MySQL Optimization-Delete Insert update and mysql optimization insert update
Reprinted please indicate the source: http://blog.csdn.net/l1028386804/article/details/46581769
Insert
Insert multi-row query results into the table
Syntax
INSERT INTO table_name1(column_list1) SELECT (column_list2) FROM table_name2 WHERE (condition)
Table_name1 specifies the table to be inserted; column_list1 specifies the colum
Optimize update-virtual table and update-virtualBefore modification: A1update gls_voucher t set t. promptval = (select sum (m. originalval) from gls_vchitem m where m. vid = t. vid and m. dir = 1); B1update gls_voucher t set t. promptexplain = (select max (n. explain) from gls_vchitem n where n. vid = t. vid and n. viid = (select min (m. viid) from gls_vchitem m where m. vid = n. vid and m. explain is not n
$ Set and array update Methods in vue. js, and vue. jsset array update
Due to JavaScript restrictions, Vue cannot detect the following changed Arrays:
When an array item is directly set using indexes, such as vm. items [indexOfItem] = newValue
When you modify the length of an array, such as vm. items. length = newLength, the array is not updated.
Of course, the solution provided in vue is to use Vue. se
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